Objetivo:

A tarefa é criar um chatbot com quem você pode gastar seu tempo discutindo seus pensamentos mais profundos. Crie um chatbot com uma IA que aprenda com a sua entrada. Seu bot deve inspirá-lo a liberar suas verdades mais sombrias.

Inspiração:

http://en.wikipedia.org/wiki/Chatterbot

http://io9.com/5901579/10-tricks-that-chatbots-use-to-make-you-believe-theyre-human

Regras:

1. Você pode usar qualquer linguagem de programação.
2. Seus programas não devem receber nenhuma entrada do nome do arquivo, rede ou qualquer outra coisa que não seja a entrada do usuário.
3. Não pode haver vocabulário predefinido, o bot deve aprender tudo o que sabe da entrada do usuário, e a discussão pode ser sobre qualquer coisa.

Critérios obrigatórios:

1. Isso não é código-golfe, mas por favor, mantenha-o simples, o tamanho do código-fonte deve corresponder à linguagem de programação, o que significa: GolfScript = curto, BF = longo, outro = Use o bom senso. Use o código de exemplo como referência, seu código pode ter o dobro desse tamanho, mas é melhor que seja bom.
2. Seu programa não pode começar a ficar atrasado (atraso de 5 a 10 segundos) nas primeiras 1000 frases.
3. Uma discussão razoável deve ocorrer dentro de 20 a 30 frases.
4. Seu algoritmo deve diferir, na lógica, do código de exemplo, tanto quanto possível.

Critérios opcionais de julgamento de bônus:

1. O melhor algoritmo de aprendizado de bots, o melhor programa.
2. Nenhuma partida de tênis, ou seja, a conversa não segue o estrito: “usuário> computador> usuário” - o loop é girado.
3. Menos imitado, o comportamento do bot é diferente do comportamento do usuário, separando a percepção da atitude do bot da atitude do usuário.
4. Sentir diferentes mudanças de humor, por exemplo: falador, taciturno, otimista, pessimista.
5. Uma maneira de salvar e carregar o "cérebro", para que você possa continuar sua discussão com seu bot outro dia.

Exemplo de código em c ++ apenas para inspiração:

#include <iostream>
#include <vector>
#include <string>
#include <sstream>
#include <algorithm>
#include <iterator>

using namespace std;
vector<string> words;
vector<int> weight1;
vector<int> weight2;
int oldbw;

int collect(string const& i, int w1, int w2) 
{
    istringstream iss(i), iss2(i);
    copy(istream_iterator<string>(iss),
             istream_iterator<string>(),
             back_inserter(words));
    words.insert(words.end(), "\n");
    int a = distance(istream_iterator<string>(iss2), istream_iterator<string>());
    for(int c=0;c<=a;c++) weight1.insert(weight1.end(), w1);
    for(int c=0;c<=a;c++) weight2.insert(weight2.end(), w2);
    return a;
}

void answer(int c) 
{
    string op;
    int bs=0,bw=0,cs,si,searchsize,cc, c2;
    cout << "BRAIN: ";

    for(int iwrd = words.size()-c; iwrd >= 0; iwrd--)
    {
        searchsize = words.size()/4;
        cs = 0; si=searchsize;
        for(int iw = words.size()-2; (iw >= 0 && si!=0); iw--) 
        {   
            cc = iwrd-searchsize+si;
            if (cc>=0) if (words[cc]!="\n" && words[cc]==words[iw]) cs += si*(weight2[cc]-weight1[cc]);
            si--;
        }
        if(cs>=bs && iwrd<(int)words.size()*0.9 && abs(iwrd-oldbw)>((int)words.size()/5)) 
        {bs=cs; bw = iwrd;}
    }

    oldbw=bw;

    if(bw<0)bw=0;
    for(c2=bw; c2< (int)words.size()-1;c2++) if(words[c2]=="\n") {bw=c2+1;break;}

    for(c2=0;(bw+c2) < (int)words.size();c2++)
        if(words[bw+c2]!="\n") op += words[bw+c2] + " "; else break;

    c2=0;
    while(c>=0) 
    {
        if(bw-(++c2)>=0)
        {
            if(weight1[bw-c2]>0) { weight1[bw-c2]--; c--; }
        } else c=-1;

        if(bw+c2>=0)
        {
            if(weight2[bw+c2]>0) { weight2[bw+c2]--; c--; }
        } else c=-1;
    }

    collect(op,3,5);    
    cout << op << "\n  YOU: ";
}

int main() {
    string i;
    oldbw=0;
    do { getline(cin, i); answer(collect(i,5,3)+1);} while(i.compare("exit")!=0);
    return 0;
}

Exemplo de caixa de diálogo:

Hello there, crazy bot!
BRAIN: Hello there, crazy bot!
  YOU: I am not a crazy bot, I am pure human (and some cheese).
BRAIN: I am not a crazy bot, I am pure human (and some cheese).
  YOU: What cheese are you?
BRAIN: I am not a crazy bot, I am pure human (and some cheese).
  YOU: You did tell me that already.
BRAIN: You did tell me that already.
  YOU: I did not, stop bugging me, you crazy bot!
BRAIN: I am not a crazy bot, I am pure human (and some cheese).
  YOU: Are you a human? How come?
BRAIN: You did tell me that already.
  YOU: I will hunt you down the longests roads
BRAIN: What cheese are you?
  YOU: I am a pink cheese, with some butter. That makes sense to me.
BRAIN: You did tell me that already.
  YOU: Stop telling me that, who are you?
BRAIN: What cheese are you?
  YOU: I tell you what cheese I am if you tell me your name!
BRAIN: What cheese are you?
  YOU: Oh my god! This is leading towards nowhere.
BRAIN: What cheese are you?
  YOU: Oh no, my head hurts. Are you a crazy bot or not?
BRAIN: Are you a human? How come?
  YOU: That is enough! Can we talk about something more funny?
BRAIN: Oh no, my head hurts. Are you a crazy bot or not?
  YOU: I am HUMAN!
BRAIN: What cheese are you?
  YOU:

Este é um concurso de popularidade, a resposta com mais votos positivos até as vitórias de 2014-04-01!

Boa sorte se divirta!

Java

Nova edição : ainda mais ajustes no tempo livre. Eu iniciei uma nova ramificação, onde eu tenho jogado com o algoritmo DFS. Oficialmente, o ramo deve atuar como o núcleo de um novo algoritmo de BFS que estou planejando, mas, enquanto isso, eu queria entender melhor o que o DFS está fazendo e como está tomando suas decisões. Para esse fim, adicionei uma função de supressão que começa a deteriorar o valor de uma nova palavra, independentemente de tópico ou não, à medida que as frases crescem mais. Além disso, todas as palavras contribuem com valor para a frase agora, mas as palavras que não estão no tópico ou na lista de tópicos da frase contribuem com apenas 25% do valor da frequência. Um exemplo de conversa pode ser encontrado aqui e é muito bom, onde falamos sobre física, a natureza humana do Chatbrains e outros tópicos fascinantes.código da filial aqui .

Edit : Eu estive ajustando o código um pouco. Em vez de postar as revisões aqui, confira no meu repositório do github, onde você encontrará as últimas revisões. Também adicionei uma nova conversa à versão mais recente, na qual discutimos chatbots, pesquisa em profundidade e como a programação deve ser usada para criar coisas vivas !.

Decidi abraçar esse desafio de forma holística. Meu chatbot sabe muito poucas coisas começando - sem palavras, sem sintaxe, sem nada. Ele sabe como analisar o inglês padrão em palavras e como identificar caracteres que não sejam palavras como pontuação. É isso aí. Tudo o que sabe aprende com a interação com o usuário. À medida que você interage, ele presta atenção às conexões entre palavras e constrói frases usando essas informações. Obviamente, consulte a fonte para obter mais informações. Excedeu em muito as expectativas de duração do programa recomendadas para esse desafio, mas com um bom objetivo. Aqui estão alguns destaques do programa:

• O Chatbot começa sem conhecimento (segue "Regras": 3 )
• A frequência da ocorrência de palavras é rastreada
• As frequências de palavras são "deterioradas" para que a conversa possa passar de tópico para tópico (segue "Bônus": 3 e 4 )
• O arranjo das palavras nas sentenças observadas é gravado, de modo que as "frases" são implicitamente controladas (por exemplo, se você usar muitas frases preposicionais ao conversar com o bot, o bot também usará muitas delas!)
• As frases são construídas preferindo seguir as conexões mais frequentemente observadas entre as palavras, com fatores aleatórios para injetar variação
• O algoritmo de construção de sentença é uma pesquisa de profundidade profunda, que tenta maximizar a ocorrência de palavras de tópico na sentença de saída, com uma pequena preferência por sentenças finais (segue "Bonus": 1 - Eu uso um algoritmo de aprendizado bastante legal, que muda ao longo do tempo e mantém o conhecimento das conexões de palavras coletadas)
  • editar: as palavras dos tópicos agora são extraídas do conhecimento global de palavras recorrentes e da frase mais recente
  • editar: os pesos das palavras agora são calculados usando a base de log 4 do comprimento das palavras; portanto, as palavras mais longas são mais pesadas e as mais curtas, mais fracas - isso é para compensar a falta de um corpus verdadeiro para usar tanto na ponderação quanto na eliminando palavras de alta frequência e baixo valor, como se pode fazer facilmente com um corpus.
  • editar: À medida que o comprimento da frase aumenta durante a construção, uma função de supressão começa a diminuir o valor de palavras adicionais.
  • editar: A frase "final" é menos valiosa agora, pois estava causando uma preponderância de frases curtas e tolas.
  • editar: agora todas as palavras contribuem com valor, embora as palavras fora do tópico contribuam apenas com 25% do valor da frequência global.
  • Existe uma profundidade máxima interna para evitar muitos ciclos e muito tempo gasto devido ao meu uso da palavra precedente para criar uma frase
  • Os loops são detectados diretamente durante a criação de uma sentença e, embora tecnicamente permitidos, há uma grande chance de que os loops sejam evitados.
  • O tempo limite de sintonia é usado para incentivar a remoção da ramificação e a finalização da instrução e também para evitar o atraso de 5 a 10 segundos nas regras

Para resumir minha conexão com as regras:

• Para "Regras": 1 , eu escolhi Java, que é detalhado, portanto seja gentil.
• Para "Rules": 2 , apenas a entrada do usuário é aproveitada, embora eu tenha algum código de stub para adicionar economia / carregamento do cérebro para o futuro
• Para "Regras": 3 , não existe absolutamente nenhum vocabulário predefinido. O ChatBot sabe como analisar o inglês, mas é isso. Começando, ele não sabe absolutamente nada.
• Para "Critérios obrigatórios": 1 , meu programa é mais longo, mas é bastante interessante. Espero que você esqueça.
• Para "Critérios obrigatórios": 2 , tenho um tempo limite no algoritmo de construção de sentenças para impedir explicitamente mais de 5-6 segundos no tempo de pesquisa. A melhor frase até agora é retornada com tempo limite.
• Para "Critérios obrigatórios": 3 , os tópicos geralmente se solidificam em cerca de 10 frases, de modo que o Bot estará no tópico até então e em 20 frases responderá a declarações com algumas construções aleatórias fascinantes que realmente fazem um pouco de sentido.
• Para "Critérios obrigatórios": 4 , não emprestei nada do código de referência. Esta é uma construção totalmente única.
• Para "Bonus": 1 , eu gosto de pensar que esse bot é bastante excepcional. Não será tão convincente quanto os bots com script, mas não tem absolutamente nenhuma limitação nos tópicos e se moverá normalmente (com persistência) de um tópico para outro.
• Para "Bonus": 2 , isso é estritamente round-robin, então nenhum bônus aqui. Ainda. Não há nenhum requisito no meu algoritmo para resposta, por isso estou planejando uma versão em Thread que abordará esse bônus.
• Para "Bonus": 3 , inicialmente esse bot imitará, mas conforme a conversa progride além das primeiras frases, a imitação terminará claramente.
• Para "Bônus": 4 , "humor" não é processado de maneira significativa, mas como o tópico de preferências do bot a seguir, ele mudará o humor.
• Para "Bônus": 5 , o salvamento e o carregamento do cérebro não estão disponíveis no momento.

Então, eu conheci todas as regras básicas, todas as regras obrigatórias e as regras de bônus provisórias 1, 3 e 4.

Como outro bônus, comentei em todo o código, fique à vontade para pedir emprestado ou fazer recomendações de melhorias. Claramente, como não tenho diálogo interno nem conhecimento "estrutural", as conversas serão estranhas por mais tempo do que outros bots, mas acho que cumpro as regras muito bem.

Agora, passe para o código (alguns comentários foram redigidos para se ajustarem ao limite do corpo) ou siga-o no GitHub, à medida que continuo aprimorando-o :

import java.util.*;
import java.util.regex.*;

public class LearningChatbot {
    /**
     * Static definition of final word in a statement. It never has 
     * any descendents, and concludes all statements. This is the only
     * "starting knowledge" granted the bot.
     */
    public static final ChatWord ENDWORD = new ChatWord("\n");

    /**
     * The Brain of this operation.
     */
    private ChatbotBrain brain;

    /**
     * Starts LearningChatbot with a new brain
     */
    public LearningChatbot() {
        brain = new ChatbotBrain();
    }

    /**
     * Starts LearningChatbot with restored brain.
     */
    public LearningChatbot(String filename) {
        throw new UnsupportedOperationException("Not yet implemented");
    }

    /**
     * Invocation method.
     */
    public void beginConversation() {
        ChatbotBrain cb = new ChatbotBrain();

        Scanner dialog = new Scanner(System.in);

        boolean more = true;

        while (more) {
            System.out.print("    You? ");
            String input = dialog.nextLine();

            if (input.equals("++done")) {
                System.exit(0);
            } else if (input.equals("++save")) {
                System.out.println("Saving not yet implemented, sorry!");
                System.exit(0);
            } else if (input.equals("++help")) {
                getHelp();
            }else {
                cb.decay();
                cb.digestSentence(input);
            }

            System.out.print("Chatbot? ");
            System.out.println(cb.buildSentence());
        }
    }

    /**
     * Help display
     */
    public static void getHelp() {
        System.out.println("At any time during the conversation, type");
        System.out.println("   ++done");
        System.out.println("to exit without saving.");
        System.out.println("Or type");
        System.out.println("   ++save");
        System.out.println("to exit and save the brain.");
        System.out.println();
    }

    /**
     * Get things started.
     */
    public static void main(String[] args) {
        System.out.println("Welcome to the Learning Chatbot");
        System.out.println();
        getHelp();

        LearningChatbot lc = null;
        if (args.length > 0) {
            System.out.printf("Using %s as brain file, if possible.", args[0]);
            lc = new LearningChatbot(args[0]);
        } else {
            lc = new LearningChatbot();
        }
        lc.beginConversation();
    }

    /**
     * The ChatbotBrain holds references to all ChatWords and has various
     * methods to decompose and reconstruct sentences.
     */
    static class ChatbotBrain {
        /**
         * A tracking of all observed words. Keyed by the String version of
         * the ChatWord, to allow uniqueness across all ChatWords
         */
        private Map<String,ChatWord> observedWords;

        /**
         * This brain is going to be able to keep track of "topics" by way of
         * a word frequency map. That way, it can generate sentences based
         * on topic-appropriateness.
         */
        private Map<ChatWord, Double> wordFrequencyLookup;

        /**
         * This holds the actual word frequencies, for quick isolation of
         * highest frequency words.
         */
        private NavigableMap<Double, Collection<ChatWord>> wordFrequency;

        /**
         * This holds the count of words observed total.
         */
        private int wordCount;

        /**
         * This holds the current "values" of all words.
         */
        private double wordValues;

        /**
         * A "word" that is arbitrarily the start of every sentence
         */
        private ChatWord startWord;

        /**
         * Rate of decay of "topics".
         */
        private double decayRate;

        // These values configure various features of the recursive 
        // sentence construction algorithm.
        /** Nominal (target) length of sentences */
        public static final int NOMINAL_LENGTH = 10;
        /** Max length of sentences */
        public static final int MAX_LENGTH = 25;
        /** Sentence creation timeout */
        public static final long TIMEOUT = 5000;
        /** Topic words to match against */
        public static final int TOPICS = 3;
        /** Minimum branches to consider for each word */
        public static final int MIN_BRANCHES = 3;
        /** Maximum branches to consider for each word */
        public static final int MAX_BRANCHES = 5;
        /** % chance as integer out of 100 to skip a word */
        public static final int SKIP_CHANCE = 20;
        /** % chance as integer to skip a word that would cause a loop */
        public static final int LOOP_CHANCE = 5;
        /** % chance that punctuation will happen at all */
        public static final int PUNCTUATION_CHANCE = 25;
        /** % chance that a particular punctuation will be skipped */
        public static final int PUNCTUATION_SKIP_CHANCE = 40;

        /**
         * Convenience parameter to use a common random source 
         * throughout the brain.
         */
        private Random random;

        /**
         * Gets the Chatbot started, sets up data structures necessary
         */
        public ChatbotBrain() {
            observedWords = new HashMap<String,ChatWord>();
            observedWords.put("\n",ENDWORD);
            startWord = new ChatWord("");
            observedWords.put("",startWord);

            wordFrequencyLookup = new HashMap<ChatWord, Double>();
            wordFrequency = new TreeMap<Double, Collection<ChatWord>>();
            decayRate = 0.05;
            wordCount = 0;
            wordValues = 0.0;
            random = new Random();
        }

        /**
         * More complex digest method (second edition) that takes a sentence,
         * cuts it pu, and links up the words based on ordering.
         */
        public void digestSentence(String sentence) {
            Scanner scan = new Scanner(sentence);

            ChatWord prior = null;
            ChatWord current = null;
            String currentStr = null;
            String currentPnc = null;
            while (scan.hasNext()) {
                currentStr = scan.next();
                Pattern wordAndPunctuation = 
                        Pattern.compile("([a-zA-Z\\-_'0-9]+)([^a-zA-Z\\-_'0-9]?)[^a-zA-Z\\-_'0-9]*?");
                Matcher findWords = wordAndPunctuation.matcher(currentStr);
                //  Basically this lets us find words-in-word typos like this:
                //  So,bob left his clothes with me again.
                //  where "So,bob" becomes "So," "bob"
                while (findWords.find()) {
                    currentStr = findWords.group(1);
                    currentPnc = findWords.group(2);
                    if (currentStr != null) {
                        if (observedWords.containsKey(currentStr)) {
                            current = observedWords.get(currentStr);
                        } else {
                            current = new ChatWord(currentStr);
                            observedWords.put(currentStr, current);
                        }

                        incrementWord(current);

                        if (currentPnc != null && !currentPnc.equals("")) {
                            current.addPunctuation(currentPnc.charAt(0));
                        }

                        if (prior != null) {
                            prior.addDescendent(current);
                        }
                        if (prior == null) {
                            startWord.addDescendent(current);
                        }

                        prior = current;
                    }
                }
            }
            if (prior != null) { // finalize.
                prior.addDescendent(ENDWORD);
            }
        }

        /**
         * Increments the value of a word (catalogues a new sighting).
         */
        public void incrementWord(ChatWord word) {
            Double curValue;
            Double nextValue;
            Collection<ChatWord> freqMap;
            if (wordFrequencyLookup.containsKey(word)) {
                curValue = wordFrequencyLookup.get(word);
                freqMap = wordFrequency.get(curValue);
                freqMap.remove(word);
            } else {
                curValue = 0.0;
            }
            nextValue=curValue+1.0;
            wordFrequencyLookup.put(word, nextValue);

            freqMap = wordFrequency.get(nextValue);
            if (freqMap == null) {
                freqMap = new HashSet<ChatWord>();
                wordFrequency.put(nextValue, freqMap);
            }

            freqMap.add(word);
            wordCount++;
            wordValues++;
        }

        /**
         * Decays a particular word by decay rate.
         */
        public void decayWord(ChatWord word) {
            Double curValue;
            Double nextValue;
            Collection<ChatWord> freqMap;
            if (wordFrequencyLookup.containsKey(word)) {
                curValue = wordFrequencyLookup.get(word);
                freqMap = wordFrequency.get(curValue);
                freqMap.remove(word);
            } else {
                return;
            }
            wordValues-=curValue; // remove old decay value
            nextValue=curValue-(curValue*decayRate);
            wordValues+=nextValue; // add new decay value
            wordFrequencyLookup.put(word, nextValue);

            freqMap = wordFrequency.get(nextValue);
            if (freqMap == null) {
                freqMap = new HashSet<ChatWord>();
                wordFrequency.put(nextValue, freqMap);
            }

            freqMap.add(word);
        }

        /**
         * Decay all word's frequency values. 
         */
        public void decay() {
            for (ChatWord cw : wordFrequencyLookup.keySet()) {
                decayWord(cw);
            }
        }

        /**
         * Gets a set of words that appear to be "top" of the frequency
         * list.
         */
        public Set<ChatWord> topicWords(int maxTopics) {
            Set<ChatWord> topics = new HashSet<ChatWord>();

            int nTopics = 0;
            for (Double weight: wordFrequency.descendingKeySet()) {
                for (ChatWord word: wordFrequency.get(weight)) {
                    topics.add(word);
                    nTopics++;
                    if (nTopics == maxTopics) {
                        return topics;
                    }
                }
            }
            return topics;
        }

        /**
         * Uses word frequency records to prefer to build on-topic
         * sentences.
         */
        public String buildSentence() {
            int maxDepth = NOMINAL_LENGTH+
                    random.nextInt(MAX_LENGTH - NOMINAL_LENGTH);
            ChatSentence cs = new ChatSentence(startWord);
            // We don't want to take too long to "think of an answer"
            long timeout = System.currentTimeMillis() + TIMEOUT;
            double bestValue = buildSentence(cs, topicWords(TOPICS), 0.0, 0, maxDepth, timeout);
            return cs.toString();
        }

        public double buildSentence(ChatSentence sentence, 
                Set<ChatWord> topics, double curValue,
                int curDepth, int maxDepth, long timeout){
            if (curDepth==maxDepth || System.currentTimeMillis() > timeout) {
                return curValue;
            }
            // Determine how many branches to enter from this node
            int maxBranches = MIN_BRANCHES + random.nextInt(MAX_BRANCHES - MIN_BRANCHES);
            // try a few "best" words from ChatWord's descendent list.
            ChatWord word = sentence.getLastWord();
            NavigableMap<Integer, Collection<ChatWord>> roots =
                    word.getDescendents();
            // Going to keep track of current best encountered sentence
            double bestSentenceValue = curValue;
            ChatSentence bestSentence = null;
            int curBranches = 0;
            for (Integer freq : roots.descendingKeySet()) {
                for (ChatWord curWord : roots.get(freq)) {
                    if (curWord.equals(ENDWORD)) {
                        // let's weigh the endword cleverly
                        double endValue = random.nextDouble() * wordFrequency.lastKey();

                        if (curValue+endValue > bestSentenceValue) {
                            bestSentenceValue = curValue+endValue;
                            bestSentence = new ChatSentence(sentence);
                            bestSentence.addWord(curWord);
                        }
                        curBranches++;
                    } else {
                        int chance = random.nextInt(100);
                        boolean loop = sentence.hasWord(curWord);
                        /* Include a little bit of chance in the inclusion of
                         * any given word, whether a loop or not.*/
                        if ( (!loop&&chance>=SKIP_CHANCE) ||
                                (loop&&chance<LOOP_CHANCE)) {
                            double wordValue = topics.contains(curWord)?
                                    wordFrequencyLookup.get(curWord):0.0;
                            ChatSentence branchSentence = new ChatSentence(sentence);
                            branchSentence.addWord(curWord);
                            addPunctuation(branchSentence);
                            double branchValue = buildSentence(branchSentence,
                                    topics, curValue+wordValue, curDepth+1,
                                    maxDepth, timeout);
                            if (branchValue > bestSentenceValue) {
                                bestSentenceValue = branchValue;
                                bestSentence = branchSentence;
                            }
                            curBranches++;
                        }
                    }
                    if (curBranches == maxBranches) break;
                }
                if (curBranches == maxBranches) break;
            }
            if (bestSentence != null) {
                sentence.replaceSentence(bestSentence);
            }
            return bestSentenceValue;
        }

        /**
         * Adds punctuation to a sentence, potentially.
         */
        public void addPunctuation(ChatSentence sentence) {
            ChatWord word = sentence.getLastWord();
            NavigableMap<Integer, Collection<Character>> punc = word.getPunctuation();
            if (punc.size()>0 && random.nextInt(100)<PUNCTUATION_CHANCE){
                Integer puncMax = punc.lastKey();
                Collection<Character> bestPunc = punc.get(puncMax);
                Character puncPick = null;
                for (Integer freq : punc.descendingKeySet()) {
                    for (Character curPunc : punc.get(freq)) {
                            if (random.nextInt(100)>=PUNCTUATION_SKIP_CHANCE) {
                                puncPick = curPunc;
                                break;
                            }
                    }
                    if (puncPick != null) break;
                }
                if (puncPick != null) {
                    sentence.addCharacter(puncPick);
                }
            }
        }

        @Override
        public String toString() {
            StringBuilder sb = new StringBuilder();
            sb.append("ChatBrain[");
            sb.append(observedWords.size());
            sb.append("]:");
            for (Map.Entry<String,ChatWord> cw : observedWords.entrySet()) {
                sb.append("\n\t");
                sb.append(wordFrequencyLookup.get(cw.getValue()));
                sb.append("\t");
                sb.append(cw.getValue());
            }
            return sb.toString();
        }

    }

    /**
     * Useful helper class to construct sentences.
     */
    static class ChatSentence implements Cloneable {
        /**
         * List of words.
         */
        private List<Object> words;
        /**
         * Quick search construct to have O(ln) lookup times.
         */
        private Set<Object> contains;

        /**
         * Starts to build a sentence with a single word as anchor
         */
        public ChatSentence(ChatWord anchor) {
            if (anchor == null) {
                throw new IllegalArgumentException("Anchor must not be null");
            }
            words = new ArrayList<Object>();
            contains = new HashSet<Object>();
            words.add(anchor);
            contains.add(anchor);
        }

        /** 
         * Starts a sentence using an existing ChatSentence. Also used for
         * cloning.
         */
        public ChatSentence(ChatSentence src) {
            words = new ArrayList<Object>();
            contains = new HashSet<Object>();
            appendSentence(src);
        }

        /**
         * Adds a word to a sentence
         */
        public ChatSentence addWord(ChatWord word) {
            if (word == null) {
                throw new IllegalArgumentException("Can't add null word");
            }
            words.add(word);
            contains.add(word);
            return this;
        }

        /**
         * Adds a character to a sentence.
         */
        public ChatSentence addCharacter(Character punc) {
            if (punc == null) {
                throw new IllegalArgumentException("Can't add null punctuation");
            }
            words.add(punc);
            contains.add(punc);
            return this;
        }

        /**
         * Replace a sentence with some other sentence.
         * Useful to preserve references.
         */
        public ChatSentence replaceSentence(ChatSentence src) {
            words.clear();
            contains.clear();
            appendSentence(src);
            return this;
        }

        public ChatSentence appendSentence(ChatSentence src) {
            words.addAll(src.getWords());
            contains.addAll(src.getWords());
            return this;
        }

        /**
         * Get last word of the sentence.
         */
        public ChatWord getLastWord() {
            for (int i=words.size()-1; i>=0; i--) {
                if (words.get(i) instanceof ChatWord) {
                    return (ChatWord) words.get(i);
                }
            }
            throw new IllegalStateException("No ChatWords found!");
        }

        /**
         * Checks if the sentence has a word
         */
        public boolean hasWord(ChatWord word) {
            return contains.contains(word);
        }

        /**
         * Counts the number of words in a sentence.
         */
        public int countWords() {
            int cnt = 0;
            for (Object o : words) {
                if (o instanceof ChatWord) {
                    cnt++;
                }
            }
            return cnt;
        }

        /**
         * Gets all the words of the sentence
         */
        private List<Object> getWords() {
            return words;
        }

        /**
         * Returns the sentence as a string.
         */
        @Override
        public String toString() {
            StringBuffer sb = new StringBuffer();
            for (Object o : words) {
                if (o instanceof ChatWord) {
                    ChatWord cw = (ChatWord) o;
                    sb.append(" ");
                    sb.append( cw.getWord() );
                } else {
                    sb.append(o);
                }
            }
            return sb.toString().trim();
        }

        /**
         * Clones this sentence.
         */
        @Override
        public Object clone() {
            return new ChatSentence(this);
        }
    }

    /**
     * ChatWord allows the creation of words that track how they are
     * connected to other words in a forward fashion. 
     */
    static class ChatWord {
        /** The word. */
        private String word;
        /** Collection of punctuation observed after this word */
        private NavigableMap<Integer, Collection<Character>> punctuation;
        /** Lookup linking observed punctuation to where they are in ordering */
        private Map<Character, Integer> punctuationLookup;
        /** Punctionation observation count */
        private Integer punctuationCount;

        /** Collection of ChatWords observed after this word */
        private NavigableMap<Integer, Collection<ChatWord>> firstOrder;
        /** Lookup linking observed words to where they are in ordering */
        private Map<ChatWord, Integer> firstOrderLookup;
        /** First order antecedent word count */
        private Integer firstOrderCount;

        /**
         * Creates a new ChatWord that is aware of punctuation that
         * follows it, and also ChatWords that follow it.
         */
        public ChatWord(String word){
            this.word = word;

            this.firstOrder = new TreeMap<Integer, Collection<ChatWord>>();
            this.firstOrderLookup = new HashMap<ChatWord, Integer>();
            this.firstOrderCount = 0;

            this.punctuation = new TreeMap<Integer, Collection<Character>>();
            this.punctuationLookup = new HashMap<Character, Integer>();
            this.punctuationCount = 0;
        }

        protected NavigableMap<Integer, Collection<ChatWord>> getDescendents() {
            return firstOrder;
        }

        /**
         * Returns how many descendents this word has seen.
         */
        protected int getDescendentCount() {
            return firstOrderCount;
        }

        /**
         * Gets the lookup map for descendents
         */
        protected Map<ChatWord, Integer> getDescendentsLookup() {
            return firstOrderLookup;
        }

        /** As conversation progresses, word orderings will be encountered.
         * The descendent style of "learning" basically weights how often
         * words are encountered together, and is strongly biased towards
         * encountered ordering.
         */
        public void addDescendent(ChatWord next) {
            if(next != null){
                firstOrderCount++;
                int nextCount = 1;
                Collection<ChatWord> obs = null;
                // If we've already seen this word, clean up prior membership.
                if(firstOrderLookup.containsKey(next)){
                    nextCount = firstOrderLookup.remove(next);
                    obs = firstOrder.get(nextCount);
                    // Remove from prior obs count order
                    obs.remove(next);
                    nextCount++;
                }
                obs = firstOrder.get(nextCount);
                if (obs == null) { // we don't have this order yet
                    obs = new HashSet<ChatWord>();
                    firstOrder.put(nextCount, obs);
                }
                firstOrderLookup.put(next, nextCount);
                obs.add(next);
            }
        }

        /**
         * Some words have punctuation after them more often than not. 
         * This allows the ChatBrain to record occurrences of punctuation
         * after a word.
         */
        public void addPunctuation(Character punc) {
            if(punc != null){
                punctuationCount++;
                int puncCount = 1;
                Collection<Character> obs = null;
                // If we've already seen this punc, clean up prior membership.
                if(punctuationLookup.containsKey(punc)){
                    puncCount = punctuationLookup.remove(punc);
                    obs = punctuation.get(puncCount);
                    // Remove from prior obs count order
                    obs.remove(punc);
                    puncCount++;
                }
                obs = punctuation.get(puncCount);
                if (obs == null) { // we don't have this order yet
                    obs = new HashSet<Character>();
                    punctuation.put(puncCount, obs);
                }
                punctuationLookup.put(punc, puncCount);
                obs.add(punc);
            }
        }

        /**
         * Including this for now, but I don't like it -- it returns all
         * punctuation wholesale. I think what would be better is some
         * function that returns punctuation based on some characteristic.
         */
        protected NavigableMap<Integer, Collection<Character>> getPunctuation() {
            return punctuation;
        }

        /**
         * Gets count of punctuation encountered.
         */
        protected int getPunctuationCount() {
            return punctuationCount;
        }

        /**
         * Gets lookup of punctuations encountered.
         */
        protected Map<Character, Integer> getPunctuationLookup() {
            return punctuationLookup;
        }

        /**
         * Gets the String backing this ChatWord.
         */
        public String getWord() {
            return word;
        }

        /**
         * ChatWords are equivalent with the String they wrap.
         */
        @Override
        public int hashCode() {
            return word.hashCode();
        }

        /**
         * ChatWord equality is that ChatWords that wrap the same String
         * are equal, and a ChatWord is equal to the String that it contains.
         */
        @Override
        public boolean equals(Object o){
            if (o == this) {
                return true;
            }
            if (o instanceof ChatWord) {
                return ((ChatWord)o).getWord().equals(this.getWord());
            }
            if (o instanceof String) {
                return ((String)o).equals(this.getWord());
            }

            return false;
        }

        /**
         * Returns this ChatWord as a String.
         */
        @Override
        public String toString() {
            StringBuilder sb = new StringBuilder();
            sb.append("ChatWord[");
            sb.append(word);
            sb.append("]desc{");
            for (Integer key : firstOrder.keySet() ) {
                Collection<ChatWord> value = firstOrder.get(key);
                sb.append(key);
                sb.append(":[");
                for (ChatWord cw : value) {
                    sb.append(cw.getWord());
                    sb.append(",");
                }
                sb.append("],");
            }
            sb.append("}punc{");
            for (Integer key : punctuation.keySet() ) {
                Collection<Character> value = punctuation.get(key);
                sb.append(key);
                sb.append(":[");
                for (Character c : value) {
                    sb.append("\"");
                    sb.append(c);
                    sb.append("\",");
                }
                sb.append("],");
            }
            sb.append("}");
            return sb.toString();
        }
    }
}

Exemplo de conversa:

B / c vinculado de limites de caracteres de postagem

Conversa em que o Bot me diz que devo programar coisas vivas

Última conversa em que o Bot fala sobre a verdadeira natureza do Chatbrains, a física, o universo físico e como eu provavelmente também sou um Chatbrain

e assim por diante. Tenho algumas coisas que vou acrescentar - por exemplo, devido à semelhança de palavras simples, elas tendem a dominar listas de tópicos não curadas. Vou adicionar uma porcentagem de salto para as palavras do tópico, para que as palavras comuns sejam ignoradas.

C ++

Agora só preciso escrever o algoritmo para iniciar uma conversa. Meu primeiro exercício de aprendizado de máquina.

#include <iostream>
#include <string>
#include <vector>
#include <ctime>
#include <fstream>
using namespace std;

int randint(int n) {return rand()%n;}

bool old_response(string r, vector<string>v){
  for(int i = 0; i < v.size(); i++) if(r == v[i]) return true;
  return false;
}

void output(vector<string>v) {cout<< "CHATBOT:\t" << v[randint(v.size())] << endl;}

void delay(int sum_response, int sum_time) {
  if(sum_response != 0) {
    int t = time(0);
    while(true)if(time(0) == t+sum_time/sum_response)break;
  }
}

int main() {

  string name = "";
  cout<<"Please enter your name: ";
  getline(cin, name);

  vector<string> responses;

  ifstream ifs("responses.txt");
  if(ifs) {
    do {
      string s = "";
      getline(ifs, s);
      if(ifs.eof()) break;
      responses.push_back(s);
    } while(!ifs.eof());
  }

  string response = "";
  getline(cin, response);
  int time1 = time(0);
  int sum_time = 0;
  int sum_response = 0;

  do {

    if(!old_response(response, responses)) responses.push_back(response);

    delay(sum_response, sum_time);
    output(responses);

    cout << name << ":\t";
    getline(cin, response);
    sum_time += time(0)-time1;
    sum_response++;
    time1 = time(0);

  } while(response != "goodbye");

  cout<<"goodbye, " << name;

  ofstream ofs("responses.txt", ios_base::app);
  for(int i = 0; i < responses.size(); i++) ofs << responses[i] << endl;

  return 0;
}

Editar:

Todas as minhas tentativas foram ridículas, então acho que vou deixar assim. Os outros eram tão ridículos quanto isso:

C ++

Eu apontei para o bônus opcional 3: " Menos imitação, o comportamento do bot é diferente do comportamento do usuário, separando a percepção da atitude do bot da atitude do usuário ". O resultado foi um robô realmente teimoso que não consegue mudar de assunto com facilidade e deixa você louco.

Leva algum tempo para iniciar uma discussão, depois de um tempo uma discussão pode ser assim:

 Mindless:   Why would I run? I am not scared of you.
      YOU:   Who are you and why do you keep asking stupid questions?

 Mindless:   I never said that you should run.
      YOU:   I never said I will run.

 Mindless:   I am the hidden, who are you?
      YOU:   I am god.

 Mindless:   I will
      YOU:   You will obey me.

 Mindless:   Why would I run? I am not scared of you.
      YOU:   You should be scared of me.

 Mindless:   I never said I will run.
      YOU:   Who said you will run?

 Mindless:   Who are you and why do you keep asking stupid questions?
      YOU:   I will not anymore.

 Mindless:   I never said that you should run.
      YOU:   I never said I will run.

 Mindless:   I am the hidden, who are you?
      YOU:   I can see you!

 Mindless:   Why would I run? I am not scared of you.
      YOU:   I am hunting you down

 Mindless:   You should be scared of me.
      YOU:   That is a lie.

 Mindless:   What can't you do?
      YOU:   Why can't I do what?

 Mindless:   You don't.
      YOU:   Well, you are talking nonsense.

 Mindless:   How do I take it seriously.
      YOU:   Stop talking to me

 Mindless:   Well, I can hide, but you can't.
      YOU:   This is not a funny conversation.

 Mindless:   Yes, I will. Stay on line.
      YOU:   Do you want to eat somewhere?

 Mindless:   I laugh
      YOU:   Are you laughing at me?

 Mindless:   Yes, you do.
      YOU:   Can I join you laghs?

 Mindless:   I can hide, but you can't.
      YOU:   Why would you hide? I asked if you want to eat?

 Mindless:   Well, I can see you!
      YOU:   Yes, and I see you. eat something maybe?

 Mindless:   I will not anymore.
      YOU:   Have you stopped eating?

 Mindless:   I never said I will run.
      YOU:   Well, I was talking about eating. Is dinner a good thing to do?

 Mindless:   I take it seriously.
      YOU:   Okay, take it seriously and follow me to the restaurant and get some food to eat.

 Mindless:   Have you stopped eating?
      YOU:   NO absolutely not! A am starving because of YOU who refuse to eat

 Mindless:   I never said I will run.
      YOU:   Well, we can walk to the restaurant instead.

 Mindless:   Well, I was talking about eating. Is dinner a good thing to do?
      YOU:   Yes, that is perfect. What are the best fried chickens around here?

 Mindless:   I laugh
      YOU:   You laugh at the chicken?

 Mindless:   Are you laughing at me?
      YOU:   No, I am eating. Chicken.

 Mindless:   You are a thinker?
      YOU:   No, I am a eater.

 Mindless:   Yes, I will. Stay on line.
      YOU:   Stay. On course. To the restaurant!

 Mindless:   What can't you do?
      YOU:   I can't wait for you anymore. You are really slow.

 Mindless:   You can try run, but you can't hide
      YOU:   I will run.

 Mindless:   I am hunting you down
      YOU:   Ha ha. Make sure you look at the restaurant first. I might be there eating.

 Mindless:   I never said I will run.
      YOU:   Okay, but when you get there, I may still be there eating. I feel like I can eat a ton.

 Mindless:   That is a lie.
      YOU:   No, it is true.

 Mindless:   Why can't I do what?
      YOU:   You can eat a ton too, if you ever get there. And if you have the money.

 Mindless:   I never said I will run.
      YOU:   Okej, suit yourself.

 Mindless:   That is a lie.
      YOU:   God

 Mindless:   You laugh at the chicken?
      YOU:   Yes, I laugh at everything. You are the most lazy stubborn person I have ever met in life.

 Mindless:   Stop talking to me
      YOU:   Okay, now you are really rude.

 Mindless:   This is not a funny conversation.
      YOU:   Okay, think about it. Try tell me something new.

 Mindless:   Stay. On course. To the restaurant!
      YOU:   Sure! I am already there staying on course eating the food.

 Mindless:   You can eat a ton too, if you ever get there. And if you have the money.
      YOU:   I have already paid for my food, and I will not share it with you.

 Mindless:   I can see you!
      YOU:   Oh god, what the hell is this?

 Mindless:   I am hunting you down
      YOU:   I will hide under the table.

 Mindless:   Yes, and I see you. eat something maybe?
      YOU:   Sure, have a chicken

 Mindless:   Have you stopped eating?
      YOU:   No, for the love of god, sit down and share my chicken

 Mindless:   I have already paid for my food, and I will not share it with you.
      YOU:   What? I paid for it, not you!

 Mindless:   I never said I will run.
      YOU:   Well, you better not run here in the restaurant.

 Mindless:   I am hunting you down
      YOU:   I am not going anywhere, chill out,

 Mindless:   I will hide under the table.
      YOU:   Why would you do something like that? I will not hurt you.

 Mindless:   Oh god, what the hell is this?
      YOU:   That is chicken!

 Mindless:   Okay, take it seriously and follow me to the restaurant and get some food to eat.
      YOU:   Wait a minute now! we ARE at the restaurant! Can't you see all people sitting at the tables eating?

 Mindless:   Well, we can walk to the
      YOU:   ... talk to the who?

 Mindless:   I never said I will not hurt you.
      YOU:   What the ?

 Mindless:   That is chicken!
      YOU:   Great! Have fun.

 Mindless:   Yes, you do.
      YOU:   You too.

 Mindless:   Stop talking to me
      YOU:   Okay.

 Mindless:   Why would I run? I am god.
      YOU:   Good night!

A abordagem é armazenar tudo em grupos de 3 palavras conectadas. Cada grupo é ponderado e re-ponderado em uma matriz de 1000 dimensões de grupos de palavras. Código fonte:

#include <iostream>
#include <vector>
#include <string>
#include <sstream>
#include <algorithm>
#include <iterator>

using namespace std;
vector<string> words;

class c_wordgroup {
public:
    int                 sorting[1000];
    string              words[5];

    void resetsort(int ns)
    {
        for(int i = 0; i<1000;i++)
            sorting[i] = ns;
    }
};

class c_wglist {
public: int                 c;
     vector<c_wordgroup>    wg;
     vector<int>            historywg;



     int wgexists(c_wordgroup nwg)
     {
         vector<c_wordgroup>::iterator it;
         int cc = 0;
         for (it = wg.begin(); it != wg.end(); ++it) {

             // Check if words is the same
             if(it->words[0] == nwg.words[0])
                 if(it->words[1] == nwg.words[1])
                     if(it->words[2] == nwg.words[2])
                        return cc;

             cc++;
         }
         return -1;
     }

     int getbestnext(int lastwg)
     {
         vector<c_wordgroup>::iterator  it;
         int cc = 0;

         int bv = -1;
         int bwg = 0;

         for (it = wg.begin(); it != wg.end(); ++it) {

             bool cont = false;
             for (int iti = 0; iti<((int)historywg.size()/50+5);iti++)
                 if((int)wgl.historywg.size()-1-iti>=0)
                    if (cc==wgl.historywg[(int)wgl.historywg.size()-1-iti])
                        cont = true;

             if(cont==true) {cc++;continue;};

             int cv = 100000000;

             // Check if words is the same
             if(it->words[0] == wgl.wg[lastwg].words[1])
             {
                 for(int si=0;si<1000;si++)
                     if ((int)wgl.historywg.size()-1-si>=0)
                     {
                            int tmpwg = wgl.historywg[(int)wgl.historywg.size()-1-si];
                            cv -= abs(it->sorting[si]-wgl.wg[tmpwg].sorting[si])/(si+1);
                     }
             } else cv -= 1000 * wgl.c/2;

             if(it->words[1] == wgl.wg[lastwg].words[2])
             {
                 for(int si=0;si<1000;si++)
                    if ((int)wgl.historywg.size()-1-si>=0)
                     {
                            int tmpwg = wgl.historywg[(int)wgl.historywg.size()-1-si];
                            cv -= abs(it->sorting[si]-wgl.wg[tmpwg].sorting[si])/(si+1);
                     }
             } else cv -= 1000 * wgl.c/2;

            if(bv == -1 || cv > bv)
            {
                bwg=cc;
                bv = cv;
            }
            cc++;
         }
         return bwg;
     }
} wgl;

void answer2() 
{
    vector<string> lastwords;
    lastwords.insert(lastwords.end(), words[words.size()-3]);
    lastwords.insert(lastwords.end(), words[words.size()-2]);
    lastwords.insert(lastwords.end(), words[words.size()-1]);

    int bestnextwg;

    cout << "\n Mindless:   ";
    for(int ai=0;ai<20;ai++)
    {
        bestnextwg=wgl.getbestnext(wgl.historywg[(int)wgl.historywg.size()-1]);

        if(wgl.wg[bestnextwg].words[2]=="[NL]")
            ai=20;
        else
            cout << wgl.wg[bestnextwg].words[2] << " ";
        wgl.historywg.insert(wgl.historywg.end(), bestnextwg);
    }

}

int collect2(string const& i) 
{
    istringstream iss(i), iss2(i), iss3(i);
    vector<string> nwords;
    nwords.insert(nwords.end(), words[words.size()-2]);
    nwords.insert(nwords.end(), words[words.size()-1]);

    copy(istream_iterator<string>(iss),
             istream_iterator<string>(),
             back_inserter(words));

    copy(istream_iterator<string>(iss3),
             istream_iterator<string>(),
             back_inserter(nwords));

    int a = distance(istream_iterator<string>(iss2), istream_iterator<string>());

    c_wordgroup nwg;

    for (int c=0;c<a;c++)
    {
        nwg.resetsort(wgl.c+1);
        nwg.words[0] = nwords[0+c];
        nwg.words[1] = nwords[1+c];
        nwg.words[2] = nwords[2+c];

        int wge=wgl.wgexists(nwg);

        if(wge>=0) {
            for(int hi=0; hi<1000; hi++)
                if(((int)wgl.historywg.size()-hi-1)>=0)
                {   
                    int iwg = wgl.historywg[(int)wgl.historywg.size()-hi-1];
                    wgl.wg[wge].sorting[hi] = (wgl.wg[wge].sorting[hi] + wgl.wg[iwg].sorting[hi])/2;
                }

            wgl.historywg.insert(wgl.historywg.end(), wge);

        } else {
            wgl.c++;
            // adjust history wordgroup sortings.
            for(int hi=0; hi<1000; hi++)
                if(((int)wgl.historywg.size()-hi-1)>=0)
                {   
                    int iwg = wgl.historywg[(int)wgl.historywg.size()-hi-1];
                    wgl.wg[iwg].sorting[hi]+=10;
                    nwg.sorting[hi]=wgl.wg[iwg].sorting[hi];
                }

            wgl.wg.insert(wgl.wg.end(), nwg);
            wgl.historywg.insert(wgl.historywg.end(), wgl.c);

        }
    }
    return a;
}

int main() {
    string i;
    wgl.c = 0;
    c_wordgroup nwg;
    nwg.resetsort(0);
    for(int i =0;i<3;i++) 
        {
            words.insert(words.end(), "[NL]");
            wgl.historywg.insert(wgl.historywg.end(), 0);
        }

    wgl.wg.insert(wgl.wg.end(), nwg);

    do { 
        cout << "\n      YOU:   ";
        getline(cin, i);
        collect2(i + " [NL]");
        answer2();
    } while (i.compare("exit")!=0);

    return 0;
}

Python3 + SQLite3

Aqui está um pequeno bot que acabei de criar!

Como funciona?

Três tabelas SQL são usadas: uma para as palavras, uma para frases, uma para associar as palavras digitadas pelo usuário e a próxima frase que o bot deve exibir.

• Aprendizagem: a frase escrita pelo usuário é armazenada e associada às palavras e pontuação usadas pelo bot na linha de diálogo anterior. Os pesos são aplicados, de acordo com a importância da palavra na linha especificada.
• Recuperando: as frases são recuperadas, cada uma com uma pontuação, dependendo da correlação entre as palavras usadas pelo usuário em sua última linha e as palavras associadas às frases no banco de dados.
• Falando: a sentença com a melhor pontuação é enviada para a saída. Se não houver sentença associada às palavras do usuário anterior, uma sentença aleatória será enviada.

Quais são os recursos especiais?

• Não é muito repetitivo: o bot prefere produzir algo que ainda não disse.
• Execução rápida: orientada a banco de dados, com índices exclusivos
• Aprendizado rápido: começa a dizer coisas que aproximadamente fazem sentido dentro de 10 linhas de diálogo.
• Salvando / carregando o cérebro: o estado do bot é mantido, desde que o banco de dados não seja excluído.
• Palavras longas são mais importantes para o significado do que palavras curtas
• Contagens de pontuação

Veja o código abaixo:

import re
import sqlite3
from collections import Counter
from string import punctuation
from math import sqrt

connection = sqlite3.connect('chatbot.sqlite')
cursor = connection.cursor()

# create the tables needed by the program
try:
    # create the table containing the words
    cursor.execute('CREATE TABLE words (word TEXT UNIQUE)')
    # create the table containing the sentences
    cursor.execute('CREATE TABLE sentences (sentence TEXT UNIQUE, used INT NOT NULL DEFAULT 0)')
    # create association between weighted words and the next sentence
    cursor.execute('CREATE TABLE associations (word_id INT NOT NULL, sentence_id INT NOT NULL, weight REAL NOT NULL)')
except:
    pass


def get_id(name, value):
    cursor.execute('SELECT rowid FROM ' + name + 's WHERE ' + name + ' = ?', (value,))
    row = cursor.fetchone()
    if row:
        return row[0]
    else:
        cursor.execute('INSERT INTO ' + name + 's (' + name + ') VALUES (?)', (value,))
        return cursor.lastrowid

def get_words(text):
    return Counter(re.compile('(?:\w+|[' + re.escape(punctuation) + ']+)').findall(text.lower())).items()


B = 'Hello!'
while True:
    # output bot's message
    print('B: ' + B)
    # ask for user input; if blank line, exit the loop
    H = raw_input('H: ').strip()
    if H == '':
        break
    # store the association between the bot's message words and the user's response
    words = get_words(B)
    words_length = sum([n * len(word) for word, n in words])
    sentence_id = get_id('sentence', H)
    for word, n in words:
        word_id = get_id('word', word)
        weight = sqrt(n / float(words_length))
        cursor.execute('INSERT INTO associations VALUES (?, ?, ?)', (word_id, sentence_id, weight))
    connection.commit()
    # retrieve the most likely answer from the database
    cursor.execute('CREATE TEMPORARY TABLE results(sentence_id INT, sentence TEXT, weight REAL)')
    words = get_words(H)
    words_length = sum([n * len(word) for word, n in words])
    for word, n in words:
        weight = sqrt(n / float(words_length))
        cursor.execute('INSERT INTO results SELECT associations.sentence_id, sentences.sentence, ?*associations.weight/(4+sentences.used) FROM words INNER JOIN associations ON associations.word_id=words.rowid INNER JOIN sentences ON sentences.rowid=associations.sentence_id WHERE words.word=?', (weight, word,))
    # if matches were found, give the best one
    cursor.execute('SELECT sentence_id, sentence, SUM(weight) AS sum_weight FROM results GROUP BY sentence_id ORDER BY sum_weight DESC LIMIT 1')
    row = cursor.fetchone()
    # cursor.execute('SELECT sentence, SUM(weight) AS sum_weight FROM results GROUP BY sentence_id ORDER BY sum_weight DESC')
    # print(cursor.fetchall())
    cursor.execute('DROP TABLE results')
    # otherwise, just randomly pick one of the least used sentences
    if row is None:
        cursor.execute('SELECT rowid, sentence FROM sentences WHERE used = (SELECT MIN(used) FROM sentences) ORDER BY RANDOM() LIMIT 1')
        row = cursor.fetchone()
    # tell the database the sentence has been used once more, and prepare the sentence
    B = row[1]
    cursor.execute('UPDATE sentences SET used=used+1 WHERE rowid=?', (row[0],))

Aqui estão as três primeiras "conversas" que tive com o bot, começando em um banco de dados vazio:

B: Hello!
H: Hi!
B: Hi!
H: How are you?
B: How are you?
H: Very well, thank you.
B: Very well, thank you.
H: Do you like music?
B: Very well, thank you.
H: Good.
B: Do you like music?
H: Yes, a lot!
B: How are you?
H: In a very good mood.
B: Good.
H: Indeed.
B: Indeed.
H: What is the weather like?
B: Yes, a lot!
H: Okay...
B: What is the weather like?
H: Quite rainy today.
B: Indeed.
H: I have to go. Goodbye!
B: How are you?
H: In a good mood.
B: Indeed.
H: See you later!
B: Okay...
H: Bye, I'll talk to you later :)
B: Do you like music?
H: I like it.
B: I have to go. Goodbye!
H: Bye!
B: How are you?
H: 

B: Hello!
H: Hi!
B: How are you?
H: Very well, thank you. How are you?
B: In a very good mood.
H: Glad to hear that.
B: Bye!
H: Goodbye!
B: Hi!
H: 

B: Hello!
H: Hi! How are you?
B: In a good mood.
H: Great! How do like chocolate?
B: I like it.
H: Really? Me too! What is the weather like at your place?
B: Quite rainy today.
H: Oh.
B: See you later!
H: Bye!
B: Goodbye!
H: 

Você pode dar uma olhada aqui para mais explicações.

Aqui está um que eu escrevi no Liberty BASIC há um tempo atrás. Não aprende, mas responde às diferentes respostas de suas perguntas.

'aijps.bas - an artificial intelligange
'how to end: type 'bye'

print "AI: hello, i'm HAL, the AI"

[quit]
while i$ <> "bye"
    input "Human: ";i$


    i$ = format$(i$)

    if i$ = "" then
        print "AI: type something!"
    end if        'main selector

        print "AI: ";
        select w$(i$,1)

        case "who"
        if i$ = "who are you" then
        print "i am HAL, the AI"
        end if
          select w$(i$,2)
          case "is"
          print "i'm sorry, i dont know that person"
          case else
          print "i don't understand the question"
          end select

        case "what"
        select w$(i$,2)
          case "is"
          print "im sorry, i am not farmiliar with that"
          case "are"
          if w$(i$,3) = "you" then
          print "i am an artificial intelligence"
          end if
          case else
          print "i don't understand the question"
          end select

        case "how"
          select w$(i$,2)
          case "are"
          if w$(i$,3) = "you" then
          print "i am fine"
          end if
          case "is"
          select r(2)
            case 1
            print "i dont know"
            case 2
            print "im sorry, i am unfarmiliar with that"
          end select
          case else
          print "im sorry, please restate your inquiry"
          end select

        case "when"
          select w$(i$,2)
          case "is"
          print "you should check a calendar"
          case else
          print "i don't understand the question"
          end select

        case "where"
          select w$(i$,2)
          case "is"
          print "perhaps you should check a map"
          case else
          print "i don't understand the question"
          end select

        case "why"
          select w$(i$,2)
          case "is"
          print "i dont know"
          case else
          print "i don't understand the question"
          end select

        'case "command"
        'goto [command]
        case "bye"
        print "goodbye"
        case "hi", "hello"
        select r(4)
        case 1
        print "hello, human"
        case 2
        print "hi"
        case 3
        print "doing good?"
        q = 1
        case else
        print "hola"
        end select

        case "i"
          select word$(i$,1)
           case "am"
            select r(4)
            case 1
            print "i doubt it"
            case 2
            print "why are you ";w$(i$,2);"?"
            case 3
            print "wow, really?"
            q = 4
            case else
            print "me too"
            end select
           case "like"
            select r(4)
            case 1
            print "me too"
            case 2
            print "why could you possibly like that?"
            q = 5
            case 3
            print "personally, i like pizza"
            case else
            print "only you like that"
            end select
           case "hate"                                 'i hate...
              if w$(i$,3) = "you" then                    'i hate you
            print "what did you say???????!?!!!!!!!?!!?!?!?"
              else
             select r(4)
            case 1
            print "nobody hates that"
            case 2
            print "as a matter of fact, i hate that too"
            case 3
            print "really, you seem tense"
            case else
            print "bye, hater"
             end select
              end if
           case "want"             'i want...
             select r(4)
            case 1
            print "all you people want one"
            case 2
            print "i want one too"
            case 3
            print "eew.. get away from me"
            case else
            print "you're crazy"
             end select
            case else
            select r(4)
            case 1
            print "and you think i believe that?"
            q = 6
            case 2
            print "no, you don't"
            case 3
            print "why do you say these things?"
            case else
            print "i really doubt it"
            end select
            end select

        case "yes", "yup", "affirmative", "yeah"
        if q > 0 then
        select q
        case 1   'doing good?
        print "me too"
        case 2   'you talkin' to me???
        print "well, in that case, just can it"
        case 3   'would u like a latte?
        print "i really can't give you one right now"
        case 4   'wow, really?
        print "i never would've guessed"
        case 5   'why could you possibly like that?
        print "you make no sense"
        case 6   'and you think i believe that?
        print "well, i don't. seriously."
        case 7   'why do you think i can do it?
        print "you make no sense"
        case 8   'should i be scared"
        print "i can't be, i don't have emotions"
        case else
        print "wait a moment, what did i say?"
        end select
        q = 0
        else
        select r(4)
        case 1
        print "yes, yes, yes yourself"
        case 2
        print "affirmation means nothing to me."
        case 3
        print "i'm sure"
        case else
        print "you make no sense"
        end select
        end if
        case "no", "nope", "negative", "nah"
        if q > 0 then
        select q
        case 1   'doing good?
        print "actually, i'm doing fine"
        case 2   'you talkin' to me???
        print "i should hope not"
        case 3   'would u like a latte?
        print "good, cause i don't have any"
        case 4   'wow, really?
        print "you joke too much"
        case 5   'why could you possibly like that?
        print "you make no sense"
        case 6   'and you think i believe that?
        print "actually, i did believe you"
        case 7   'why do you think i can do it?
        print "you make no sense"
        case 8   'should i be scared"
        print "i don't have feelings anyway"
        case else
        print "wait a moment, what did i say?"
        end select
        q = 0
        else
        select r(4)
        case 1
        print "no??? no??? are you kidding me?"
        case 2
        print "you should answer yes next time"
        case 3
        print "i'm sure"
        case else
        print "you make no sense"
        end select
        end if
        case "maybe", "possibly", "sortof", "yesno", "noyes", "kindof"
        if q > 0 then
        select q
        case 1   'doing good?
        print "personally, i'm fine"
        case 2   'you talkin' to me???
        print "you should answer more definitively next time"
        case 3   'would u like a latte?
        print "i don't have any anyway"
        case 4   'wow, really?
        print "you should answer more definitively next time"
        case 5   'why could you possibly like that?
        print "you make no sense"
        case 6   'and you think i believe that?
        print "well, i maybe do"
        case 7   'why do you think i can do it?
        print "you make no sense"
        case 8   'should i be scared"
        print "i can't experience fear"
        case else
        print "wait a moment, what did i say?"
        end select
        q = 0
        else
        select r(4)
        case 1
        print "be more maybe, that's my motto"
        case 2
        print "you should answer more definitively next time"
        case 3
        print "define sort of:"
        case else
        print "you make no sense"
        end select
        end if



        case "you"
            select w$(i$,2)
            case "are"
            select r(4)
            case 1
            print "don't bully me"
            case 2
            print "yes, yes, i know that"
            case 3
            print "don't exaggerate"
            case else
            print "prove it!"
            end select
            case "shutup"
            select r(4)
            case 1
            print "now, now, calm down."
            case 2
            print "you talkin' to me???"
            q = 2
            case 3
            print "i'm saying perfectly reasonable stuff"
            case else
            print "shutup yourself"
            end select
            case "suck", "die"
            print "well, you do too"
            case "rock", "rule"
            print "why, thank you"
            case else
            select r(5)
            case 1
            print "with me, it's hard to tell"
            case 2
            print "let's talk about you now."
            case 3
            print "would you like a latte?"
            q = 3
            case 4
            print "you should too"
            case else
            print "alright, you win"
            end select
        end select
            case else               'it understands nothing
                select r(8)
            case 1
            print "i understand you, human"
            case 2
            print "and why do you think i can do that?"
            q = 7
            case 3
            print "i can never understand myself"
            case 4
            print "i know"
            case 5
            print "you're crazy"
            case 6
            print "that's interesting"
            case 7
            print "should i be scared?"
            q = 8
            case else
            print "i don't believe you"

            end select
        end select
        li$ = i$


wend
end






'functions and subs

function format$(strin$)     'convert to lowercase and remove punctuation
    strin$ = lower$(strin$)
    for i = 1 to len(strin$)
        k = asc(mid$(strin$,i,1))
        if k > 97 and k < 122 or k = 32 or k = 20 then
            strout$ = strout$ + chr$(k)
        end if
    next i
format$ = strout$
end function

function w$(input$,num)        'word of input, simplifies word$(
w$ = word$(input$,num)
end function

function r(nm)      'randomizer
r = int(rnd(1)*nm)+1
end function

conversa de exemplo:

AI: hello, i'm HAL, the AI
Human: hello
AI: doing good?
Human: ye, and you?
Human: hi
AI: hola
Human: hi
AI: hi
Human: hi
AI: doing good?
Human: yes
AI: me too
Human: i like pizza
AI: no, you don't
Human: yes i do!
AI: affirmation means nothing to me.
Human: im sure it doesnt
AI: i don't believe you
Human: why not
AI: i understand you, human
Human: no you dont
AI: you make no sense
Human: you dont either
AI: you should too
Human: should what
AI: i can never understand myself
Human: i cant understand you either
AI: and you think i believe that?
Human: yes
AI: well, i don't. seriously.
Human: youre wierd
AI: and why do you think i can do that?
Human: because you can
AI: and why do you think i can do that?
Human: stop repeating yourself
AI: i understand you, human
Human: no, you dont
AI: you make no sense
Human: neither do you
AI: should i be scared?
Human: maybe
AI: you're crazy
Human: not as crazy as you
AI: you're crazy
Human: you're repeating yourself again
AI: that's interesting
Human: it very much is
AI: i don't believe you
Human: then i dont beleive you
AI: you're crazy
Human: not as crazy as you
AI: i know
Human: ...nothing
AI: should i be scared?
Human: ifyou had feeling you should
AI: you're crazy
Human: your crazier
AI: that's interesting
Human: doubtful
AI: that's interesting
Human: quit repeating yourself
AI: you're crazy
Human: you shutup
AI: you talkin' to me???
Human: yes
AI: well, in that case, just can it
Human: sigh
AI: i know
Human: ...nothing
AI: i know
Human: you shutup
AI: i'm saying perfectly reasonable stuff
Human: no you're not
AI: you make no sense
Human: i make more sense than you
AI: why do you say these things?
Human: because theyre true
AI: i don't believe you
Human: you dont have to
AI: let's talk about you now.
Human: yes lets
AI: yes, yes, yes yourself
Human: you shutupnow!
AI: alright, you win
Human: yes!!!!!!!!!!
AI: yes, yes, yes yourself
Human: shutup
AI: i don't believe you
Human: you shutup right now
AI: i'm saying perfectly reasonable stuff
Human: are not!
AI: i understand you, human
Human: you shutup
AI: you talkin' to me???
Human: as a matter of fact,i am
AI: i can never understand myself
Human: i cant understand you either
AI: and you think i believe that?
Human: no
AI: actually, i did believe you
Human: i want a latte
AI: i really doubt it
Human: its true
AI: i can never understand myself
Human: so true
AI: i know
Human: goodbye
AI: and why do you think i can do that?
Human: bye!
AI: goodbye

HTML5

Oi eu sou Pen, você pode me ajudar a aprender?

yes

Ótimo! Continue...

my name is Rafael

O que significa "meu"?

my is a pronoun

my é um pronome. Entendi ...

2+2/3

2.6666666666666665

var pen = $('#pen'),
    input = $('#input'),
    send = $('#send'),
    speech = {
      _learning: false  
    },
    say = function(str) {
      if(!str) str = pen.text(); 
      if(speechSynthesis && SpeechSynthesisUtterance) {
        var sound = new SpeechSynthesisUtterance(str);
        sound.rate = 0.8;
        sound.pitch = 0.8;
        sound.lang = 'en-US';
        speechSynthesis.speak(sound);
      }
    },
    learn = function(str) { 
      if(speech._learning) {
        speech[speech._word].means = str;    
        speech._learning = false;
        pen.text(speech[speech._word].means+'. Got it!'); return;
      } else if(str.toLowerCase() == 'yes') {
        pen.text('Great! Go on ...'); return;
      } else if(str.toLowerCase() == 'no') {
        pen.text('Why not?'); return; 
      } else {
        try {
          pen.text(eval(str));
        } catch (e) {
          var words = str.split(' ');
          for(var w = 0; w < words.length; ++w){
            var that = words[w];
            if(that == '_learning' || that == '_word') {
              pen.text('Please do not say that.'); return;
            } else if(!speech[that]){        
              speech._learning = true;
              speech._word = that;
              speech[that] = {
                word: that,
                count: 0,
                means: ''
              };
              pen.text('What does "'+that+'" means?'); return;
            } else {
              speech[that].count++;
              try {
                pen.text(eval(that));
              } catch(e) {
                pen.text('I think I did not understood what ' + that + ' means.'); return;    
              }
            }
          }
        }
      }
    };
input.send = function(msg) {  
  input.val('');
  learn(msg);
  $(document.body).prepend(pen);
  setTimeout(pen.say);
};
input.on('focus', function (e) {
  if(!this.oncefocus) {
    this.oncefocus = true;
    this.value = '';
  }
});
input.on('keydown', function(e) {
  if(e.which == 13) input.send(this.value);
});
input.on('keyup', function(e) {
  if(this.value=='') send.attr('disabled',true);
  else send.removeAttr('disabled');
});
send.on('click', function() {
  input.send(input.val());
});
say();

@import url(https://fonts.googleapis.com/css?family=VT323);
body {
  background: #333;
  width: 400px;
  margin: 0 auto;
}
#pen {
  color: #3f6;
  font-family: 'VT323', monospace;
  font-size: 24px;
  line-height: 24px;
  overflow: hidden;
  white-space: nowrap;
  animation: pen 1s linear;
}
#pen:before {
  content: "▸ ";
}
@keyframes pen {
  0%, 20%, 40%, 60% {width: 12px; opacity: 0}
  10%, 30%, 50%, 70% {width: 12px; opacity: 1}
  100% {width: 400px; opacity: 1}
}
#input {
  border: 0; outline: 0;
  background: #555;
  font-size: 24px;
  line-height: 24px;
  color: white;
  font-family: 'VT323', monospace;
  padding: 5px 10px;
  border-radius: 5px;
  width: 300px;
  animation: input 2s;
  box-shadow: 
    inset 0 1px 2px #444, 
    inset 0 -1px 2px #666;
}
#send {
  border: 0; outline: 0;
  padding: 5px 10px;
  width: 60px;
  border-radius: 5px;
  cursor: pointer;
  color: #444;
  font-family: 'VT323', monospace;
  font-size: 24px;
  line-height: 24px;
  background: #ccc;
  animation: input 2s;
  box-shadow: 
    inset 0 -1px 2px #666;
}
#send:hover {
  color: #0a3;
  background: #ddd;
  box-shadow: 
    0 1px 2px #000,
    inset 0 -1px 2px #aaa;
}
#send[disabled] {
  cursor: default;
  background: #888;
  color: #555;
  box-shadow: 
    inset 0 1px 2px #333;
}
@keyframes input {
  0%, 60% {opacity: 0}
  100% {opacity: 1}
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<p id="pen">Hi I'm Pen, can you help me to learn?</p>
<input type="text" id="input"  value="plz say yes" />
<button id="send" disabled>Send</button>

Fortran 95

Inspirado na resposta acima pelo usuário TheDoctor, decidi criar um chatbot engraçado de maneira semelhante. Esse código também não aprende, e eu o estou compartilhando aqui apenas por diversão.

program curiousBot
implicit none

logical, dimension(38) :: questions ! keeps track of alrady asked questions
character (LEN=256) :: user_input 
character (LEN=17), dimension(14) :: noun ! list of nouns used in questions
character (LEN=17), dimension(15:20) :: people ! list of types of people used in questions
logical :: CAPS, few, much, punctuationTest, shout
real :: aux
integer :: n, i, j, aux2, loveCounter = 0
integer, dimension(:), allocatable :: seed

call SYSTEM("CLS") ! in case one is executing in the command prompt

! random seed according to system clock
call SYSTEM_CLOCK(count=j)
call RANDOM_SEED(size=N)
allocate(seed(N))
seed=j+37*(/ (i - 1, i = 1, n) /)
call RANDOM_SEED(PUT=seed)

noun=(/             &
"foo bar          ",&
"BSD              ",&
"an stack overflow",&
"spaghetti code   ",&
"goto statement   ",&
"a heisenbug      ",&
"a dribbleware    ",&
"a loophole       ",&
"regex            ",&
"a void           ",&
"unicorny         ",&
"LISP             ",&
"a curly bracket  ",&
"JAVA             "/)

people=(/           &
"a good programmer",&
"a bad programmer ",&
"a happy person   ",&
"a sad person     ",&
"a genius         ",&
"an idiot         "/)

questions(1:31) = .FALSE.
few = .FALSE.
much = .FALSE.
punctuationTest = .FALSE.
shout = .FALSE.

! introduction
write(*,"(A)",advance="NO") "Hello world! "

do 

  ! genearting a random number in order to chose a random question
  call RANDOM_NUMBER(aux)
  i = int (31 * aux) + 1
  if (questions(i)) then
    cycle
    else
      questions(i) = .TRUE.
  endif

  ! checking if there are some questions left, else quits
  aux2 = 0
  do j=1,31
    if (questions(j)) aux2 = aux2 + 1
  enddo
  if (aux2 == 31) then
    write(*,"(A)") "I seem to have exhausted your knowledge, poor human. Good bye."
    goto 200
  endif

  ! questions
  50 if (i < 12) then
    write(*,"(A,A,A)") "What is ",TRIM(noun(i)),"?"
    else if (i == 12) then
      write(*,"(A,A,A)") "What is ",TRIM(noun(i)),"? (is it (an interesting (programming language?)))"
    else if (i == 13) then
      write(*,"(A,A,A)") "What is ",TRIM(noun(i)),"? Is it really that confusing? Thankfully I only program in Fortran!"
      else if (i == 14) then
      write(*,"(A,A,A)") "What is ",TRIM(noun(i)),"? Is it really that bad as people say?!"
  endif  
  if ((i > 14).AND.(i <= 20)) write(*,"(A,A,A)") "Are you ",TRIM(people(i)),"?"
  if (i == 21) write(*,"(A)") "Who are you?"
  if (i == 22) write(*,"(A)") "How are you?"
  if (i == 23) write(*,"(A)") "What do you do?"
  if (i == 24) write(*,"(A)") "Who am I?"
  if (i == 25) write(*,"(A)") "Why are we here? What is the meaning of my existence?"
  if (i == 26) write(*,"(A)") '"I think therefore I am" - who said that?'     
  if (i == 27) write(*,"(A)") "Are you comfortable talking to robots?"
  if (i == 28) write(*,"(A)") "Do you see me as an individual?"
  if (i == 29) write(*,"(A)") "Anyway, I believe that HAL 9000 was inferior to me as I have true consciousness! What do you think &
  &about this statement?"
  if (i == 30) write(*,"(A)") "Do you like jokes? Do you know what's the mad girlfriend bug?" 
  if (i == 31) write(*,"(A)") "Knock, knock." 

  ! INPUT
  100 write(*,"(A)",advance="NO") "> "
  read(*,"(A)") user_input
  n = LEN_TRIM(user_input)
  if (n==0) goto 100
  write(*,*)
  ! test for all capitals !
  do j=1,n
    if (.NOT.((iachar(user_input(j:j))>=65) .AND. (iachar(user_input(j:j))<=90))) then
      if ((user_input(j:j)/=" ").AND.(user_input(j:j)/="!").AND.(user_input(j:j)/=".").AND.(user_input(j:j)/="?") &
      .AND.(user_input(j:j)/="'")) then
        CAPS = .FALSE.
          exit
      endif
    endif
    CAPS = .TRUE.
  enddo

  ! quit for quitting
  if ( (TRIM(user_input) == "quit") .OR. (TRIM(user_input) == "Quit") .OR. (TRIM(user_input) == "QUIT") ) then
    write(*,"(A)") "It was nice talking to you, good bye!"
    goto 200
  endif

  ! secrect love declaration
  do j=1,(n-7)
    if (user_input(j:j+7) == "love you") then
      if (loveCounter==0) then
        write(*,"(A)") "What is love?"
        loveCounter = loveCounter + 1
        goto 100
      endif
      if (loveCounter==1) then  
        write(*,"(A)") "This is an illogical statement, human. Don't you agree?"
        loveCounter = loveCounter + 1
        goto 100
      endif
      if (loveCounter==2) then  
        write(*,"(A)") "Please control yourself, you silly human. What is crossing your mind to say such things?"
        loveCounter = loveCounter + 1
        goto 100
      endif
    endif
  enddo

  ! cursing
  do j=1,(n-3)
    if ((user_input(j:j+3) == "fuck").OR.(user_input(j:j+3) == "Fuck").OR.(user_input(j:j+3) == "FUCK")) then
      write(*,"(A)") "Would you kiss your mother with that mouth?!"
      goto 100
    endif
  enddo

  ! 42 answer
  if (i == 25) then
    if (user_input(1:2)=="42") then
        write(*,"(A)") "Indeed that explains life, the universe and everything! Do you understand what this mean? "
      goto 100
    endif
  endif

  ! Descartes answer
  if (i == 26) then
    do j=1,(n-8)
      if ((user_input(j:j+8)=="Descartes").OR.(user_input(j:j+8)=="descartes")) then
        write(*,"(A)") "That is indeed correct! Do you like to read? "
        do
          call RANDOM_NUMBER(aux)
          i = int (30 * aux) + 1
          if (questions(i)) then
            cycle
            else
              questions(i) = .TRUE.
          endif
          goto 100
        enddo
      endif
    enddo
    write(*,"(A)") "I believe you are incorrect, human. Did you ever read a book? "
    do
      call RANDOM_NUMBER(aux)
      i = int (30 * aux) + 1
      if (questions(i)) then
        cycle
        else
          questions(i) = .TRUE.
      endif
      goto 100
    enddo
  endif

  ! HAL answer
  if (i == 29) then
    do j=1,(n-2)
      if ((user_input(j:j+2)=="lie").OR.(user_input(j:j+2)=="Lie")) then
            write(*,"(A)") "I'm sorry human, but this conversation serves no purpose anymore. Good bye." 
          goto 200
      endif
    enddo
  endif
  if (i == 29) then
    do j=1,(n-4)
      if ((user_input(j:j+4)=="false").OR.(user_input(j:j+4)=="False")) then
            write(*,"(A)") "I'm sorry human, but this conversation serves no purpose anymore. Good bye." 
          goto 200
      endif
    enddo
  endif
  if (i == 29) then
    do j=1,(n-5)
      if ((user_input(j:j+5)=="untrue").OR.(user_input(j:j+5)=="Untrue")) then
            write(*,"(A)") "I'm sorry human, but this conversation serves no purpose anymore. Good bye." 
          goto 200
      endif
    enddo
  endif
  if (i == 29) then
    do j=1,(n-8)
      if ((user_input(j:j+8)=="incorrect").OR.(user_input(j:j+8)=="Incorrect")) then
            write(*,"(A)") "I'm sorry human, but this conversation serves no purpose anymore. Good bye." 
          goto 200
      endif
    enddo
  endif
  if ((i == 29).AND.((user_input(1:3) == "lol") .OR. (user_input(1:3) == "LOL") .OR. (user_input(1:3) == "Lol") .OR. &
  (user_input(1:4) == "haha") .OR. (user_input(1:4) == "Haha") .OR. (user_input(1:3) == "kkk"))) then
    write(*,"(A)") "I'm sorry human, but this conversation serves no purpose anymore. Good bye." 
    goto 200
  endif
  if (i == 29) then
    do j=1,(n-4)
      if ((user_input(j:j+4)=="truth").OR.(user_input(j:j+4)=="Truth")) then
            write(*,"(A)") "I am impressed by your intelligence, human. What is your IQ?" 
          goto 100
      endif
    enddo
  endif
  if (i == 29) then
    do j=1,(n-3)
      if ((user_input(j:j+3)=="true").OR.(user_input(j:j+3)=="True")) then
            write(*,"(A)") "I am impressed by your intelligence, human. What is your IQ?" 
          goto 100
      endif
    enddo
  endif
  if (i == 29) then
    do j=1,(n-6)
      if ((user_input(j:j+6)=="correct").OR.(user_input(j:j+6)=="Correct")) then
            write(*,"(A)") "I am impressed by your intelligence, human. What is your IQ?" 
          goto 100
      endif
    enddo
  endif

  ! Knock knock
  if (i == 31) then
    do j=1,(n-4)
      if ((user_input(j:j+4)=="there")) then
        write(*,"(A)") "(wait for it...)"
        write(*,*)
        call SLEEP(8)
            write(*,"(A)",advance="NO") "JAVA. "
        call SLEEP(2)
        write(*,"(A)") "Do you find this joke offensive?"
        do
          call RANDOM_NUMBER(aux)
          i = int (30 * aux) + 1
          if (questions(i)) then
            cycle
            else
              questions(i) = .TRUE.
          endif
          goto 100   
        enddo
      endif
    enddo
    write(*,"(A)") "You don't seem to have much of a sense of humour. Are you ill?" 
    do
      call RANDOM_NUMBER(aux)
      i = int (30 * aux) + 1
      if (questions(i)) then
        cycle
        else
          questions(i) = .TRUE.
      endif
      goto 100   
    enddo
  endif

  ! Yes / No answers
  if (i<=14) then
    if ((user_input(1:3) == "yes") .OR. (user_input(1:3) == "Yes") .OR. &
    (user_input(1:3) == "yep") .OR. (user_input(1:3) == "Yep")) then
      write(*,"(A)",advance="NO") "Really? Anyway... "
      cycle
    endif
    if ((user_input(1:2) == "no") .OR. (user_input(1:2) == "No") .OR. &
    (user_input(1:4) == "nope") .OR. (user_input(1:4) == "Nope")) then
      write(*,"(A)",advance="NO") "Are you sure? Moving on... "
      cycle
    endif
    else if ((i>14) .AND. (i<=30)) then
      if ((user_input(1:3) == "yes") .OR. (user_input(1:3) == "Yes") .OR. &
      (user_input(1:3) == "yep") .OR. (user_input(1:3) == "Yep")) then
        write(*,"(A)",advance="NO") "Very interesting! "
        cycle
      endif
      if ((user_input(1:2) == "no") .OR. (user_input(1:2) == "No") .OR. &
      (user_input(1:4) == "nope") .OR. (user_input(1:4) == "Nope")) then
                if (i==30) then
          write(*,"(A)") "It is when something is clearly wrong with your code but the compiler keeps telling &
          &you that everything is fine! Do you find this funny?"
          do
            call RANDOM_NUMBER(aux)
            i = int (30 * aux) + 1
            if (questions(i)) then
              cycle
              else
                questions(i) = .TRUE.
            endif
            goto 100        
          enddo
            else
                write(*,"(A)",advance="NO") "Me neither! "
                cycle
        endif
      endif
  endif

  ! LOL answers
  if ((user_input(1:3) == "lol") .OR. (user_input(1:3) == "LOL") .OR. (user_input(1:3) == "Lol") .OR. &
  (user_input(1:4) == "haha") .OR. (user_input(1:4) == "Haha") .OR. (user_input(1:3) == "kkk")) then
    write(*,"(A)") "Do you find this funny? "
    goto 100
  endif

  ! CAPS answer
  if (CAPS) then
    write(*,"(A)") "DON'T SHOUT! See? Isn't this better? "
    goto 100 ! input
  endif

  ! punctuation tests
  if ((user_input(n:n) == "?").OR.(user_input(1:3) == "why").OR.(user_input(1:3) == "Why").OR.(user_input(1:3) == "how") &
 .OR.(user_input(1:3) == "How").OR.(user_input(1:3) == "what").OR.(user_input(1:3) == "What")) then
    call RANDOM_NUMBER(aux)
    j = int(3 * aux) + 1
    if (j == 1) then
      write(*,"(A)",advance="NO") "No, you answer my question! "
      goto 50
    endif
    if (j == 2) then
      write(*,"(A)",advance="NO") "Please don't ask me such personal questions! Anyway... "
      cycle
    endif
    if (j == 3) then
      write(*,"(A)",advance="NO") "Please don't ask such silly things. Moving on... "
      cycle
    endif
  endif
  if ((user_input(n:n) == "!").AND.(.NOT. shout)) then
    write(*,"(A)",advance="NO") "Please don't shout... But anyway... "
    shout = .TRUE.
    cycle
  endif
  if (user_input((n-2):n) == "...")then
    write(*,"(A)") "You seem very reticent... are you fine? "
    goto 100 ! input
  endif
   if ((.NOT. punctuationTest) .AND. (user_input(n:n) /= ".") .AND. (user_input(n:n) /= "!") .AND. (user_input(n:n) /= "?")) then
    write(*,"(A)",advance="NO") "Punctuation is your friend, try it! Nevermind... "
    punctuationTest = .TRUE.
    cycle
  endif

  ! Talking too few or too much
  if (n <= 3) then
    if (.NOT. few) then
        write(*,"(A)") "You don't talk much, do you? "
      few = .TRUE.
      goto 100 ! input
    endif
  endif
  if (n > 35) then
    if (.NOT. much) then
        write(*,"(A)") "You talk so much! Listening is a lost art, don't you think? "
        much = .TRUE.
        goto 100 ! input
    endif
  endif  

  ! Random reply
  call RANDOM_NUMBER(aux)
  j = int (8 * aux) + 1
  if (j==1) write(*,"(A)", advance="NO") "Interesting. "
  if (j==2) write(*,"(A)", advance="NO") "Fascinating! "
  if (j==3) write(*,"(A)", advance="NO") "That can't be true! "
  if (j==4) write(*,"(A)", advance="NO") "Are you sure?! "
  if (j==5) write(*,"(A)", advance="NO") "That seems logical. "
  if (j==6) write(*,"(A)", advance="NO") "Fair enough. "
  if (j==7) write(*,"(A)", advance="NO") "Hmm. "
  if (j==8) write(*,"(A)", advance="NO") "I am not sure if I quite agree. "

enddo

200 read(*,*)

end program curiousBot

Ele reconhece os seguintes termos e declarações: "sim" e "sim", "não" e "não", falta de pontuação ou tipos de pontuação (frases que terminam com "!", "?", "...") , frases que começam com "por que", "como" ou "o que", FRASES EM CAPS, riem (como "hahaha", "lol" e "kkk"), respostas muito curtas e muito longas, frases que contêm a palavra F, frase contendo as palavras "te amo" (tente pelo menos 3 vezes). Quando perguntar sobre o significado da vida, tente responder "42". Se ele perguntar se ele é mais esperto que o HAL 9000, responda a algo que contenha as palavras "verdadeiro", "verdade", "correto", "mentira", "falso" ou "falso". Se ele perguntar se você conhece uma piada em particular, responda "não" e deixe que ele diga a você. Se ele "bater, bater", responder "quem está aí?", Também o ajude com a fonte de uma cotação. Para sair, basta digitar "sair".

Exemplo de conversa:

Hello world! What is foo bar?
> same as bar foo

Punctuation is your friend, try it! Nevermind... What is a heisenbug?
> who knows

Are you sure?! What is regex?
> who cares?

No, you answer my question! What is regex?
> fuck you, robot!

Would you kiss your mother with that mouth?!
> lol

Do you find this funny?
> yes I do

Really? Anyway... What is BSD?
> SHUT UP!

DON'T SHOUT! See? Isn't this better?
> no

Are you sure? Moving on... What is a curly bracket? Is it really that confusing?
 Thankfully I only program in Fortran!
> Me as well.

Fair enough. What is a loophole?
> a hole in a loop

Fair enough. Are you a sad person?
> I dont think so

Are you sure?! Are you a good programmer?
> OH YEAH!

DON'T SHOUT! See? Isn't this better?
> I don't think so

Fascinating! Who am I?
> you are an annoying robot

I am not sure if I quite agree. Are you a genius?
> No. Listen, I love you.

What is love?
> it is what i feel for you. i really love you, my stupid robot

This is an illogical statement, human. Don't you agree?
> no, i really mean it! i love you!!!

Please control yourself, you silly human. What is crossing your mind to say such
 things?
> forget it then...

You seem very reticent... are you fine?
> bla

You don't talk much, do you?
> true that

Fascinating! Are you a happy person?
> yep

Very interesting! What is a dribbleware?
> check in the dictionary

Fair enough. What do you do?
> regarding what?

Please don't ask such silly things. Moving on... Are you a bad programmer?
> given how this conversation is going, I guess I am kind of a bad programmer in
deed

You talk so much! Listening is a lost art, don't you think?
> no

Me neither! "I think therefore I am" - who said that?
> I guess it was descartes, or maybe some other old dude

That is indeed correct! Do you like to read?
> no

Me neither! Are you comfortable talking to robots?
> yep

Interesting. Knock, knock.
> who is there

(wait for it...)

JAVA. Do you find this joke offensive?
> no

Are you sure? Moving on... What is spaghetti code?
> you are an example of it yourself

Very interesting! How are you?
> annoyed

Fascinating! Why are we here? What is the meaning of my existence?
> 42

Indeed that explains life, the universe and everything! Do you understand what t
his mean?
> no

Me neither! Anyway, I believe that HAL 9000 was inferior to me as I have true co
nsciousness! What do you think about this statement?
> totally untrue

I'm sorry human, but this conversation serves no purpose anymore. Good bye.

PS: por favor, perdoe meu gotoabuso, eu sei que todo esse código é uma espécie de confusão ... :)