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Asked: 2026-06-08T17:35:35+00:00

I’ve been trying to create a chatbot (as an assignment) in prolog, so far

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I’ve been trying to create a chatbot (as an assignment) in prolog, so far I have made a database in a .pl file and I have listed a lot of possible conversations.
I know that prolog works like this for example if we have 

Chatbot(good)

and we type 

?-Chatbot(good).

it will respond 

yes or ture.

Now I don’t know how to use my database so that the program can work exactly as a chatbot for example without the need to write in appropriate syntax:

Hello (typed by the user)

Hi there, (typed by the program automatically)

My database is like this:

answer( question, [
[Yes, I am here]]).

question ([are you there?])
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1 Answer

  1. Editorial Team

    The prototype chatbot I’m aware of is ELIZA by Weizenbaum 1966.

    Implementing it in Prolog is rather easy, as shown in The Art of Prolog by Sterling & Shapiro.

    Googling for ‘ELIZA Prolog’, the first link gives you a fairly complex implementation, and you could adapt/reuse the engine with your database. But this way you will lose all the fun. I suggest you read the book and take the time to implement your own.

    edit

    Just in case you haven’t still seen it, SWISH offers a clean, barebone ELIZA implementation among its examples.

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