Brought to you by Salvatore La Bua
Attention please! Project's pages are still under construction!
LSA-Bot is a new, powerful kind of Chat-bot incentred on Latent Semantic Analisys.
Using LSA it's possible to make relationships among words and vectors, permitting to realize an intelligent
chat-bot that can understand human language and answer as well.
I developed LSA-bot at university since 12-sept-2004 (first class birthdate).
LSA-Bot is written in Java and it works thanks to the LSA (Latent Semantic Analisys) theory applied to a large
amount of text documents (corpus). There are many Chat-bot systems, most of them are using the AIML language
to recognize users' questions and bots can answer to the users, but the botmaster has to think about all kind
of question a user can make to the bot.
Using LSA is possible to give something intelligence to the chat-bot, permitting to ignore, for instance,
wrong words, stop-words and all isn't needed in the meaning of a sentence.
LSA-bot uses the vectors related to every words found in the corpus to compute the 'distance' between user's
question and all possible answers, that can be simpliest sentences, small documents, or whatever the programmer
wish to do. Word's vectors are obtaines using the Singular Value Decomposition (SVD) onto the matrix built from
words' occurrences in the documents, using Matlab or other software that permit a singular value decomposition.
Obtained the vectors we need, LSA-bot uses them to create vectors for every words, and every question a user can
make. The distance among the question and verosimilar answers can be done by compute the cosine distance, rejection
over projection, tanimoto... The answer related to the vector that satisfy the minimum distance will be shown to
the user.
Another feature is that the knowledge-base of LSA-bot can be improved (learn-mode) by specify a new sentence the
bot has to learn; a new representing vector will be computed and added to others.