AI Framework for managing automatic responses

What is the best technique or framework to implement one robot in one website, something like IKEA Site:

http://193.108.42.开发者_StackOverflow79/ikea-us/cgi-bin/ikea-us.cgi

But I don't care about the frontend what I really need to know is what framework or technique to manage the Artificial Inteligence.

Best Regards,

Pedro

While it is possible that the only technique they are using is Keyword Spotting it is more likely that they are also using Naive Bayesian Classification.

There are some some client-side classifiers written in javascript such as Brain, eliminating the need for server-side processing.

Brain: http://harthur.github.com/brain/#bayesian

A more comprehensive solution may include Classifier4J or OpenNLP, either of which could be utilized in a Java Applet or on a server if need be.

OpenNLP: http://incubator.apache.org/opennlp/