I checked in a simple co-occurrence frequency based implementation for this here https://github.com/tgflynn/NLP-Challenge https://github.com/tgflynn/NLP-Challen

I checked in a simple co-occurrence frequency based implementation for this here https://github.com/tgflynn/NLP-Challenge https://github.com/tgflynn/NLP-Challenge with a short discussion on my blog: http://cogniception.com/wp/ http://cogniception.com/wp/.