I came across this term called 'Explicit Semantic Analysis ' which uses Wikipedia as a reference and finds the similarity in documents and categorizes them into classes (correct me if i am wrong).
The link i came across is here
I wanted to learn more about it. Please help me out with it !
This explicit semantic analysis works on similar lines as semantic similarity . I got hold of this link which provides a clear example of ESA
来源：https://stackoverflow.com/questions/8707624/explicit-semantic-analysis