Search ranking/relevance algorithms

Question

When developing a database of articles in a Knowledge Base (for example) - what are the best ways to sort and display the most relevant answers to a users\' question?

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Answer 1

I think the angle here is not the retrieval itself... its about scoring the relevence of the information retrieved (A more reactive and passive approach) which can be later used to improve the search engine.

I guess you can try -

1. knn on tfidf for retrieving information

2. Hand tagging these retrieved info a relevency score

3. Then regress that score to predict the score for an unknwon search result and sort it.

Just a thought...

The third point is actually based on Rocchio algorithm. You can see it here