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Similarity

Subject: Similarity
From: john atsh
Date: Mon, 23 Mar 2009 05:45:45 -0700 PDT
I want to change slightly the similarity function, in the following way:

Use same cosine similarity as defined by DefaultSimilarity, but multiply the
result score by f, where f is defined as following
f = (# of terms in query that appear also in document) / (# of terms in
document)

(this boosts documents that contain RELATIVELY more query terms)

What's the best way to do it, and how?

Thanks
John
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