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Posted to java-user@lucene.apache.org by Andrew Boyd <an...@mindspring.com> on 2005/06/02 11:38:39 UTC

calculate wi = tfi * IDFi for each document.

If I have search results how can I calculate, using lucene's API,  wi = tfi * IDFi for each document.

wi    = term weight
tfi    = term frequency in a document
IDFi = inverse document frequency = log(D/dfi)
dfi   = document frequency or number of documents containing term i
D    = number of documents in my search result

Thanks,

Andrew

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