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From gtkesh <>
Subject Adding BM25 in Lucene
Date Thu, 11 Jul 2013 13:56:53 GMT
Hi everyone! I have two questions:

1. What are the cases where Lucene's default tf-idf overperforms BM25? What
are the best use cases where I should use tf-idf  or BM25?

2. Are there any user-friendly guide or something about how can I use BM25
algorithm instead of Lucene's default tf-idf? I tried to search but couldn't
find anything useful.

Thanks for replies!

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