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From Yonik Seeley <>
Subject Re: Scoring formula
Date Sat, 05 Nov 2005 22:49:40 GMT
Lucene 1.2 is before my time, but check if the functions are
implemented the same as the current version (they probably are).

Scores are not naturally <= 1, but for most search methods (including
all that return Hits) they are normalized to be between 1 and 0 if the
highest score is greater than 1.

Now hiring --

On 11/5/05, Karl Koch <> wrote:
> Yes, the Similarity class existed in version 1.2, but no description is
> included in its JavaDoc. After somebody could point me to the formular I
> would also like to know if the formula ensures the score is always between
> 0.0 and 1.0 (without any boosting)... Is this the case?
> Karl

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