On Sun, Apr 15, 2012 at 12:14 PM, Yonik Seeley
<yo...@lucidimagination.com> wrote:
> That's just because Lucene "normalizes" scores. By default, this is
> really just multiplying scores by a magic constant (that by default is
> the inverse of the sum of squared weights)
Sorry... I missed the square root. Should be "inverse of the square
root of the sum of squared weights".
See DefaultSimilarity.queryNorm:
public float queryNorm(float sumOfSquaredWeights) {
return (float)(1.0 / Math.sqrt(sumOfSquaredWeights));
}
-Yonik
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