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From Ian Lea <>
Subject Re: range of scores : queryNorm()
Date Mon, 22 Feb 2010 15:21:33 GMT
> I have observed that even if we change boosting
> drastically, scores are being normalized at the end because of
> queryNorm value. Is there anything ( regarding to the queryNorm) that
> we can rely on ?


> like score will always be under 10


> or some fixed  value ?

I think not.

> The main objective is to provide scores in a fixed range to
> the partner. So have you been experienced anything like this? Is it
> possible to do so ?.

You could normalize the scores yourself, probably most easily in a
pass through them once the search has completed.  Beware of comparing
scores across searches and indexes.

> Have you been experienced any strange situation like for a
> particular query, result scores were really high compared to routine?

Not me, but I rarely look at scores directly.  I just care that the
right docs get found.


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