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From "Mike Klaas" <mike.kl...@gmail.com>
Subject Re: Changing encoding norms and boosting...
Date Thu, 29 Mar 2007 22:47:04 GMT
On 3/29/07, escher2k <escher2k@yahoo.com> wrote:
>
> This is related to an earlier posting
> (http://www.nabble.com/Document-boost-not-as-expected...-tf3476653.html).
> I am trying to determine a ranking for users that is between 1 and 1.5.
> Because of the way the encoding
> norm is stored, if index time boosting is done, everyone gets a score of 1,
> 1.25 or 1.5. Is there any way
> to get around this so that all the values can be retrieved as is (e.g. 1.22,
> 1.35 etc).

One option is to override the norm encoding in Similarity, and
re-index.  You'd still be limited to 256 values.

You could also store doc boosts that span a wider dynamic variance (1
to 15 rather than 1 to 1.5, say), then compensate by applying a
query-time boost of 0.1.

-Mike

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