GitHub user alessandrobenedetti opened a pull request:
https://github.com/apache/lucene-solr/pull/391
[LUCENE-8343] introduced weight 0 check and positional coefficient scaling
Currently the BlendedInfixSuggester return a (long) score to rank the
suggestions.
This score is calculated as a multiplication between :
long Weight : the suggestion weight, coming from a document field, it can
be any long value ( including 1, 0,.. )
double Coefficient : 0<=x<=1, calculated based on the position match,
earlier the better
The resulting score is a long, which means that at the moment, any
weight<10 can bring inconsistencies.
Edge cases
Weight =1
Score = 1( if we have a match at the beginning of the suggestion) or 0 (
for any other match)
Weight =0
Score = 0 ( independently of the position match coefficient)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/SeaseLtd/lucene-solr LUCENE-8343
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/lucene-solr/pull/391.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #391
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commit e83e8ee1a42388606fffd10330ed1aeec9518098
Author: Alessandro Benedetti <a.benedetti@...>
Date: 2018-06-01T11:52:41Z
[LUCENE-8343] introduced weight 0 check and positional coefficient scaling
+ tests
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