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From Markus Jelsma <markus.jel...@openindex.io>
Subject RE: Synonyms in Search Results and More Accurate Matches
Date Tue, 01 Dec 2015 10:18:13 GMT
Hello - it looks like you have synonyms enabled at query time, which is fine, but also means
TF*IDF stats are different for tbrush and toothbrush, causing this order to be the way it
is. There is no solution available in Solr right now that would boost user-entered terms over
expanded synonyms but you can try this [1] plugin. You can solve the second problem by using
phrase boosting in dismax, see the pf parameter.

[1]: https://github.com/healthonnet/hon-lucene-synonyms

M.

-----Original message-----
> From:Brian Narsi <bnarsi70@gmail.com>
> Sent: Tuesday 1st December 2015 2:36
> To: solr-user@lucene.apache.org
> Subject: Synonyms in Search Results and More Accurate Matches
> 
> I am using edismax with mm=1 and qs=6
> 
> I have a field type with synonyms attached to it.
> A sample synonym is:
> 
> toothbrush tbrush
> 
> For the following data:
> 
> 1) Phillips toothbrush
> 
> 2) Oral-B tbrush
> 
> 3) Phillips Sonicare toothbrush
> 
> 
> If a user searches for
> 
> q = tbrush
> 
> I am getting
> 
> 1), 3), 2)
> 
> i.e. the one with exact synonym match is last
> 
> If a user searches for
> 
> q = toothbrush
> 
> Result is
> 
> 2), 1), 3)
> 
> i.e. one with exact match is not first
> 
> 
> So
> 
> 1) I need the exact matches to be first and then the other matches (because
> of being a synonym)
> 
> 2) If a user searches for Phillips Sonicare toothbrush; I need the results
> in the following order 3), 1), 2) i.e. most relevant results should be
> higher
> 
> What changes do I need to make in order to accomplish this?
> 
> Thanks in advance,
> 

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