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Posted to solr-user@lucene.apache.org by "Hodder, Rick" <RH...@navg.com> on 2018/02/26 22:39:31 UTC
SOLR Similarity Difference
I'm converting SOLR 4.10.2 to SOLR 7.1
I have the following three strings in both SOLR cores
Action Technical Temporaries t/a CTR Corporation
Action Technical Temporaries
Action Technical Temporar
If I search
IDX_CompanyName: (Action AND Technical AND Temporaries AND t/a AND CTR AND Corporation)
Under 4.10.2 I see all three in the results
Under 7.1, with the default BF25 similarity. I only see the first result
Someone on the list suggested that make 7.1 to go back to the similarity factory used in 4.10.2 that I add the following to the schema.xml.
<similarity class="org.apache.solr.search.similarities.ClassicSimilarityFactory"></similarity>
That brings all three results.
But my boss would prefer that we don't use the older similarity factory.
Is there some setting other than similarity factory that will make 7.1 include these documents without changing the query?
Thanks,
Rick Hodder
Information Technology
Navigators Management Company, Inc.
83 Wooster Heights Road, 2nd Floor
Danbury, CT 06810
(475) 329-6251
[Forbes_Best Places Logo2016]
Re: SOLR Similarity Difference
Posted by Rick Leir <rl...@leirtech.com>.
Rick
Did you experiment in the SolrAdmin analysis page? It would possibly tell you whether your chain is doing what you expect. Then you need to consider that boolean logic is not strictly boolean in Solr. There is a Lucidworks blog which explains this nicely; every now and then someone posts the link here.
Cheers -- Rick
On February 26, 2018 5:39:31 PM EST, "Hodder, Rick" <RH...@navg.com> wrote:
>I'm converting SOLR 4.10.2 to SOLR 7.1
>
>I have the following three strings in both SOLR cores
>
>Action Technical Temporaries t/a CTR Corporation
>Action Technical Temporaries
>Action Technical Temporar
>
>If I search
>
>IDX_CompanyName: (Action AND Technical AND Temporaries AND t/a AND CTR
>AND Corporation)
>
>Under 4.10.2 I see all three in the results
>
>Under 7.1, with the default BF25 similarity. I only see the first
>result
>
>Someone on the list suggested that make 7.1 to go back to the
>similarity factory used in 4.10.2 that I add the following to the
>schema.xml.
>
><similarity
>class="org.apache.solr.search.similarities.ClassicSimilarityFactory"></similarity>
>
>That brings all three results.
>
>But my boss would prefer that we don't use the older similarity
>factory.
>
>Is there some setting other than similarity factory that will make 7.1
>include these documents without changing the query?
>
>Thanks,
>
>Rick Hodder
>Information Technology
>Navigators Management Company, Inc.
>83 Wooster Heights Road, 2nd Floor
>Danbury, CT 06810
>(475) 329-6251
>
>[Forbes_Best Places Logo2016]
--
Sorry for being brief. Alternate email is rickleir at yahoo dot com