Need Help in Apache SOLR scores logic

[Karthik Reddy <pk...@gmail.com>]

Hello Team,

How are you? This is Karthik Reddy and I am working as a Software
Developer. I have one question regarding SOLR scores. One of the projects,
which I am working on we are using Lucene Apache SOLR.
We were using SOLR 5.4.1 initially and then migrated to SOLR 8.4.1. After
migration, I do see the score which is returned by SOLR is got changed in
8.2.0. I would like to use the same score logic as SOLR 5.4.1. Could you
please help what configuration should I change in SOLR 8.4.1 to get the
same scores as version 5.4.1. Thanks in advance.



Regards
Karthik Reddy

Re: Need Help in Apache SOLR scores logic

[Jon Kjær Amundsen <ja...@udbudsvagten.dk>]

Relevance scoring has indeed changed since Solr 6 from the tf/idf vector
model to Okapi BM25.
You will need to set the similarity to ClassicSimilarityFactory in the
schema.

Consult the reference guide[1] how to do it.

[1]
https://lucene.apache.org/solr/guide/8_4/other-schema-elements.html#similarity

Venlig hilsen/Best regards

*Jon Kjær Amundsen*
Developer


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Den tir. 25. feb. 2020 kl. 18.24 skrev Karthik Reddy <pk...@gmail.com>:

> Hello Team,
>
> How are you? This is Karthik Reddy and I am working as a Software
> Developer. I have one question regarding SOLR scores. One of the projects,
> which I am working on we are using Lucene Apache SOLR.
> We were using SOLR 5.4.1 initially and then migrated to SOLR 8.4.1. After
> migration, I do see the score which is returned by SOLR is got changed in
> 8.2.0. I would like to use the same score logic as SOLR 5.4.1. Could you
> please help what configuration should I change in SOLR 8.4.1 to get the
> same scores as version 5.4.1. Thanks in advance.
>
>
>
> Regards
> Karthik Reddy
>