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From "Alessandro Benedetti (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-7498) More Like This to Use BM25
Date Thu, 20 Apr 2017 13:09:04 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-7498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15976654#comment-15976654
] 

Alessandro Benedetti commented on LUCENE-7498:
----------------------------------------------

Hi [~rcmuir], thank you for your feedback, I agree on your points, let's identify the next
steps :

1) I will split up the patch 
- MLT internal broken up in more maintainable classes, as much as back compatible as possible
( scoring refactor allow to introduce new scorers in the future with ease)
- introduction of BM25 term scorer ( possibly involving BM25 to become public or partial duplicated
code) -> this will remain in this JIRA
- Changes of Solr cloud classes, classification module, etc (maybe because of api changes)

2) generate related JIRAs
3) proceed with review in order to reduce complexity ( first review will be big, but much
smaller and cohesive than this one 

I will keep you updated,




> More Like This to Use BM25
> --------------------------
>
>                 Key: LUCENE-7498
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7498
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/other
>            Reporter: Alessandro Benedetti
>            Assignee: Tommaso Teofili
>
> BM25 is now the default similarity, but the more like this is still using the old TF/IDF
.
>  
> This issue is to move to BM25 and refactor the MLT to be more organised, extensible and
maintainable.
> Few extensions will follow later, but the focus of this issue will be :
>  - BM25
> - code refactor + tests



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