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From "Peilin Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-7466) add axiomatic similarity
Date Wed, 16 Nov 2016 11:36:58 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-7466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15670225#comment-15670225
] 

Peilin Yang commented on LUCENE-7466:
-------------------------------------

Hi [~teofili], thanks for your feedback.
For the `NDV`, `FDV` and `DDV` you've mentioned, could you please directly annotate them in
the PR?
It is more clear that what line or which part of the PR you refer to.

> add axiomatic similarity 
> -------------------------
>
>                 Key: LUCENE-7466
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7466
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/search
>    Affects Versions: master (7.0)
>            Reporter: Peilin Yang
>            Assignee: Tommaso Teofili
>              Labels: patch
>
> Add axiomatic similarity approaches to the similarity family.
> More details can be found at http://dl.acm.org/citation.cfm?id=1076116 and https://www.eecis.udel.edu/~hfang/pubs/sigir05-axiom.pdf
> There are in total six similarity models. All of them are based on BM25, Pivoted Document
Length Normalization or Language Model with Dirichlet prior. 
> We think it is worthy to add the models as part of Lucene.



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