[jira] [Assigned] (LUCENE-7466) add axiomatic similarity

["Tommaso Teofili (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-7466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tommaso Teofili reassigned LUCENE-7466:
---------------------------------------

    Assignee: Tommaso Teofili

> 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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