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Posted to issues@lucene.apache.org by "Michael McCandless (Jira)" <ji...@apache.org> on 2020/11/06 15:12:00 UTC
[jira] [Commented] (LUCENE-9537) Add Indri Search Engine
Functionality to Lucene
[ https://issues.apache.org/jira/browse/LUCENE-9537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17227444#comment-17227444 ]
Michael McCandless commented on LUCENE-9537:
--------------------------------------------
Thank you for all the hard work here [~cvandenberg]! A few quick questions:
* Could you open a GitHub PR for this? It'd make inline commenting easier.
* Maybe the new {{smoothingScore}} method could be implemented in the abstract {{Scorer}} base class with default implementation returning 0?
* Please try to match Lucene's coding style, e.g. 2-spaced indents, if possible.
> Add Indri Search Engine Functionality to Lucene
> -----------------------------------------------
>
> Key: LUCENE-9537
> URL: https://issues.apache.org/jira/browse/LUCENE-9537
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/search
> Reporter: Cameron VandenBerg
> Priority: Major
> Labels: patch
> Attachments: LUCENE-9537.patch, LUCENE-INDRI.patch
>
>
> Indri ([http://lemurproject.org/indri.php]) is an academic search engine developed by The University of Massachusetts and Carnegie Mellon University. The major difference between Lucene and Indri is that Indri will give a document a "smoothing score" to a document that does not contain the search term, which has improved the search ranking accuracy in our experiments. I have created an Indri patch, which adds the search code needed to implement the Indri AND logic as well as Indri's implementation of Dirichlet Smoothing.
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