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https://issues.apache.org/jira/browse/LUCENE-9537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17262861#comment-17262861
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Cameron VandenBerg commented on LUCENE-9537:
--------------------------------------------

Hi [~mikemccand], I am so sorry for my delay.  I did see you comments, and I 
have actually already made the changes.  Unfortunately, I seem to have messed 
up reverting my changes in some of the files in my git workspace, which 
prevented me from pushing them before break.  Now that I am back from winter 
break, I hope to have the latest changes checked in today or tomorrow.  Thanks 
so much for working with me on this!

> 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
>
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> 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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