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From "Andrzej Bialecki (JIRA)" <>
Subject [jira] Commented: (LUCENE-2959) [GSoC] Implementing State of the Art Ranking for Lucene
Date Thu, 10 Mar 2011 21:42:59 GMT


Andrzej Bialecki  commented on LUCENE-2959:

You are probably familiar with this paper and the code... just in case I'm adding a reference

> [GSoC] Implementing State of the Art Ranking for Lucene
> -------------------------------------------------------
>                 Key: LUCENE-2959
>                 URL:
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Examples, Javadocs, Query/Scoring
>            Reporter: David Mark Nemeskey
>              Labels: gsoc2011, lucene-gsoc-11
>         Attachments: implementation_plan.pdf, proposal.pdf
> Lucene employs the Vector Space Model (VSM) to rank documents, which compares
> unfavorably to state of the art algorithms, such as BM25. Moreover, the architecture
> tailored specically to VSM, which makes the addition of new ranking functions a non-
> trivial task.
> This project aims to bring state of the art ranking methods to Lucene and to implement
> query architecture with pluggable ranking functions.

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