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Date: Tue, 1 May 2012 18:12:50 +0000 (UTC)
From: "Han Jiang (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Commented] (LUCENE-3892) Add a useful intblock postings
 format (eg, FOR, PFOR, PFORDelta, Simple9/16/64, etc.)
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    [ https://issues.apache.org/jira/browse/LUCENE-3892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13265950#comment-13265950 ] 

Han Jiang commented on LUCENE-3892:
-----------------------------------

A postings format named VSEncoding also seems promising! 

It is available here: http://integerencoding.isti.cnr.it/

And license compatible: https://github.com/maropu/integer_encoding_library/blob/master/LICENSE
                
> Add a useful intblock postings format (eg, FOR, PFOR, PFORDelta, Simple9/16/64, etc.)
> -------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3892
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3892
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>              Labels: gsoc2012, lucene-gsoc-12
>             Fix For: 4.0
>
>         Attachments: LUCENE-3892_settings.patch, LUCENE-3892_settings.patch
>
>
> On the flex branch we explored a number of possible intblock
> encodings, but for whatever reason never brought them to completion.
> There are still a number of issues opened with patches in different
> states.
> Initial results (based on prototype) were excellent (see
> http://blog.mikemccandless.com/2010/08/lucene-performance-with-pfordelta-codec.html
> ).
> I think this would make a good GSoC project.

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