lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Emmanuel Espina (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-5084) EliasFanoDocIdSet
Date Mon, 01 Jul 2013 22:21:20 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-5084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13697263#comment-13697263
] 

Emmanuel Espina commented on LUCENE-5084:
-----------------------------------------

Have you considered creating a PostingFormat with this? I was thinking in something like DirectPostingsFormat
but instead of using an array of ints for storing the docIds using an Elias-Fano compressed
bit stream.
Facebook is using an in-memory index for its graph search and they are compressing the posting
lists with Elias Fano (https://www.facebook.com/download/138915572976390/UnicornVLDB-final.pdf)
                
> EliasFanoDocIdSet
> -----------------
>
>                 Key: LUCENE-5084
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5084
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Paul Elschot
>            Assignee: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-5084.patch
>
>
> DocIdSet in Elias-Fano encoding

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org


Mime
View raw message