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Date: Mon, 11 Jun 2012 21:33:43 +0000 (UTC)
From: "Adrien Grand (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Commented] (LUCENE-4120) FST should use packed integer
 arrays
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    [ https://issues.apache.org/jira/browse/LUCENE-4120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13293107#comment-13293107 ] 

Adrien Grand commented on LUCENE-4120:
--------------------------------------

bq. This presentation has some details: http://ciaa-fsmnlp-2011.univ-tours.fr/ciaa/upload/files/Weiss-Daciuk.pdf

Thanks for the link, Dawid! I am considering adding this link to the {{pack}} docs.
                
> FST should use packed integer arrays
> ------------------------------------
>
>                 Key: LUCENE-4120
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4120
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/FSTs
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: LUCENE-4120.patch
>
>
> There are some places where an int[] could be advantageously replaced with a packed integer array.
> I am thinking (at least) of:
>  * FST.nodeAddress (GrowableWriter)
>  * FST.inCounts (GrowableWriter)
>  * FST.nodeRefToAddress (read-only Reader)
> The serialization/deserialization methods should be modified too in order to take advantage of PackedInts.get{Reader,Writer}.

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