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Posted to dev@lucene.apache.org by "DM Smith (Commented) (JIRA)" <ji...@apache.org> on 2012/03/06 15:50:59 UTC
[jira] [Commented] (LUCENE-1799) Unicode compression
[ https://issues.apache.org/jira/browse/LUCENE-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13223294#comment-13223294 ]
DM Smith commented on LUCENE-1799:
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Would someone be able to champion this. It appears ready to go. for the last 1.5 years. Looks like it is merely a permission problem. I'd like to see it get in the 3.x series.
> Unicode compression
> -------------------
>
> Key: LUCENE-1799
> URL: https://issues.apache.org/jira/browse/LUCENE-1799
> Project: Lucene - Java
> Issue Type: New Feature
> Components: core/store
> Affects Versions: 2.4.1
> Reporter: DM Smith
> Priority: Minor
> Attachments: Benchmark.java, Benchmark.java, Benchmark.java, LUCENE-1779.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799.patch, LUCENE-1799_big.patch
>
>
> In lucene-1793, there is the off-topic suggestion to provide compression of Unicode data. The motivation was a custom encoding in a Russian analyzer. The original supposition was that it provided a more compact index.
> This led to the comment that a different or compressed encoding would be a generally useful feature.
> BOCU-1 was suggested as a possibility. This is a patented algorithm by IBM with an implementation in ICU. If Lucene provide it's own implementation a freely avIlable, royalty-free license would need to be obtained.
> SCSU is another Unicode compression algorithm that could be used.
> An advantage of these methods is that they work on the whole of Unicode. If that is not needed an encoding such as iso8859-1 (or whatever covers the input) could be used.
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