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https://issues.apache.org/jira/browse/LUCENE-1410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-1410:
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Attachment: LUCENE-1410-codecs.tar.bz2
Attaching sep, intblock and pfordelta codecs, spun out of the last patch on
LUCENE-1458.
Once LUCENE-1458 is in, we should finish the pfordelta codec to make it a real
choice.
I actually think some combination of pulsing, standard, pfordelta and simple
bit packing (in order by increasing term's docFreq), within a single codec, may
be best.
Ie, rare terms (only in a doc or two) could be inlined into the the terms dict.
Slightly more common terms can use the more CPU intensive standard codec.
Common terms can use cpu-friendly-yet-still-decent-compression pfordelta.
Obsenely common terms can use bit packing for the fastest decode.
> PFOR implementation
> -------------------
>
> Key: LUCENE-1410
> URL: https://issues.apache.org/jira/browse/LUCENE-1410
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Other
> Reporter: Paul Elschot
> Priority: Minor
> Attachments: autogen.tgz, LUCENE-1410-codecs.tar.bz2,
> LUCENE-1410b.patch, LUCENE-1410c.patch, LUCENE-1410d.patch,
> LUCENE-1410e.patch, TermQueryTests.tgz, TestPFor2.java, TestPFor2.java,
> TestPFor2.java
>
> Original Estimate: 21840h
> Remaining Estimate: 21840h
>
> Implementation of Patched Frame of Reference.
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