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https://issues.apache.org/jira/browse/LUCENE-4312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16879757#comment-16879757
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Mike Sokolov commented on LUCENE-4312:
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Yes, we're compromising precision today when we apply index-time synonyms (and
other analysis that produces token graphs). I think this would be an awesome
addition If the cost of indexing position length in postings is not too great,
and I think you are right -- it will usually be 1, sometimes 0 and rarely > 1,
so we should be able to encode compactly, and decode efficiently.
> Index format to store position length per position
> --------------------------------------------------
>
> Key: LUCENE-4312
> URL: https://issues.apache.org/jira/browse/LUCENE-4312
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/codecs
> Affects Versions: 6.0
> Reporter: Gang Luo
> Priority: Minor
> Labels: Suggestion
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> Mike Mccandless said:TokenStreams are actually graphs.
> Indexer ignores PositionLengthAttribute.Need change the index format (and
> Codec APIs) to store an additional int position length per position.
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