[
https://issues.apache.org/jira/browse/LUCENE-8286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16462466#comment-16462466
]
David Smiley commented on LUCENE-8286:
--------------------------------------
The "span" width _could_ be used for passage relevancy, and perhaps ought to be
– sure. I just meant to convey that today the UH doesn't have or use this info.
BTW I did a quick hack integration last night of Weight.getMatches into the UH
and ran some tests. I had no issue with term vectors. The fieldMatcher (aka
requireFieldMatch option) will require some work. And if the query references
non-highlighted fields in a way that will constraint the results (i.e. MUST
otherfield:foo), for the Analysis offset strategy, we'll need to combine an
aggregate index view of analysis with the underlying real index for other
fields because the MemoryIndex alone only has one field – the field being
highlighted.
> UnifiedHighlighter should support the new Weight.matches API for better match
> accuracy
> --------------------------------------------------------------------------------------
>
> Key: LUCENE-8286
> URL: https://issues.apache.org/jira/browse/LUCENE-8286
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/highlighter
> Reporter: David Smiley
> Priority: Major
>
> The new Weight.matches() API should allow the UnifiedHighlighter to more
> accurately highlight some BooleanQuery patterns correctly -- see LUCENE-7903.
> In addition, this API should make the job of highlighting easier, reducing
> the LOC and related complexities, especially the UH's PhraseHelper. Note:
> reducing/removing PhraseHelper is not a near-term goal since Weight.matches
> is experimental and incomplete, and perhaps we'll discover some gaps in
> flexibility/functionality.
> This issue should introduce a new UnifiedHighlighter.HighlightFlag enum
> option for this method of highlighting. Perhaps call it {{WEIGHT_MATCHES}}?
> Longer term it could go away and it'll be implied if you specify enum values
> for PHRASES & MULTI_TERM_QUERY?
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: dev-h...@lucene.apache.org
