[LUCENE-2498] add sentence boundary charfilter

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: modules/analysis
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Robert Muir
• Created: 12/Jun/10 20:39
• Updated: 28/Aug/22 12:27

Description

From the discussion of LUCENE-2167:

It would be nice to have a CharFilter? to mark sentence boundaries.
Such functionality would be useful for:

• prevent phrase queries with 0 slop from matching across sentences
• inhibiting multiword synonyms, or shingles, etc.

For sentence boundary detection we could use Jflex's support for the Unicode Sentence_Break property etc,
and the UAX#29 definition as a default grammar.

One idea is to just mark the boundaries with a user-provided String.

As a simple use-case, a user could then add this string to a stopfilter, and it would introduce a position increment.
This would inhibit phrase queries, etc.

a user could use the sentence-markers to do more advanced processing downstream.