According to the documentation for Lucene's Query Parser Syntax, the tilde operator provides a proximity search.
For instance, "Harry Hallows"~6 should match the text 'Harry Potter and the Deathly Hallows'. And while this is fine for two token phrases, I was wondering if it worked well for subexpressions: ( ( "alien" "ufo" "crash site" ) ( "Roswell" "NM" "New Mexico" ) ) ~10 Will this match "alien ship crashed in Roswell" in addition to "ufo spotted hovering over New Mexico"? I've been searching through the Lucene groups (http://www.gossamer-threads.com/lists/lucene/java-user/) for span and proximity, but have come up with nothing about such syntax or capability. Additionally, I tried entering expressions containing a tilde into Luke and then doing an explain structure. Surprisingly, I didn't see a difference between a simple case like "A B" and "A B"~10 in the explanation. Is this a problem with Luke, or did I possibly miss something trivial? Anyhow, the more important question is: Is it possible to do proximity searches on lists of terms? Thanks, -Walt Stoneburner, <[EMAIL PROTECTED]> http://www.wwco.com/~wls/blog/ --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
