I think I finally cracked this one: https://issues.apache.org/jira/browse/LUCENE-1896
The usefulness is as it says - to allow the scores from queries to be *more* comparable. The value of *more* is less clear. Not sure its so valuable myself. - mark --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org