I'd *strongly* recommend getting a copy of Luke, opening your index with it and playing around. The "explain" tab will show you a *lot* about how scoring works......
Erick On Tue, Jan 12, 2010 at 8:16 AM, Paul Taylor <paul_t...@fastmail.fm> wrote: > Benjamin Heilbrunn wrote: > >> This is because matches in short fields (few terms) als typically more >> pregnant, than matches in long fields (much terms). >> >> Imagine the case with two fields named "title" and "content" >> representing the title and the content of books. >> If you match three search terms in a five terms title this is a better >> hit than if you match those three search terms in the content of the >> book. >> >> The length normalization factor is calculated by your Similarity >> implementation in the method >> public float lengthNorm(String fieldName, int numTokens) >> >> Does that help you? >> >> >> > > Yes, thanks it does I was just getting it, is it base purely on matching a > field with less terms rather than the percentage of terms in a field > matched. > i.e If you match three search terms in a five terms field would this be > better then if you match those four search terms in a six term field. > > > do you know the answer to my second post. > i.e what does default lengthNorm return for a single term field, (compared > to if have no NO NORM whereby assume value 1.0) > > > Paul > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
