----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de
> -----Original Message----- > From: Paul Taylor [mailto:paul_t...@fastmail.fm] > Sent: Saturday, January 28, 2012 11:01 AM > Cc: java-user@lucene.apache.org > Subject: Re: Does Fuzzy Search scores the same as Exact Match > > On 28/01/2012 09:36, Uwe Schindler wrote: > > Hi, > > > >> -----Original Message----- > >> From: Paul Taylor [mailto:paul_t...@fastmail.fm] > >> Sent: Saturday, January 28, 2012 10:33 AM > >> To: 'java-user@lucene.apache.org' > >> Subject: Does Fuzzy Search scores the same as Exact Match > >> > >> All things being equal does a fuzzy match give the same score as an > >> exact match. > >> i.e if I do a search for farmin and it matches two docs one on term > > farmin, the > >> other on term farming, will it score farming higher or score both the > >> same > > ? > > > > YES, depends on the Fuzzy configuration (rewrite method,...), but the > > default does so! > > > > Uwe > > > > > So how do I change it, seems like a funny default to have. Maybe I was not clear, it should score "farming" higher than "farmin" by default, but the default rewrite mode also takes TF/IDF into account (in addition). You can change that by a different rewrite method: The default is: http://goo.gl/JhHOA (which combines the standard vector model with additionally boosting exact matches - we have that for backwards compatibility only, its not what most users expect) The better one is: http://goo.gl/0eJ47, which does not take TF/IDF into account and only boosts by levensthein distance. You can disable fuzzy boosting altogether: Additionally http://goo.gl/VWlkW provides two other scoring models (TF/IDF only, no boosting - or constant score at all) Uwe --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
