If you read the javadocs and source for DefaultSimilarity you'll know as much about it as I do, and see what the default is. To customize it, write your own subclass as I said before.
-- Ian. On Tue, Feb 2, 2010 at 7:56 PM, Phan The Dai <thienthanhom...@gmail.com> wrote: > Dear Lan Lea, > Thanks much for your reply. > Please tell me more details of coord. > what is its default? > how to customize it, why we have to define. > > Thank you much for understading my question. > > On Sat, Jan 30, 2010 at 2:46 AM, Ian Lea <ian....@gmail.com> wrote: > >> I presume that quote is from the javadocs for Similarity. >> >> You can write your own Similarity class that extends DefaultSimilarity >> and provides an implementation of public float coord(int overlap, int >> maxOverlap) that does what you want, maybe by scaling up the value >> returned, if I've understood the description properly. >> >> Tell lucene to use your class by calling >> Similarity.setDefault(Similarity similarity). >> >> Warning: in my limited experience of trying to tweak lucene's scoring >> I almost always make things worse rather than better. YMMV. Good >> luck. >> >> >> -- >> Ian. >> >> >> On Fri, Jan 29, 2010 at 4:27 PM, Phan The Dai <thienthanhom...@gmail.com> >> wrote: >> > "When searching with a query as a multi term query, users can further >> reward >> > documents matching more query terms through a coordination factor: >> > *coord-factor(q,d) >> > " >> > >> > *How we configure this factor? >> > I am needing if documents matching more term queries then their score are >> > higher. >> > >> > Please show me more details. Thanks 1 >> > >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> >> > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
