Do you know about any papers that discuss this? Karl
-------- Original-Nachricht -------- Datum: Wed, 13 Dec 2006 10:31:41 -0500 Von: "Yonik Seeley" <[EMAIL PROTECTED]> An: java-user@lucene.apache.org Betreff: Re: Lucene scoring: coord_q_d factor > On 12/13/06, Karl Koch <[EMAIL PROTECTED]> wrote: > > To me, it seems that coordination level matching could be used if I > don't want to use TFxIDF but not together with it. In this context, I wonder > what benefit the "coordination level matching" has in combination with > TFxIDF? > > Well, if I search for blue kangaroo, the coord is nice to get > documents with "blue" and "kangaroo" to score higher than documents > with just one term. And among documents with just one term, the idf > factor will make "kangaroo" rank above "blue", which is generally > desired. > > I have seen complaints about the default similarity though, where the > coord factor does not give enough of a boost in relation to the idf of > some of the individual terms. > > > -Yonik > http://incubator.apache.org/solr Solr, the open-source Lucene search > server > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
