one more question, for phrase or multiphrase query. why not using the maximum idf of individual term instead of summing up the idfs of each term?
On Mon, Oct 31, 2011 at 2:30 PM, Robert Muir <[email protected]> wrote: > yes: override that method idfExplain(java.util.Collection, > org.apache.lucene.search.Searcher) > > On Mon, Oct 31, 2011 at 5:24 PM, David Ryan <[email protected]> wrote: > > Thanks! Is there any way to extend the Similarity class to overwrite the > > behavior (e.g., using the max idf instead of the sum of each term idfs)? > > > > > > On Thu, Oct 27, 2011 at 5:41 AM, Robert Muir <[email protected]> wrote: > > > >> On Thu, Oct 20, 2011 at 3:11 PM, David Ryan <[email protected]> wrote: > >> > >> > > >> > However, in some case, when I search o'reilly , I see > >> > > >> > * 44.0865 = idf(title: o''reilli=4 o=1488 reilli=14 oreilli=4)* > >> > > >> > In this cae, How is IDF calculated? > >> > > >> > >> thats a phrase or multiphrase query. > >> > >> in this case it sums up the idf of each term: > >> > >> > http://lucene.apache.org/java/3_4_0/api/all/org/apache/lucene/search/Similarity.html#idfExplain(java.util.Collection > >> , > >> org.apache.lucene.search.Searcher) > >> > >> -- > >> lucidimagination.com > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [email protected] > >> For additional commands, e-mail: [email protected] > >> > >> > > > > > > -- > lucidimagination.com > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
