Hi Fredrik, Are you looking for org.apache.lucene.search.DefaultSimilarity ?
Otis --- Fredrik Andersson <[EMAIL PROTECTED]> wrote: > Hi folks. > > I read a transcript from last months digest of this list, in a post > by > Rajesh Munavalli, that Lucene uses a VSM retrieval method. In my > previous > work with VSM, it has included matching a query vector towards the > documents > in the term-document space. I have dissected and customized a lot of > classes > in the Lucene indexing and searching classes, but I have yet to > discover > where the actual dot product of the query vector and the document > vectors is > performed, if Lucene uses this method for information retrieval. > Using this > method involves a certain angle which you consider as "close", which > is a > parameter that Lucene would benefit from exposing in its API. This I > have > not seen any trails of, either. To keep a long story short, a lot of > the > stuff that I usually associate with VSM and LSI information retrieval > is > missing or cleverly hidden. > > If someone could shed some light on this issue, I would be very > thankful. > It's probably just that we have different notions of the VSM model, > but I'd > like to get this straightened out. > > Greetings, > Fredrik >
