Any ideia? Or is it a limitation of the Lucene? 2009/8/25 Fabrício Raphael <fabricio...@gmail.com>
> First, that a document is relevant to a query does not necessarily mean > that this document has to contain some query term. You can have other ways > to assert that a document is relevant to a query. > > My IR model is different of the vector model, so it can to give score not > null for documents irrelevant for the vector model. I know that Lucene > implements the vector model, but I want to use the facilities of the Lucene > because I like what the Lucene provides. > > But the Lucene to give scores only for relevant documents for the vector > model. And the my model can to give score same that this documents isn't > relevant to vector model. It depends of the configuration granularity of > execution. > > So I liked that method nextDoc() of the class that implements the > Scorer.class returned all the documents the end of the iteration to > calculate the score. > > I've got to calculate the customized score of the documents that Lucene > returns in according to the vector model. > > I hope you have understood me! > > Thanks! > > > > On Tue, Aug 25, 2009 at 1:17 PM, Shai Erera <ser...@gmail.com> wrote: > >> Can you please elaborate more on the use case? Why if a certain document >> is >> irrelevant to a certain query, you'd like to give it a score? Are you >> perhaps talking about certain documents which should always appear in >> search >> results, no matter what the query is? And instead of always showing them, >> you'd like to give them a "static score", so that they can compete w/ >> other >> docs? >> >> If that's the case, I think you can use a BooleanQuery such that the user >> query is added as a clause and then you add another clause (MUST) which is >> in fact a MatchAllDocsQuery or something like that which returns a >> customized score. It's expensive though as for each query you'll score all >> docs in the index. >> >> But I don't think that will help (at least for this use case) since every >> relevant document to the query will be added the same score as an >> 'irrelevant' document, which means the relevant docs will still win, no? >> >> Shai >> >> 2009/8/25 Fabrício Raphael <fabricio...@gmail.com> >> >> > I already know about this, but I want to give a customized score for all >> > documents in collection, independent if wache document is or isn't >> relevant >> > to the vector model. >> > >> > The similarity function is called only when the document is relevant to >> the >> > vector model. >> > >> > Do you understand me? >> > >> > Thanks! >> > >> > On Sat, Aug 22, 2009 at 2:28 AM, prashant ullegaddi < >> > prashullega...@gmail.com> wrote: >> > >> > > If you want to modify the way Lucene scores documents, I guess you >> need >> > to >> > > extend Similarity class and provide your own implementation. Take a >> look >> > > at: >> > > >> > > >> > > >> > >> http://lucene.apache.org/java/2_4_1/api/org/apache/lucene/search/DefaultSimilarity.html >> > > >> > > >> > >> http://lucene.apache.org/java/2_4_1/api/org/apache/lucene/search/Similarity.html >> > > >> > > Thanks, >> > > Prashant. >> > > >> > > 2009/8/21 Fabrício Raphael <fabricio...@gmail.com> >> > > >> > > > How to give a customize score for all documents independent of the >> > vector >> > > > model? >> > > > >> > > > I already know how to give a customize score, but I want to give >> this >> > > > customize score for all documents in the collection, regardless of >> what >> > > is >> > > > relevant to the vector model. >> > > > >> > > > How to do this? >> > > > >> > > > Now, thanks! >> > > > >> > > > -- >> > > > Fabrício Raphael >> > > > >> > > >> > >> > >> > >> > -- >> > Fabrício Raphael >> > >> > > > > -- > Fabrício Raphael > -- Fabrício Raphael
