Can you help me? How to give customized scores for all documents? 2009/8/25 Fabrício Raphael <fabricio...@gmail.com>
> I am continuing a work about wavelets in IR. In the bellow article you will > to find a example. > > > http://www.ieeexplore.ieee.org/search/srchabstract.jsp?arnumber=4740460&isnumber=4740405&punumber=4740404&k2dockey=4740...@ieeecnfs&query=%28%28using+wavelets+to+classify+documents%29%3Cin%3Eti+%29&pos=0&access=no > > Att, > > > On Tue, Aug 25, 2009 at 2:57 PM, Simon Willnauer < > simon.willna...@googlemail.com> wrote: > >> Hi Fabricio, >> >> I will try to recap what you are trying to say... >> >> you IR model does score documents that would not be returned by a >> particular query. So you have some other indicator that make a >> document relevant?! If it is not a term could you give use an example? >> How would you decide if a doc is relevant or what would make it >> "scorable"? >> >> I guess an example would help :) >> >> simon >> >> 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 >> > >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> >> > > > -- > Fabrício Raphael > -- Fabrício Raphael
