Query q = NumericRangeQuery.newIntRange(...) or Query q = new TermRangeQuery(....) (depending on your field type)
----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: Sowmya V.B. [mailto:vbsow...@gmail.com] > Sent: Wednesday, June 15, 2011 11:22 AM > To: java-user@lucene.apache.org > Subject: Re: Boosting a document at query time, based on a field value/range > > Hi > > I am not getting the replies to my inbox ...hence the delay in responding. > > >>I think you misunderstand Eric's answer, as his suggestion does > >>exactly > what you ask for. Have you tried the "OR **field**:[20 TO 30]^10" method? > > Well, my question is partly answered with this clarification. But, I am still > wondering how to do that programmatically. > the (20-30) range is not a fixed range. Its chosen by the user. It can as > well be > (12-34) too. I am not able to figure out if there is any function in the > searcher > classs, which will enable me give these specifications ...something like... a > setboost(), which exists during index time. > > S. > > On Fri, Jun 10, 2011 at 10:38 AM, Sowmya V.B. <vbsow...@gmail.com> > wrote: > > > Hi Erick > > > > Thanks for the response. > > > > I would want the documents with values within #20-30# be ranked above > > the documents with some other values. > > Well, since there might be a case where there are no documents in that > > range, I would also prefer to have other documents listed too, > > somewhere lower down the rankings. > > > > Also, I don't want to do a simple sort on the results what lucene > > gives, with its own ranking function. > > I am looking for a possibility of boosting a given document at > > query-time, based on the values of a particular field : instead of > > plainly sorting the normal lucene results based on this field. > > Is that possible, without going in to the scoring function? > > > > Sowmya. > > > > ************* > > I take it from this that you want documents with values #outside# > > 20-30 to still be found? In that case you can do something like add a > > clause > > like: > > > > OR *field*:[20 TO 30]^10 > > > > or similar. > > > > Best > > Erick > > > > On Thu, Jun 9, 2011 at 5:10 PM, Sowmya V.B. <vbsow...@gmail.com> > wrote: > > > >> Hi All > >> > >> I have joined the group only today..and began working with lucene > >> only recently. > >> > >> My problem: I want to boost the ranking of certain documents, based > >> on the values of certain fields. > >> > >> For example, if the field has a range of values from 0 to 100 and > >> the user chooses something like 20 to 30, as an option, along with > >> the query; I want the documents which satisfy that condition (The > >> field value being between 20 and 30) to get a boost during ranking. > >> > >> Is there a way to do that in Lucene? I could not find an > >> understandable explanation in the past mails about this. Hence, starting a > fresh thread. > >> > >> Sowmya. > >> > >> -- > >> Sowmya V.B. > >> ---------------------------------------------------- > >> Losing optimism is blasphemy! > >> http://vbsowmya.wordpress.com > >> ---------------------------------------------------- > >> > > > > > > > > -- > > Sowmya V.B. > > ---------------------------------------------------- > > Losing optimism is blasphemy! > > http://vbsowmya.wordpress.com > > ---------------------------------------------------- > > > > > > -- > Sowmya V.B. > ---------------------------------------------------- > Losing optimism is blasphemy! > http://vbsowmya.wordpress.com > ---------------------------------------------------- --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
