I've seen this done (encouraged against it, but didn't win). It works. Except, sometimes things change in the index, and the scores change subtly. We get complaints that documents that previously were above the threshold now aren't, and visa-versa. I try to explain that the score has no meaning between two search requests, but unfortunately, there's *enough* similarity between requests to make it work, *sometimes*. But when it doesn't work, people get baffled, and don't accept the truth as an answer (you can't use scores to compare separate sets of search results).
Upayavira On Tue, Feb 3, 2015, at 08:01 PM, Ali Nazemian wrote: > Dear Markus, > Hi, > Thank you very much for your response. I did check the reason why it is > not > recommended to filter by score in search query. But I think it is > reasonable to filter by score in case of finding similar documents. I > know > in both of them (simple search query and mlt query) vsm of tf-idf > similarity is used to calculate the score of documents, but suppose you > indexed news as document in solr and you want to find all enough similar > news for the specific one. In this case I think it is reasonable to > filter > similar documents by score threshold. Please correct me if I am wrong. > Thank you very much. > Regards. > On Feb 3, 2015 7:00 PM, "Markus Jelsma" <markus.jel...@openindex.io> > wrote: > > > Hi - sure you can, using the frange parser as a filter: > > > > > > https://cwiki.apache.org/confluence/display/solr/Other+Parsers#OtherParsers-FunctionRangeQueryParser > > > > http://lucene.apache.org/solr/4_10_3/solr-core/org/apache/solr/search/FunctionRangeQParserPlugin.html > > > > But this is very much not recommended, at all, so don't do it: > > > > https://wiki.apache.org/lucene-java/LuceneFAQ#Can_I_filter_by_score.3F > > > > -----Original message----- > > > From:Ali Nazemian <alinazem...@gmail.com> > > > Sent: Tuesday 3rd February 2015 16:22 > > > To: solr-user@lucene.apache.org > > > Subject: MoreLikeThis filter by score threshold > > > > > > Hi, > > > I was wondering how can I limit the result of MoreLikeThis query by the > > > score value instead of filtering them by document count? > > > Thank you very much. > > > > > > -- > > > A.Nazemian > > > > >
