This folllowing query: http://localhost:8080/solr/select?q=malaysian airline crash&rq={!rerank reRankQuery=$rqq reRankDocs=1000}&rqq=*:*&sort=publish_date desc&fl=headline,publish_date,score
Is doing the following: The main query is sorted by publish_date. Then the results are reranked by *:*, which in theory would have no effect at all. The reRankQuery only uses the reRankQuery to re-rank the results. The sort param will always apply to the main query. Joel Bernstein Search Engineer at Heliosearch On Sat, Sep 6, 2014 at 2:33 PM, Ravi Solr <ravis...@gmail.com> wrote: > Erick, > Your idea about reversing Joel's suggestion seems to give the best > results of all the options I tried...but I cant seem to understand why. I > thought the query shown below should give irrelevant results as sorting by > date would throw relevancy off...but somehow its getting relevant results > with fair enough reverse chronology. It is as if the sort is applied after > the docs are collected and reranked (which is what I wanted). One more > thing that baffled me was, if I change reRankDocs from 1000 to100 the > results become irrelevant, which doesnt make sense. > > So can you kindly explain whats going on in the following query. > > http://localhost:8080/solr/select?q=malaysian airline crash&rq={!rerank > reRankQuery=$rqq reRankDocs=1000}&rqq=*:*&sort=publish_date > desc&fl=headline,publish_date,score > > I love the solr community, so much to learn from so many knowledgeable > people. > > Thanks > > Ravi Kiran Bhaskar > > > > On Fri, Sep 5, 2014 at 1:23 PM, Erick Erickson <erickerick...@gmail.com> > wrote: > > > OK, why can't you switch the clauses from Joel's suggestion? > > > > Something like: > > q=Malaysia plane crash&rq={!rerank reRankDocs=1000 > > reRankQuery=$myquery}&myquery=*:*&sort=date+desc > > > > (haven't tried this yet, but you get the idea....). > > > > Best, > > Erick > > > > On Fri, Sep 5, 2014 at 9:33 AM, Markus Jelsma > > <markus.jel...@openindex.io> wrote: > > > Hi - You can already achieve this by boosting on the document's > recency. > > The result set won't be exactly ordered by date but you will get the most > > relevant and recent documents on top. > > > > > > Markus > > > > > > -----Original message----- > > >> From:Ravi Solr <ravis...@gmail.com <mailto:ravis...@gmail.com> > > > >> Sent: Friday 5th September 2014 18:06 > > >> To: solr-user@lucene.apache.org <mailto:solr-user@lucene.apache.org> > > >> Subject: Re: Query ReRanking question > > >> > > >> Thank you very much for responding. I want to do exactly the opposite > of > > >> what you said. I want to sort the relevant docs in reverse chronology. > > If > > >> you sort by date before hand then the relevancy is lost. So I want to > > get > > >> Top N relevant results and then rerank those Top N to achieve relevant > > >> reverse chronological results. > > >> > > >> If you ask Why would I want to do that ?? > > >> > > >> Lets take a example about Malaysian airline crash. several articles > > might > > >> have been published over a period of time. When I search for - > malaysia > > >> airline crash blackbox - I would want to see "relevant" results but > > would > > >> also like to see the the recent developments on the top i.e. > > effectively a > > >> reverse chronological order within the relevant results, like telling > a > > >> story over a period of time > > >> > > >> Hope i am clear. Thanks for your help. > > >> > > >> Thanks > > >> > > >> Ravi Kiran Bhaskar > > >> > > >> > > >> On Thu, Sep 4, 2014 at 5:08 PM, Joel Bernstein <joels...@gmail.com > > <mailto:joels...@gmail.com> > wrote: > > >> > > >> > If you want the main query to be sorted by date then the top N docs > > >> > reranked by a query, that should work. Try something like this: > > >> > > > >> > q=foo&sort=date+desc&rq={!rerank reRandDocs=1000 > > >> > reRankQuery=$myquery}&myquery=blah > > >> > > > >> > > > >> > Joel Bernstein > > >> > Search Engineer at Heliosearch > > >> > > > >> > > > >> > On Thu, Sep 4, 2014 at 4:25 PM, Ravi Solr <ravis...@gmail.com > > <mailto:ravis...@gmail.com> > wrote: > > >> > > > >> > > Can the ReRanking API be used to sort within docs retrieved by a > > date > > >> > field > > >> > > ? Can somebody help me understand how to write such a query ? > > >> > > > > >> > > Thanks > > >> > > > > >> > > Ravi Kiran Bhaskar > > >> > > > > >> > > > >> > > > > > >
