Awesome I also did not know about q.alt accepting lucene style...Thanks to
both of you, Mr. Ackermann and Mr. Rockkind, I learnt a lot in just this
thread than I have done in the last 6 months of reading and dealing with
solr.
As you folks pointed out q.alt and nested queries are both great options, I
shall pursue them...asking a question on a forum is fun when you have
knowledgeable people, isnt it??? That's true reuse of resources in software
terms :-) , reuse of knowledge in developer space !!!.
Ravi Kiran Bhaskar
Principal Software Engineer
The Washington Post
On Thu, Sep 16, 2010 at 9:25 AM, Jonathan Rochkind <rochk...@jhu.edu> wrote:
> Nice, I didn't know about q.alt. Or, alternately, yes, you could use a
> nested query, good call. Which, yes, I agree is kind of confusing at
> first.
>
> &qt=dismax # use dismax for the overall query
> &bq=whatever # so we can use bq, since we're using dismax
> &q=_query_:"{!lucene} solr-lucene syntax query" # but now make our entire
> 'q' a nested query, which is set to use lucene query parser.
>
> What gets really confusing there is that the nested query expression needs
> to be in quotes -- so if you need quotes within the actual query itself (say
> for a phrase), you need to escape them. And the whole thing needs to be
> URI-encoded, of course. It does get confusing, but is quite powerful.
>
> Jonathan
> ________________________________________
> From: Chantal Ackermann [chantal.ackerm...@btelligent.de]
> Sent: Thursday, September 16, 2010 4:10 AM
> To: solr-user@lucene.apache.org
> Subject: Re: Boosting specific field value
>
> Hi Ravi,
>
> with dismax, use the parameter "q.alt" which expects standard lucene
> syntax (instead of "q"). If "q.alt" is present in the query, "q" is not
> required. Add the parameter "qt=dismax".
>
> Chantal
>
> On Thu, 2010-09-16 at 06:22 +0200, Ravi Kiran wrote:
> > Hello Mr.Rochkind,
> > I am using StandardRequestHandler so I presume
> I
> > cannot use bq param right ?? Is there a way we can mix dismax and
> > standardhandler i.e use lucene syntax for query and use dismax style for
> bq
> > using localparams/nested queries? I remember seeing your post related to
> > localparams and nested queries and got thoroughly confused
> >
> > On Wed, Sep 15, 2010 at 10:28 PM, Jonathan Rochkind <rochk...@jhu.edu
> >wrote:
> >
> > > Maybe you are looking for the 'bq' (boost query) parameter in dismax?
> > >
> > > http://wiki.apache.org/solr/DisMaxQParserPlugin#bq_.28Boost_Query.29
> > > ________________________________________
> > > From: Ravi Kiran [ravi.bhas...@gmail.com]
> > > Sent: Wednesday, September 15, 2010 10:02 PM
> > > To: solr-user@lucene.apache.org
> > > Subject: Re: Boosting specific field value
> > >
> > > Erick,
> > > I afraid you misinterpreted my issue....if I query like you
> said
> > > i.e q=source(bbc OR "associated press")^10 I will ONLY get documents
> with
> > > source BBC or Associated Press...what I am asking is - if my query
> query
> > > does not deal with source at all but uses some other field...since the
> > > field
> > > "source" will be in the result , is there a way to still boost such a
> > > document
> > >
> > > To re-iterate, If my query is as follows
> > >
> > > q=primarysection:(Politics* OR Nation*)&fq=contenttype:("Blog" OR
> "Photo
> > > Gallery") pubdatetime:[NOW-3MONTHS TO NOW]
> > >
> > > and say the resulting docs have "source" field, is there any way I can
> > > boost
> > > the resulting doc/docs that have either BBC/Associated Press as the
> value
> > > in
> > > source field to be on top
> > >
> > > Can a filter query (fq) have a boost ? if yes, then probably I could
> > > rewrite
> > > the query as follows in a round about way
> > >
> > > q=primarysection:(Politics* OR Nation*)&fq=contenttype:("Blog" OR
> "Photo
> > > Gallery) pubdatetime:[NOW-3MONTHS TO NOW] (source:("BBC" OR "Associated
> > > Press")^10 OR -source:("BBC" OR "Associated Press")^5)
> > >
> > > Theoretically, I have to write source in the fq 2 times as I need docs
> that
> > > have source values too just that they will have a lower boost
> > >
> > > Thanks,
> > >
> > > Ravi Kiran Bhaskar
> > >
> > > On Wed, Sep 15, 2010 at 1:34 PM, Erick Erickson <
> erickerick...@gmail.com
> > > >wrote:
> > >
> > > > This seems like a simple query-time boost, although I may not be
> > > > understanding
> > > > your problem well. That is, q=source(bbc OR "associated press")^10
> > > >
> > > > As for boosting more recent documents, see:
> > > >
> > > >
> > >
> http://wiki.apache.org/solr/SolrRelevancyFAQ#How_can_I_boost_the_score_of_newer_documents
> > > >
> > > > HTH
> > > > Erick
> > > >
> > > >
> > > > On Wed, Sep 15, 2010 at 12:44 PM, Ravi Kiran <ravi.bhas...@gmail.com
> >
> > > > wrote:
> > > >
> > > > > Hello,
> > > > > I am currently querying solr for a "*primarysection*" which
> will
> > > > > return documents like - *q=primarysection:(Politics* OR
> > > > > Nation*)&fq=contenttype:("Blog" OR "Photo Gallery)
> > > > pubdatetime:[NOW-3MONTHS
> > > > > TO NOW]"*. Each document has several fields of which I am most
> > > interested
> > > > > in
> > > > > single valued field called "*source*" ...I want to boost documents
> > > which
> > > > > contain "*source*" value say "Associated Press" OR "BBC" and also
> by
> > > > newer
> > > > > documents. The returned documents may have several other source
> values
> > > > > other
> > > > > than "BBC" or "Associated Press". since I specifically don't query
> on
> > > > these
> > > > > source values I am not sure how I can boost them, Iam using *
> > > > > StandardRequestHandler*
> > > > >
> > > >
> > >
>
>
>
>
