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From Nicholas Ding <nicholas...@gmail.com>
Subject Re: Include Solr score into a ranking algorithm
Date Thu, 20 Nov 2014 14:23:05 GMT
Hi Mikhail,

Thank you very much! I'm using eDisMax by default, I think I will need to
change it to defType=func and pass all the query parameters (fq mainly) to
the sub query right?

Nicholas Ding


On Thu, Nov 20, 2014 at 5:22 AM, Mikhail Khludnev <
mkhludnev@griddynamics.com> wrote:

> Hello Nicholas!
> you can specify a function query as a main query where you can operate with
> DVs, then you can use regular tfidf score from arbitrary query as one of
> the arguments in the functional query see an example in
> http://wiki.apache.org/solr/FunctionQuery#query
>
> have a good research!
>
> On Thu, Nov 20, 2014 at 6:45 AM, Nicholas Ding <nicholasdsj@gmail.com>
> wrote:
>
> > Hi,
> >
> > Currently, I'm trying to implement a ranking algorithm on Solr to include
> > TFIDFSimilarity score into a formula.
> >
> > Ranking = TFIDFSimilarity Score * X1 + V1 * X2 + V2 * X3 + ..... + Vn-1 *
> > Xn
> >
> > Basically, the values of Vn are stored in DocValues, I can access them in
> > customized Function Query. The Xn are parameters I will pass to the
> > Function Query.
> >
> > I searched on internet and dig a little bit in the Solr/Lucene source
> code.
> > I found there is no way to access TFIDFSimilarity Score in Function
> Query.
> > (Please correct me if I'm wrong.)
> >
> > So, I'm wondering is it possible to do my ranking algorithm in
> Solr/Lucene?
> >
> > --
> > Nicholas Ding
> >
>
>
>
> --
> Sincerely yours
> Mikhail Khludnev
> Principal Engineer,
> Grid Dynamics
>
> <http://www.griddynamics.com>
> <mkhludnev@griddynamics.com>
>

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