[prev in list] [next in list] [prev in thread] [next in thread] 

List:       lucene-user
Subject:    Re: Reciprocal Rank Fusion (RRF)
From:       Dan Rosher <rosherd () gmail ! com>
Date:       2023-04-01 18:56:57
Message-ID: CAB-d0MbfgbUdcg-L5fa0b7gReN3f7SVtArExrPTUvE19PcUwkQ () mail ! gmail ! com
[Download RAW message or body]


Hi Vaijanath,

That would be great, thank you. And this will implement this formula ?

RRFscore(d ∈ D) = sum r∈R   1 /(k + r(d) )

where r(d) = rank of d i.e. 1,2,....n

Thanks again and kind regards,
Dan



On Sat, 1 Apr 2023 at 17:41, Vaijanath Rao <vaiju1981@gmail.com> wrote:

> Hi Dan,
>
> This was a long time ago, but I remember we use the recip function in solr
> to built it out. I will try to reach out to team to see if they can give me
> access to it. If not I will try to re-implement it and send it to you. This
> was thought for Solr-5/6.
>
> --Thanks and Regards
> Vaijanath
>
> On Sat, Apr 1, 2023 at 1:33 AM Dan Rosher <rosherd@gmail.com> wrote:
>
> > Hi Vaijanath,
> >
> > Was it a custom rank function, or custom rrf function for the sorting?
> Are
> > you able to provide an example?
> >
> > Many thanks,
> > Dan
> >
> > On Fri, 31 Mar 2023 at 17:42, Vaijanath Rao <vaiju1981@gmail.com> wrote:
> >
> > > We implemented it as a sort function instead of Q-parser. It was easier
> > and
> > > speed wise more efficient.
> > >
> > > --Thanks and Regards
> > > Vaijanath
> > >
> > > On Fri, Mar 31, 2023 at 8:23 AM Dan Rosher <rosherd@gmail.com> wrote:
> > >
> > > > Hi,
> > > >
> > > > Would anyone have an idea of how one might implement Reciprocal Rank
> > > Fusion
> > > > (RRF) with existing qparsers/function queries (e.g see
> > > > https://plg.uwaterloo.ca/~gvcormac/cormacksigir09-rrf.pdf) ? I was
> > > > thinking
> > > > it would be interesting to test the outcome with a lexical + dense
> > vector
> > > > search, or would this need to be a custom QParser ?
> > > >
> > > > Cheers,
> > > > Dan
> > > >
> > >
> > >
> > > --
> > > I am feeling fine, healthier and Happier, what about you
> > >
> >
>
>
> --
> I am feeling fine, healthier and Happier, what about you
>


[prev in list] [next in list] [prev in thread] [next in thread]