lucene-solr-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Erick Erickson <erickerick...@gmail.com>
Subject Re: Question about rating documents
Date Thu, 29 Jan 2009 19:40:43 GMT
This may not be practical, as it would involve re-indexing
all your documents periodically, but here goes anyway...

You could think about *index-time* boosts. Somewhere
you keep a record of the recommendations, then re-index
your corpus adding some suitable boost to each field in
your document based upon those recommendations.

>From an old post on the Lucene list by Hoss:

<<<...index time field boosts are a way to express things
like "this documents title is worth twice as much as the title
of most documents...">>>

Which seems like what you're after.

But it may not be practical to re-index your corpus,
and the other interesting issue would be how you keep
track of documents since the Lucene doc ID is probably
useless, you'd have to have your own unique, persistent
field.

Best
Erick

On Thu, Jan 29, 2009 at 2:27 PM, Reece <liquidpele@gmail.com> wrote:

> Hmm, I already boost certain fields, but from what I know about it you
> would need to know the boost value ahead of time which is not possible
> as it would be a different boost for each document depending on how it
> was rated..
>
> I did think of one thing though.  If I had a field that had a value of
> 1-5 for each document, and took that and used it to then add a boost
> to the fields I was actually searching on (or the final score) that
> would probably work, is that possible?
>
> -Reece
>
>
>
> On Thu, Jan 29, 2009 at 1:51 PM, Matthew Runo <mruno@zappos.com> wrote:
> > You could use a boost function to gently boost up items which were marked
> as
> > more popular.
> >
> > You would send the function query in the "bf" parameter with your query,
> and
> > you can find out more about syntax here:
> > http://wiki.apache.org/solr/FunctionQuery
> >
> > Thanks for your time!
> >
> > Matthew Runo
> > Software Engineer, Zappos.com
> > mruno@zappos.com - 702-943-7833
> >
> > On Jan 29, 2009, at 10:27 AM, Reece wrote:
> >
> >> Currently I'm using SOLR 1.2 to index a few million documents.  It's
> >> been requested that a way for users to rate the documents be done so
> >> that something rated higher would show up higher in search results and
> >> vice verse.
> >>
> >> I've been thinking about it, but can't come up with a good way to do
> >> this and still have the "best match" ranking of the results according
> >> to search terms entered by the users.
> >>
> >> I was hoping someone had done something similar or would have some
> >> insight on it.
> >>
> >> Thanks in advance!
> >>
> >> -Reece
> >>
> >
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message