Thanks, but even with group.main=true the results are not in relevancy (score) order, they are in group order. Which is why I can't use it as is.
Tom On 6 Dec 2012, at 19:00, Way Cool <way1.wayc...@gmail.com> wrote: > Grouping should work: > group=true&group.field=source_id&group.limit=3&group.main=true > > On Thu, Dec 6, 2012 at 2:35 AM, Tom Mortimer <bano...@gmail.com> wrote: > >> Sounds like it's worth a try! Thanks Andre. >> Tom >> >> On 5 Dec 2012, at 17:49, Andre Bois-Crettez <andre.b...@kelkoo.com> wrote: >> >>> If you do grouping on source_id, it should be enough to request 3 times >>> more documents than you need, then reorder and drop the bottom. >>> >>> Is a 3x overhead acceptable ? >>> >>> >>> >>> On 12/05/2012 12:04 PM, Tom Mortimer wrote: >>>> Hi everyone, >>>> >>>> I've got a problem where I have docs with a source_id field, and there >> can be many docs from each source. Searches will typically return docs from >> many sources. I want to restrict the number of docs from each source in >> results, so there will be no more than (say) 3 docs from source_id=123 etc. >>>> >>>> Field collapsing is the obvious approach, but I want to get the results >> back in relevancy order, not grouped by source_id. So it looks like I'll >> have to fetch more docs than I need to and re-sort them. It might even be >> better to count source_ids in the client code and drop excess docs that >> way, but the potential overhead is large. >>>> >>>> Is there any way of doing this in Solr without hacking in a custom >> Lucene Collector? (which doesn't look all that straightforward). >>>> >>>> cheers, >>>> Tom >>>> >>>> >>>> -- >>>> André Bois-Crettez >>>> >>>> Search technology, Kelkoo >>>> http://www.kelkoo.com/ >>> >>> Kelkoo SAS >>> Société par Actions Simplifiée >>> Au capital de € 4.168.964,30 >>> Siège social : 8, rue du Sentier 75002 Paris >>> 425 093 069 RCS Paris >>> >>> Ce message et les pièces jointes sont confidentiels et établis à >> l'attention exclusive de leurs destinataires. Si vous n'êtes pas le >> destinataire de ce message, merci de le détruire et d'en avertir >> l'expéditeur. >> >>
