Thanks for the replies, it fixed my mind, and I now have something to implement :o) I will try to do that with 2 requests: - 1 grouped by source to retrieve the documents to boost - 1 with a FunctionQuery to add the boosts computed during the first request
It won't be easy to do that with 1 request because my results must be grouped by another field than source. (a 'forum' doc correponds to a post and will be grouped by topic, ...) And about the random field, I suspect that, if there's 1000 forum docs for 10 news doc, there will be 100 boosted forum docs for 1 boosted news doc. And my problem still remains. Thanks, Franck Le mercredi 21 mars 2012 à 14:24 -0300, Emmanuel Espina a écrit : > In general the algorithm considers what is more relevant and probably > you should check why one kind of result is giving always higher scores > than the others. Are you using norms (not setting omitNorms = true). > With debugQuery=true you can get a detail of how the score is > calculated. > > That would be solving the cause. To solve the symptom probably you can > use FieldCollapsing : http://wiki.apache.org/solr/FieldCollapsing > You group by source and set the number of documents per group to 10 > and in that way you would get results in all the categories. Then > implement some criteria in your app to select documents from those > sources based on the score. > > Thanks > Emmanuel > > > 2012/3/21 fbrisbart <fbrisb...@bestofmedia.com>: > > Hi all, > > > > I have, in my dataset, documents from different sources (forum, news, > > reviews, ...) > > And I'd like to have a mix of them in my search results. > > > > > > The problem is that, depending only on the relevance, the results are > > often grouped by source (Ex.:50 'forum' docs before the first 'review' > > doc) > > So, I am looking for a way to slightly disseminate the results and avoid > > this behaviour. > > > > I could run 1 search per source and manually do the mix. But, I have ~10 > > different sources, and I'm afraid this will be too slow. > > > > Is there a clean & fast way to do that ? I eventually think about > > implementing a custom Scorer. > > > > > > > > Thanks, > > Franck > >
