Hi,
In my SolrJ, I used ModifiableSolrParams and I set ("rows",50) but it
> still returns less than 10 for each cluster.
>
Oh, the number of documents per cluster very much depends on the
characteristics of your documents, it often happens that the algorithms
create larger numbers of smaller clusters. However, all returned documents
should get assigned to some cluster(s), the Other Topics one in the worst
case. Does that hold in your case?
If you'd like to tune clustering a bit, you can try Carrot2 tools:
http://download.carrot2.org/stable/manual/#section.getting-started.solr
and then:
http://download.carrot2.org/stable/manual/#chapter.tuning
Cheers,
S.
