On Tue, Aug 21, 2012 at 7:42 AM, shashank <shashank91.b...@gmail.com> wrote: > Hello, > > I am working on a project wherein each entity to be ranked is not a single > document but infact a group of documents. > > So, the ranking not only involves standard search engine scoring parameters > but also the association of documents within an entity/group i.e. > association of documents within the group also contributes to the ranking > score.
You may want to look at Lucene's block join module (http://lucene.apache.org/core/4_0_0-BETA/join/index.html): combined with IndexWriter's add/updateDocuments functionality which lets you add documents as a 'group'. Currently I think the way in which the group is scored is just an enum with a fixed set of choices (ScoreMode), so you might have to modify the source code at the moment if you have a sophisticated way of scoring the group of documents, but this would be nice to fix so that its something extensible... -- lucidworks.com
