PS I checked in MySQLJDBCItemSimilarity which would let you store and read these from a database. At least that solves the memory issue. You can still put a caching wrapper on top of it too.
On Mon, Jul 13, 2009 at 9:36 AM, Sean Owen<[email protected]> wrote: > How does Lucene go from item-item links to recommendations? I'm > missing where the notion of user ratings, or even users, come into > play, or the strength of the association. > > If the issue is really just storing the item-item links efficiently in > a way that isn't in memory, how about I cook up a JDBC-based > implementation? Seem more direct.
