Hello. I'm doing some research regarding the usage of Solr for implementing content recommendation engines.
Initially, I was looking at http://wiki.apache.org/solr/MoreLikeThis Then, it turned out that most implementations are based on a combination of Mahout, Solr and Hadoop. Please, are you involved in or aware of any large scale web site that uses Solr in their recommendation engine? Thanks. Arcadius.