Hi - no you don't have to, although maybe if you changed on how norms are encoded. Markus
-----Original message----- > From:elisabeth benoit <elisaelisael...@gmail.com> > Sent: Thursday 9th October 2014 12:26 > To: solr-user@lucene.apache.org > Subject: does one need to reindex when changing similarity class > > I've read somewhere that we do have to reindex when changing similarity > class. Is that right? > > Thanks again, > Elisabeth >