I would prefer to use SchemaSimilarityFactory as a global similarity and configure a per-field similarity of which some use a flat TF impl. Much simples and no need to patch anything, just build a custom sim.
-----Original message----- > From:Upayavira <u...@odoko.co.uk> > Sent: Wed 16-Jan-2013 21:22 > To: solr-user@lucene.apache.org > Subject: Re: Disable term frequency for some fields in solr > > There's gonna be two ways to do this - for yourself or for everyone. > > For yourself, you'll want to subclass > org.apache.lucene.search.similarities.DefaultSimilarity and > org.apache.solr.search.similarities.DefaultSimilarityFactory. > > Alternatively, patch those two files to allow setting the TF or the IDF > via a configuration parameter, and post a patch to JIRA. I'm sure there > are other folks that would want the feature, and would hope it would be > accepted easily. > > E.g. disableIDF=true or disableTF=true would make those functions just > return 1. > > My thoughts anyhow. > > Upayavira > > On Wed, Jan 16, 2013, at 11:37 AM, Amit Jha wrote: > > Done same thing in solr3.6 and working but in sorl3.6 filed level of > > similarity is not available. And Solr4 has Similarity Factories. So I was > > not getting how do I do it on solr4. Which class do i need to extend and > > move ahead. > > > > > > On Wed, Jan 16, 2013 at 4:44 PM, Upayavira <u...@odoko.co.uk> wrote: > > > > > For someone versed in Jav >
