Also, I've tried adding: <similarity class="org.apache.lucene.misc.SweetSpotSimilarity"/>
To the end of the schema file so that it is applied globally but it does not appear to change the score either. What am I doing incorrectly? Thanks, Brian Lamb On Thu, May 19, 2011 at 2:45 PM, Brian Lamb <brian.l...@journalexperts.com>wrote: > Hi all, > > Based on advice I received on a previous email thread, I applied patch > https://issues.apache.org/jira/browse/SOLR-2338. My goal was to be able to > apply a similarity class to certain fields but not all fields. > > I ran the following commands: > > $ cd <your Solr trunk checkout dir> > $ svn up > $ wget > https://issues.apache.org/jira/secure/attachment/12475027/SOLR-2338.patch > $ patch -p0 -i SOLR-2338.patch > > And I did not get any errors. I then created my own SimilarityClass listed > below because it isn't very large: > > package org.apache.lucene.misc; > import org.apache.lucene.search.DefaultSimilarity; > > public class SimpleSimilarity extends DefaultSimilarity { > public SimpleSimilarity() { super(); } > > public float idf(int dont, int care) { return 1; } > } > > As you can see, it isn't very complicated. I'm just trying to remove the idf > from the scoring equation in certain cases. > > Next, I make a change to the schema.xml file: > > <fieldType name="string_noidf" class="solr.StrField" sortMissingLast="true" > omitNorms="true"> > > <similarity class="org.apache.lucene.misc.SimpleSimilarity"/> > </fieldType> > > And apply that to the field in question: > > <field name="string_noidf" multiValued="true" type="string_noidf" > indexed="true" stored="true" required="false" omitNorms="true" /> > > But I think something did not get applied correctly to the patch. I restarted > and did a full import but the scores are exactly the same. Also, I tried > using the existing SweetSpotSimilarity: > <fieldType name="string_noidf" class="solr.StrField" sortMissingLast="true" > omitNorms="true"> > <similarity class="org.apache.lucene.misc.SweetSpotSimilarity"/> > > </fieldType> > > But the scores remained unchanged even in that case. At this point, I'm not > quite sure how to debug this to see whether the problem is with the patch or > the similarity class but given that the SweetSpot similarity class didn't > work either, I'm inclined to think it was a problem with the patch. > > Any thoughts on this one? > > Thanks, > > Brian Lamb > > >
