lucidworks Archives - Solr Evolved

10 Mar 2011

Solr relevancy function queries

by Yonik Seeley | posted in: lucene, search, solr | 0

Lucene’s default ranking function uses factors such as tf, idf, and norm to help calculate relevancy scores. Solr has now exposed these factors as function queries. docfreq(field,term) returns the number of documents that contain the term in the field. termfreq(field,term) … Continued

17 Dec 2010

Solr Result Grouping / Field Collapsing Improvements

by Yonik Seeley | posted in: lucene, search, solr, Uncategorized | 0

I previously introduced Solr’s Result Grouping, also called Field Collapsing, that limits the number of documents shown for each “group”, normally defined as the unique values in a field or function query. Since then, there have been a number of … Continued