function query Archives

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

6 Jul 2009

Ranges over Functions in Solr 1.4

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

Solr 1.4 contains a new feature that allows range queries or range filters over arbitrary functions. It’s implemented as a standard Solr QParser plugin, and thus easily available for use any place that accepts the standard Solr Query Syntax by … Continued