alphagov/rummager — pull request #6 by robyoung (2012-06-28 09:12:13+00:00)
Title: Set dismax min match to 75%

The Solr DisMax minimum match (mm) parameter defines how many
should match for the query to be valid. Previously this was
defaulting to 100% due to defaultOp being set to AND in the schema.xml.

The previous configuration was causing problems for queries with more
terms. For example with mm set to 100% the query "school term times"
does not return /school-term-holiday-dates because the term 'times' does
not appear in the document. Reducing the mm to 75% brings the document
up to position 2.