lucene/contrib/queries
Michael Busch 9c2a036db3 - LUCENE-908: Improvements and simplifications for how the MANIFEST file and the META-INF dir are created.
- LUCENE-935: Various improvements for the maven artifacts. Now the artifacts also include the sources as .jar files. 

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@568766 13f79535-47bb-0310-9956-ffa450edef68
2007-08-22 23:16:48 +00:00
..
src LUCENE-931: adding missing license headers to various files 2007-06-09 06:09:46 +00:00
build.xml LUCENE-931: adding missing license headers to various files 2007-06-09 06:09:46 +00:00
pom.xml.template - LUCENE-908: Improvements and simplifications for how the MANIFEST file and the META-INF dir are created. 2007-08-22 23:16:48 +00:00
readme.txt Added XML-query-parser module for new extensible query parser that handles queries expressed as XML. Is dependent on new "queries" contrib module. 2006-02-25 00:39:18 +00:00

readme.txt

This module contains a number of filter and query objects that add to core lucene.

The "MoreLikeThis" class from the "similarity" module has been copied into here.
If people are generally happy with this move then the similarity module can be deleted, or at least a 
"Moved to queries module..." note left in its place.

==== FuzzyLikeThis  - mixes the behaviour of FuzzyQuery and MoreLikeThis but with special consideration
of fuzzy scoring factors. This generally produces good results for queries where users may provide details in a number of 
fields and have no knowledge of boolean query syntax and also want a degree of fuzzy matching. The query is fast because, like
MoreLikeThis, it optimizes the query to only the most distinguishing terms.

==== BoostingQuery - effectively demotes search results that match a given query. 
Unlike the "NOT" clause, this still selects documents that contain undesirable terms, 
but reduces the overall score of docs containing these terms.


==== TermsFilter -  Unlike a RangeFilter this can be used for filtering on multiple terms that are not necessarily in 
a sequence. An example might be a collection of primary keys from a database query result or perhaps 
a choice of "category" labels picked by the end user.




Mark Harwood
25/02/2006