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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