The BoostingQuery class can be used to effectively demote results that match a given query.
A query that executes high-frequency terms in a optional sub-query to prevent slow queries due to "common" terms like stopwords.
An instance of this subclass should be returned by
Query that sets document score as a programmatic function of several (sub) scores: the score of its subQuery (any query) (optional) the score of its
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