{@link Scorer} implementation which scores text fragments by the number of unique query terms found.
This class uses the {@link QueryTermExtractor} class to process determine the query terms and
their boosts to be used.
Namespace: Lucene.Net.HighlightAssembly: Lucene.Net.Contrib.Highlighter (in Lucene.Net.Contrib.Highlighter.dll) Version: 2.3.2.1