Aggregating Facets during Faceted Search
A facets aggregator is the parallel of Lucene's Collector.
While Collector collected matching documents,
an aggregator aggregates facets of a matching document.
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Interface Summary
Interface |
Description |
Aggregator |
An Aggregator is the analogue of Lucene's Collector (see
Collector ), for processing the categories
belonging to a certain document.
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Class Summary
Class |
Description |
ComplementCountingAggregator |
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CountingAggregator |
A CountingAggregator updates a counter array with the size of the whole
taxonomy, counting the number of times each category appears in the given set
of documents.
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ScoringAggregator |
An Aggregator which updates the weight of a category according to the
scores of the documents it was found in.
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