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 |
|
| 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.
|
| ScoringAggregator |
An Aggregator which updates the weight of a category according to the
scores of the documents it was found in. |