Aggregating Facets during Faceted Search


Interface Summary
Aggregator An Aggregator is the analogue of Lucene's Collector (see Collector), for processing the categories belonging to a certain document.

Class Summary
ComplementCountingAggregator A CountingAggregator used during complement counting.
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.

Package Description

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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