Package dragon.ir.search.expand

Various query expansion approaches are included.

See:
Description

Interface Summary

QueryExpansion

Interface of query expansion method

Class Summary

AbstractQE	Abstract Query Expansion
InformationFlowQE	Query Expansion based on Information Flow

Package dragon.ir.search.expand Description

Various query expansion approaches are included.

Package Specification

Query expansions techniques are used before starting a real search. Prior knowledge is often used for query expansions. To develop a new query expansion approach, one should implement an interface called QueryExpansion. To use query expansion technique for retrieval, one can simply call a query expansion searcher (dragon.ir.search.QueryExpansionSearcher)