Package org.terrier.querying

Provides the interfaces and classes for the querying API of the Terrier platform, the controls, post processors and filters.

See:
Description

Interface Summary

PostFilter	PostFilters are designed to complement PostProcesses.
PostProcess	PostProccess are designed to complement PostFilters.
Process	Process Interface
SearchRequest	SearchRequest is the one of two main classes of which are made available to client code by the Terrier framework at retrieval time.

Class Summary

Decorate	This class decorates a result set with metadata.
DFRBagExpansionTerms	This class implements a data structure of terms in the top-retrieved documents.
ExpansionTerms	Base class for weighting term occurrences in feedback documents.
ExpansionTerms.ExpansionTerm	This class implements a data structure for a term in the top-retrieved documents.
FeedbackDocument	Class representing feedback documents, pseudo- or otherwise.
FeedbackSelector	Implements of this class can be used to select feedback documents.
Manager	This class is responsible for handling/co-ordinating the main high-level operations of a query.
PseudoRelevanceFeedbackSelector	A feedback selector for pseudo-relevance feedback.
QueryExpansion	Implements automatic query expansion as PostFilter that is applied to the resultset after 1st-time matching.
RelevanceFeedbackSelector	Selects feedback documents from a qrels file, using the query id.
RelevanceFeedbackSelectorDocids	A feedback document selector that operates as RelevanceFeedbackSelector, except that this should be used when docids are specified in the qrels file, not docnos.
RelevantOnlyFeedbackDocuments	Select only feedback documents which have relevance &tg; 0
Request	Request SearchRequest contains the details of the search engine for one query, including the query itself, the resultset, and the controls.
Scope	Checks that the prefix of the document number (upto the first "-") is included in this list of scopes as given by the scope control.
SimpleDecorate	A simple decorator, which applies all metadata in the MetaIndex to each document on the way out.
SiteFilter	Filter that removes hosts which dont match an appropriate site: constraint, as specified in a control.

Package org.terrier.querying Description

Provides the interfaces and classes for the querying API of the Terrier platform, the controls, post processors and filters. As an example, query expansion is applied as a postprocess.