Package org.terrier.matching.models.aftereffect

Provides the interface and the classes for implementing the term frequency normalisation component in the DFR framework. The implemented classes can be used by specifying the class name in /etc/trec.models, or in property trec.model. For instance, adding a line DFRWeightingModel(P,L,2) in file /etc/trec.models tells the systems to use the PL2 model to run retrieval. P stands for class P in this package, L stands for class L in package org.terrier.matching.basicmodel, and "2" stands for class 2 in this package.

Class Summary

Class	Description
AfterEffect	This class provides a contract for implementing the first normalisation by after effect models for the DFR framework.
B	This class implements the B model for the first normalisation by after effect.
L	This class implements the L model for the first normalisation by after effect.
L5	This class implements the L5 model for the first normalisation by after effect.
LL	This class implements the LL model for the first normalisation by after effect.