Package nltk :: Package tag :: Module crf

Module crf

An interface to Mallet's Linear Chain Conditional Random Field (LC-CRF) implementation.

A user-supplied feature detector function is used to convert each token to a featureset. Each feature/value pair is then encoded as a single binary feature for Mallet.

Classes

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MalletCRF
A conditional random field tagger, which is trained and run by making external calls to Mallet.

CRFInfo
An object used to record configuration information about a MalletCRF object.

Functions

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demo(train_size=100, test_size=100, java_home='/usr/local/jdk1.5.0/', mallet_home='/usr/local/mallet-0.4') source code