The crf-chain1-constrained package

[Tags: bsd3, library]

The library provides efficient implementation of the first-order, linear-chain conditional random fields (CRFs) with position-wise constraints imposed over label values.

It is strongly related to the simpler library where constraints are not taken into account and all features which are not included in the CRF model are considered to have probability of 0. Here, on the other hand, such features do not influence the overall probability of the (sentence, labels) pair - they are assigned the default potential of 0.

Efficient algorithm for determining marginal probabilities of individual labels is provided. The tagging is performed with respect to marginal probabilities.


Versions0.1.0, 0.1.1, 0.1.2, 0.2.0, 0.2.1, 0.3.0, 0.3.1, 0.3.2
Change logNone available
Dependenciesarray, base (==4.*), binary, containers, data-lens, logfloat, monad-codec (==0.2.*), parallel, random, sgd (==0.3.*), vector, vector-binary [details]
CopyrightCopyright (c) 2012 IPI PAN
AuthorJakub Waszczuk
Home page
Source repositoryhead: git clone git://
UploadedTue Apr 16 18:17:55 UTC 2013 by JakubWaszczuk
Downloads1311 total (61 in last 30 days)
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StatusDocs uploaded by user
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