CRFsuite 0.8

Naoaki Okazaki — Wed, 18 Mar 2009 15:19:02 -0000

CRFSuite is an implementation of Conditional Random Fields (CRFs) for labeling sequential data. Among the various implementations of CRFs, this software provides following features.

Speed-oriented implementation written in pure C.
Very fast parameter estimation using Stochastic Gradient Descent (SGD).
Fast parameter estimation using Limited-memory BFGS (L-BFGS).
L1 regularization (Laplacian prior) using Orthant-Wise Limited-memory Quasi-Newton (OWL-QN) method.
L2 regularization (Gaussian prior).
Performance evaluation on training.
Simple data I/O format.
An efficient file format for storing/accessing CRF models.

mloss.org CRFsuite

CRFsuite 0.8