crfsuite

Fast implementation of conditional random fields (CRF) for sequence labeling

brewmacoslinux

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Fast implementation of conditional random fields

crfsuite

Train a CRF model on labeled training data$ crfsuite learn -m model.crfsuite train.txt

Tag sequences using a trained model$ crfsuite tag -m model.crfsuite test.txt

Evaluate model performance on test data$ crfsuite eval -m model.crfsuite test.txt