CRF++

Learning :
crf_learn template_file train_file model_file

crf_learn -f 2 template_file train_file model_file   # -f NUM : threshould for the feature
crf learn -a MIRA template_file train_file model_file  # -a MIRA : learn with MIRA
crf_learn -c 1.5 template_file train_file model_file # -c float : balance between overfitting and underfitting

Test:
crf_test -m model_file test_file

crf_test -n 20 -m model_file test_file  # -n NUM : N-best results