Conditional Random Fields in Python

I implemented conditional random fields in python/numpy/scipy.
This is my study implements, not practical.

http://github.com/shuyo/iir/blob/master/sequence/crf.py

– liner-chain CRF, each binary feature function has one observation and one latent variable or two latent variables.
– less 200 lines for CRF module
– It infers the parameters of CRF with fmin_bfgs function of scipy.
– L2 regularization

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