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I am looking for a conditional random field (CRF) implementation with a Python API that allows a CRF model to be trained multithreadedly.

I currently use pyCRFsuite, which works great except that CRF models cannot be trained with more than one threads. I use it for natural language processing purposes.

Ideally it should work on Linux.

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https://github.com/adsva/python-wapiti can use multiple threads at training time.

With crfsuite you can still do hyperparameter search in parallel, see e.g. an example at https://github.com/TeamHG-Memex/sklearn-crfsuite/blob/master/docs/CoNLL2002.ipynb

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