chaine 0.2.0

A Lightweight Conditional Random Field

A Lightweight Conditional Random Field

This is a modern Python library without any third-party dependencies and a backend written in C implementing conditional random fields for natural language processing tasks like named entity recognition or part-of-speech tagging.

You can install the latest stable version from PyPI:

$ pip install chaine

If you are interested in the theoretical concepts behind conditional random fields, I can recommend the introducing paper by Lafferty et al.

Example

>>> import chaine
>>> sequences = [[["a", "a"], ["b", "b"]]]
>>> labels = [["0", "1"]]
>>> model = chaine.train(sequences, labels)
>>> model.predict(sequences)
[['0', '1']]

Check out the introducing Jupyter notebook.

Credits

This library makes use of and is partially based on:

• CRFsuite
• libLBFGS
• python-crfsuite
• sklearn-crfsuite