xiaoshuangzi / crf

Simple implementation of Conditional Random Fields (CRF) in Python

Conditional Random Fields (CRF)

Setup

You will need to grab my arsenal repository and stick it on your python path.

Example data for citation segmentation is included as well as very simple feature extraction (not a serious feature set).

TODO

• Regularization

• L-BFGS optimization

• Parameter averaging for sgd and perceptron

Third Party Copyright

The example dataset tagged_references.txt is due to Andrew McCallum. It is available here.