Part of Speech Tagging

A Part of Speech tagger using the Average Perceptron.

Based on the tagger from here

This uses the following features:

• The Suffix (last 3 characters) of the current word (unnormalized).
• The Prefix (first character) of the current word (unnormalized).
• The current word.
• The previous Part of Speech tag and the current word.
• The Previous Part of Speech tag.
• The Part of Speech tag from the word before last.
• Both of the previous Part of Speech tags.
• The previous word.
• The previous word suffix.
• The word from 2 steps back.
• The next word.
• The next word suffix.
• The word after next.
• A Bias

Includes the following Pretrained models.

• POS Tagger, Trained on the CoNLL 2000 Chunking data
• Chunker, Trained on the CoNLL 2000 Chunking data
• Slot filler, Trained on ATIS data