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Python 3 Text Processing with NLTK 3 Cookbook - Second Edition
book

Python 3 Text Processing with NLTK 3 Cookbook - Second Edition

by Jacob Perkins
August 2014
Beginner to intermediate content levelBeginner to intermediate
304 pages
7h 10m
English
Packt Publishing
Content preview from Python 3 Text Processing with NLTK 3 Cookbook - Second Edition

Classifier-based tagging

The ClassifierBasedPOSTagger class uses classification to do part-of-speech tagging. Features are extracted from words, and then passed to an internal classifier. The classifier classifies the features and returns a label, in this case, a part-of-speech tag. Classification will be covered in detail in Chapter 7, Text Classification.

The ClassifierBasedPOSTagger class is a subclass of ClassifierBasedTagger that implements a feature detector that combines many of the techniques of the previous taggers into a single feature set. The feature detector finds multiple length suffixes, does some regular expression matching, and looks at the unigram, bigram, and trigram history to produce a fairly complete set of features for each ...

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Publisher Resources

ISBN: 9781782167853Supplemental Content