Skip to Main Content
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

Merging and splitting chunks with regular expressions

In this recipe, we'll cover two more rules for chunking. A MergeRule class can merge two chunks together based on the end of the first chunk and the beginning of the second chunk. A SplitRule class will split a chunk into two chunks based on the specified split pattern.

How to do it...

A SplitRule class is specified with two opposing curly braces surrounded by a pattern on either side. To split a chunk after a noun, you would do <NN.*>}{<.*>. A MergeRule class is specified by flipping the curly braces, and will join chunks where the end of the first chunk matches the left pattern and the beginning of the next chunk matches the right pattern. To merge two chunks where the first ends with a noun ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Python Machine Learning - Third Edition

Python Machine Learning - Third Edition

Sebastian Raschka, Vahid Mirjalili
Python Cookbook, 3rd Edition

Python Cookbook, 3rd Edition

David Beazley, Brian K. Jones

Publisher Resources

ISBN: 9781782167853Supplemental Content