NaturalLanguageProcessingwithPython

Natural Language Processing with Python Natural Language Processing with Python Steven Bird, Ewan Klein, and Edward Loper Beijing • Cambridge • Farnham • Köln • Sebastopol • Taipei • Tokyo Natural Language Processing with Python by Steven Bird, Ewan Klein, and Edward Loper Copyright © 2009 Steven Bird, Ewan Klein, and Edward Loper. All rights reserved. Printed in the United States of America. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472. O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles ( http://my.safaribooksonline.com ). For more information, contact our corporate/institutional sales department: (800) 998-9938 or corporate@oreilly.com . Editor: Julie Steele Indexer: Ellen Troutman Zaig Production Editor: Loranah Dimant Cover Designer: Karen Montgomery Copyeditor: Genevieve d’Entremont Interior Designer: David Futato Proofreader: Loranah Dimant Illustrator: Robert Romano Printing History: June 2009: First Edition. Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are regist......