3.Ian H. Witten, Eibe Frank, and Mark A. Hall. Data Mining: Practical Machine Learning Tools and Techniques (Third Edition). 2011. Morgan Kaufman. ISBN: 978-0-12-374856-0 (http://www.cs.waikato.ac.nz/ml/weka/book.html)
2.Foundations of Statistical Natural Language Processing, Christopher D. Manning and Hinrich Schütze, 1999, The MIT Press
1.SPEECH and LANGUAGE PROCESSING: An Introduction to Natural Language Processing, Computational Linguistics and Speech Recognition, Daniel Jurafsky & James H. Martin, 2009 (Second Edition), Prentice-Hall
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