Book Image

Natural Language Processing with Java - Second Edition

By : Richard M. Reese
Book Image

Natural Language Processing with Java - Second Edition

By: Richard M. Reese

Overview of this book

Natural Language Processing (NLP) allows you to take any sentence and identify patterns, special names, company names, and more. The second edition of Natural Language Processing with Java teaches you how to perform language analysis with the help of Java libraries, while constantly gaining insights from the outcomes. You’ll start by understanding how NLP and its various concepts work. Having got to grips with the basics, you’ll explore important tools and libraries in Java for NLP, such as CoreNLP, OpenNLP, Neuroph, and Mallet. You’ll then start performing NLP on different inputs and tasks, such as tokenization, model training, parts-of-speech and parsing trees. You’ll learn about statistical machine translation, summarization, dialog systems, complex searches, supervised and unsupervised NLP, and more. By the end of this book, you’ll have learned more about NLP, neural networks, and various other trained models in Java for enhancing the performance of NLP applications.
Table of Contents (19 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Using multiple cores with the Stanford pipeline


The annotate method can also take advantage of multiple cores. It is an overloaded method where one version uses an instance of an Iterable<Annotation> as its parameter. It will process each Annotation instance using the processors available. We will use the previously defined pipeline object to demonstrate this version of the annotate method. First, we create four Annotation objects based on four short sentences, as shown here. To take full advantage of the technique, it would be better to use a larger set of data. The following is the working code snippet:

Annotation annotation1 = new Annotation("The robber took the cash and ran.");
Annotation annotation2 = new Annotation("The policeman chased him down the street.");
Annotation annotation3 = new Annotation("A passerby, watching the action, tripped the thief "
            + "as he passed by.");
Annotation annotation4 = new Annotation("They all lived happily ever after, except for the...