Book Image

Natural Language Processing and Computational Linguistics

By : Bhargav Srinivasa-Desikan
Book Image

Natural Language Processing and Computational Linguistics

By: Bhargav Srinivasa-Desikan

Overview of this book

Modern text analysis is now very accessible using Python and open source tools, so discover how you can now perform modern text analysis in this era of textual data. This book shows you how to use natural language processing, and computational linguistics algorithms, to make inferences and gain insights about data you have. These algorithms are based on statistical machine learning and artificial intelligence techniques. The tools to work with these algorithms are available to you right now - with Python, and tools like Gensim and spaCy. You'll start by learning about data cleaning, and then how to perform computational linguistics from first concepts. You're then ready to explore the more sophisticated areas of statistical NLP and deep learning using Python, with realistic language and text samples. You'll learn to tag, parse, and model text using the best tools. You'll gain hands-on knowledge of the best frameworks to use, and you'll know when to choose a tool like Gensim for topic models, and when to work with Keras for deep learning. This book balances theory and practical hands-on examples, so you can learn about and conduct your own natural language processing projects and computational linguistics. You'll discover the rich ecosystem of Python tools you have available to conduct NLP - and enter the interesting world of modern text analysis.
Table of Contents (22 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Keras and spaCy


In the previous chapter, we already discussed various deep learning frameworks - in this chapter, we will discuss a little more in detail about one, in particular, Keras, while also exploring how we can use deep learning with spaCy.

During our attempts at text generation, we already used Keras, but did not explain the motivation behind using the library, or indeed even how or why we constructed our model the way we did. We will attempt to demystify this, as well as set up a neural network model that will aid us in text classification.

In our brief review of the various deep learning frameworks available in Python, we described Keras as a high-level library which allows us to easily construct neural networks.

Fig 14.1 The arXiv mentions of Keras. arXiv is a website where researchers upload research papers before it is accepted by a journal. Here, the x-axes are the different Python deep learning libraries, and the y-axis is the number of references of that library by the papers...