Book Image

Python Natural Language Processing

Book Image

Python Natural Language Processing

Overview of this book

This book starts off by laying the foundation for Natural Language Processing and why Python is one of the best options to build an NLP-based expert system with advantages such as Community support, availability of frameworks and so on. Later it gives you a better understanding of available free forms of corpus and different types of dataset. After this, you will know how to choose a dataset for natural language processing applications and find the right NLP techniques to process sentences in datasets and understand their structure. You will also learn how to tokenize different parts of sentences and ways to analyze them. During the course of the book, you will explore the semantic as well as syntactic analysis of text. You will understand how to solve various ambiguities in processing human language and will come across various scenarios while performing text analysis. You will learn the very basics of getting the environment ready for natural language processing, move on to the initial setup, and then quickly understand sentences and language parts. You will learn the power of Machine Learning and Deep Learning to extract information from text data. By the end of the book, you will have a clear understanding of natural language processing and will have worked on multiple examples that implement NLP in the real world.
Table of Contents (13 chapters)

Importance of vectorization in deep learning

This is more of a discussion with you from my end. As we all know, computers can't understand NL directly, so we need to convert our NL output into numerical format. We have various word embedding techniques, as well as some basic statistical techniques such as indexing, tf-idf, one-hot encoding, and so on. By using all these techniques, or some of these techniques, you can convert your text input into numerical format. Which techniques you choose totally depends on the NLP applications. So, there are two major points behind why we convert NL input to numerical format. It is basically done because the computer can only understand numerical data, so we have to convert text data to numerical data and computers are very good at performing computation on given numerical data. These are two major points that come to my mind when we...