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)

Comparing NLU and NLG

We have already seen the NLU and NLG definitions, details, and differences in Chapter 3, Understanding Structure of Sentences. In this section, we are comparing these two subareas of NLP in terms of an AI-enabled application.

Natural language understanding

Earlier, we have seen that NLU is more about dealing with an understanding of the structure of the language, whether it is words, phrases, or sentences. NLU is more about applying various ML techniques on already generated NL. In NLU, we focus on syntax as well as semantics. We also try to solve the various types of ambiguities related to syntax and semantics. We have seen the lexical ambiguity, syntactic ambiguity, semantic ambiguity, and pragmatics...