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)

Hybrid approaches for NLP applications

Hybrid approaches sometimes really help us improve the result, of our NLP applications. For example, if we are developing a grammar correction system, a module that identifies multiword expressions such as kick the bucket, and a rule-based module that identifies the wrong pattern and generates the right pattern. This is one kind of hybrid approach. Let's take a second example for the same NLP application. You are making a classifier that identifies the correct articles (determiners - a, an, and the) for the noun phrase in a sentence. In this system, you can take two categories - a/an and the. We need to develop a classifier that will generate the determiner category, either a/an or the. Once we generate the articles for the noun phrase, we can apply a rule-based system that further decides the actual determiner for the first category...