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)

Gradient descent-based optimization

In this section, we will discuss gradient descent-based optimization options that are provided by TensorFlow. Initially, it will not be clear which optimization option you should use, but as and when you know the actual logic of the DL algorithm, it will became much clearer to you.

We use a gradient descent-based approach to develop an intelligent system. Using this algorithm, the machine can learn how to identify patterns from the data. Here, our end goal is to obtain the local minimum and the objective function is the final prediction that the machine will make or result that is generated by the machine. In the gradient descent-based algorithm, we are not concentrating on how to achieve the best final goal for our objective function in the first step, but we will iteratively or repeatedly take small steps and select the intermediate best option...