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)

Implementation of simple examples

In this section, we are going to implement the famous word2vec example, which is adding woman and king and subtracting man, and then the resultant vector shows the vector value of queen.

We are not going to train the word2vec model, on our data and then build our own word2vec model because there is a huge amount of data on which Google has already trained their word2vec model and provided us with pre-trained models. Now, if you want to replicate the training process on that much data, then we need a lot of computational resources, so we will use pre-trained word2vec models from Google. You can download the pre-trained model from this link: https://code.google.com/archive/p/Word2vec/.

After clicking on this link, you need to go to the section entitled pre-trained word and phrase vectors, download the model named GoogleNews-vectors-negative300...