Book Image

The Handbook of NLP with Gensim

By : Chris Kuo
Book Image

The Handbook of NLP with Gensim

By: Chris Kuo

Overview of this book

Navigating the terrain of NLP research and applying it practically can be a formidable task made easy with The Handbook of NLP with Gensim. This book demystifies NLP and equips you with hands-on strategies spanning healthcare, e-commerce, finance, and more to enable you to leverage Gensim in real-world scenarios. You’ll begin by exploring motives and techniques for extracting text information like bag-of-words, TF-IDF, and word embeddings. This book will then guide you on topic modeling using methods such as Latent Semantic Analysis (LSA) for dimensionality reduction and discovering latent semantic relationships in text data, Latent Dirichlet Allocation (LDA) for probabilistic topic modeling, and Ensemble LDA to enhance topic modeling stability and accuracy. Next, you’ll learn text summarization techniques with Word2Vec and Doc2Vec to build the modeling pipeline and optimize models using hyperparameters. As you get acquainted with practical applications in various industries, this book will inspire you to design innovative projects. Alongside topic modeling, you’ll also explore named entity handling and NER tools, modeling procedures, and tools for effective topic modeling applications. By the end of this book, you’ll have mastered the techniques essential to create applications with Gensim and integrate NLP into your business processes.
Table of Contents (24 chapters)
1
Part 1: NLP Basics
5
Part 2: Latent Semantic Analysis/Latent Semantic Indexing
9
Part 3: Word2Vec and Doc2Vec
12
Part 4: Topic Modeling with Latent Dirichlet Allocation
18
Part 5: Comparison and Applications

Introduction to natural language processing

NLP is based on 50 years of rich research into linguistics and processing algorithms. It is a branch of computer science or artificial intelligence (AI) that uses computer algorithms to analyze, understand, and generate human language data. The algorithms process human language to “understand” its full meaning. NLP has a wide range of applications that include the following:

  • Text mining: Extracting information from large amounts of text data, such as documents, emails, and social media posts.
  • Information retrieval: Searching for relevant information in large text databases. In this book, you will learn many techniques for information retrieval.
  • Question answering: Answering questions posed in natural language.
  • Machine translation: Translating text from one language to another.
  • Sentiment analysis: Identifying the tone and emotion of text data.
  • Natural language generation (NLG): Generating text that mimics human language.

As I said before, NLP has a long development history. Let’s look into it briefly.