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

BERTopic for legal documents

NLP techniques can be applied to the large body of unstructured legal documents. One of the NLP applications is document grouping. Because legal documents can relate to each other in terms of topic of interest, topic modeling techniques can help legal professionals to search documents efficiently.

Background

Search engines in legal databases are transforming to advanced NLP techniques. This technology transformation will save legal professionals’ time and increase their productivity. Let’s see what the challenges are.

Questions

However, legal text processing is a challenging task because of legal-specific terminology. How to apply BERTopic modeling to tag the documents?

NLP solution

The authors of [9] applied BERTopic modeling to legal documents from the US case law dataset. They performed the standard BERTopic modeling procedure with plausible results.

Interpretability is a critical criterion for the results of a topic...