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

The real-world applications of Doc2Vec

The Doc2Vec technique has been used in many fields in which text data is the most important asset. Let me give some examples of the applications.

Job boards and professional social networks use recommender systems to recommend similar job postings. When you look for a job on LinkedIn or Indeed.com, you may see similar job postings presented next to your target job posting. It is done by Doc2Vec. Doc2Vec also is used by companies such as Airbnb and Alibaba to build their product recommendation systems [3] [4].

Legal professionals need a legal document recommendation system that can automatically pull similar judgments to prepare their arguments in the court. Legal textual information is domain specific. Dhanani, Mehta, and Rana presented that Doc2Vec can perform very rich embedding results [5] [6]. Doc2Vec was even leveraged to uncover the relationships between diseases and disease-genes associations. Gligorijevic et al. [7] found the embedding...