Book Image

Natural Language Processing with Flair

By : Tadej Magajna
Book Image

Natural Language Processing with Flair

By: Tadej Magajna

Overview of this book

Flair is an easy-to-understand natural language processing (NLP) framework designed to facilitate training and distribution of state-of-the-art NLP models for named entity recognition, part-of-speech tagging, and text classification. Flair is also a text embedding library for combining different types of embeddings, such as document embeddings, Transformer embeddings, and the proposed Flair embeddings. Natural Language Processing with Flair takes a hands-on approach to explaining and solving real-world NLP problems. You'll begin by installing Flair and learning about the basic NLP concepts and terminology. You will explore Flair's extensive features, such as sequence tagging, text classification, and word embeddings, through practical exercises. As you advance, you will train your own sequence labeling and text classification models and learn how to use hyperparameter tuning in order to choose the right training parameters. You will learn about the idea behind one-shot and few-shot learning through a novel text classification technique TARS. Finally, you will solve several real-world NLP problems through hands-on exercises, as well as learn how to deploy Flair models to production. By the end of this Flair book, you'll have developed a thorough understanding of typical NLP problems and you’ll be able to solve them with Flair.
Table of Contents (15 chapters)
1
Part 1: Understanding and Solving NLP with Flair
6
Part 2: Deep Dive into Flair – Training Custom Models
11
Part 3: Real-World Applications with Flair

What this book covers

Chapter 1, Introduction to Flair, provides a quick overview of NLP and its basic problems and techniques. The chapter then introduces Flair and shows how to set up your local environment.

Chapter 2, Flair Base Types, introduces Flair's basic syntax, its typical classes, and methods.

Chapter 3, Embeddings in Flair, explains the concept behind word and document embeddings and their role in NLP. It describes all the different types of embeddings available in Flair.

Chapter 4, Sequence Tagging, describes sequence tagging and its subtypes, such as named entity recognition and part-of-speech tagging. This chapter also demonstrates how to use pre-trained sequence taggers in Flair.

Chapter 5, Training Sequence Labeling Models, explains how to train, save, and use custom sequence tagging models in Flair.

Chapter 6, Hyperparameter Optimization in Flair, shows the importance of using the right hyperparameters for model training. It introduces hyperparameter optimization tools in Python and explains how to perform hyperparameter optimization in Flair.

Chapter 7, Train Your Own Embeddings, explains how to train custom embeddings in Flair and how to leverage different evaluation techniques for measuring success.

Chapter 8, Text Classification in Flair, introduces the problem of text classification. This chapter demonstrates how to use pre-trained models as well as how to train custom classifiers. It also introduces a novel approach to text classification called TARS.

Chapter 9, Deploying and Using Models in Production, talks about the challenges of deploying and using NLP models in production. This chapter demonstrates how to set up custom minimum viable product NLP services and how to host Flair models on the Hugging Face models hub.

Chapter 10, Hands-On Exercise – Building a Trading Bot with Flair, solves a real-world problem as part of a hands-on exercise by building a trading bot with Flair.