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

Understanding the trading strategy

For this hands-on exercise, we'll be implementing an interesting trading strategy that leverages several parts of the Flair NLP framework. The strategy is by no means the best and optimal trading strategy or one that is guaranteed to get you rich. It is, however, a strategy that clearly shows how Flair can be used to solve real-world problems with ease.

The strategy will help us make decisions about trading stock. There are many sources of information based on which one can make their trading decisions. A particularly interesting type of trading strategy leverages NLP to process recent news content. The underlying assumption of these trading strategies is that news articles that discuss a certain company hold important information about events that are likely to affect the company's stock price. Automated NLP strategies have a number of advantages compared to humans when it comes to investing. The advantages mostly boil down to the speed...