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

Chapter 10: Hands-On Exercise – Building a Trading Bot with Flair

In this final chapter, we will go through a hands-on programming exercise where we will leverage a number of Flair's pre-trained models to build a real-world application. We will build a simple trading bot that uses Flair's Named Entity Recognition (NER) and sentiment analysis tools to make trading decisions. The trading strategy consists of taking the current day's news headlines as input and using NER to determine whether the news articles are discussing a company we are interested in. We will then run sentiment analysis that helps us make a call about whether to hold, buy, or sell this company's stock.

In the first section, we will cover the details of our trading strategy by explaining the motivation behind news sentiment-based trading approaches. Then, we will implement a trading bot using Flair. We plan to wrap the book up with a Flair coding cheat sheet containing a list of the most...