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

Summary

The code examples, explanations, and exercises that we covered in this chapter are a quick introduction to training sequence labeling models in Flair, and it should give you the confidence to prepare, train, validate, and use Flair models that solve real-world problems.

Also, you should now be able to have the ability to tell whether model training was a success or whether it should be restarted with different parameters. We learned that there is a large number of parameters that govern sequence labeling model training as well as the training process. There's the learning rate, the number of epochs, the optimizer type, the number of hidden RNN layers, and a long list of other parameters that will likely affect the performance of our model. In the preceding examples, we usually chose the default parameters that Flair happens to use in most of its code examples, but there's no guarantee that the default parameters are the optimal parameters for our problem. In fact...