Book Image

Mastering spaCy

By : Duygu Altınok
Book Image

Mastering spaCy

By: Duygu Altınok

Overview of this book

spaCy is an industrial-grade, efficient NLP Python library. It offers various pre-trained models and ready-to-use features. Mastering spaCy provides you with end-to-end coverage of spaCy's features and real-world applications. You'll begin by installing spaCy and downloading models, before progressing to spaCy's features and prototyping real-world NLP apps. Next, you'll get familiar with visualizing with spaCy's popular visualizer displaCy. The book also equips you with practical illustrations for pattern matching and helps you advance into the world of semantics with word vectors. Statistical information extraction methods are also explained in detail. Later, you'll cover an interactive business case study that shows you how to combine all spaCy features for creating a real-world NLP pipeline. You'll implement ML models such as sentiment analysis, intent recognition, and context resolution. The book further focuses on classification with popular frameworks such as TensorFlow's Keras API together with spaCy. You'll cover popular topics, including intent classification and sentiment analysis, and use them on popular datasets and interpret the classification results. By the end of this book, you'll be able to confidently use spaCy, including its linguistic features, word vectors, and classifiers, to create your own NLP apps.
Table of Contents (15 chapters)
1
Section 1: Getting Started with spaCy
4
Section 2: spaCy Features
9
Section 3: Machine Learning with spaCy

Updating an existing pipeline component

In this section, we will train spaCy's NER component further with our own examples to recognize the navigation domain. We already saw some examples of navigation domain utterances and how spaCy's NER model labeled entities of some example utterances:

navigate/0 to/0 my/0 home/0
navigate/0 to/0 Oxford/FAC Street/FAC

Obviously, we want NER to perform better and recognize location entities, such as street names, district names, and other location names, such as home, work, and office. Now, we'll feed our examples to the NER component and will do more training. We will train NER in three steps:

  1. First, we'll disable all the other statistical pipeline components, including the POS tagger and the dependency parser.
  2. We'll feed our domain examples to the training procedure.
  3. We'll evaluate the new NER model.

Also, we will learn how to do the following:

  • Save the updated NER model to disk...