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

Chapter 10: Putting Everything Together: Designing Your Chatbot with spaCy

In this chapter, you will use everything you have learned so far to design a chatbot. You will perform entity extraction, intent recognition, and context handling. You will use different ways of syntactic and semantic parsing, entity extraction, and text classification.

First, you'll explore the dataset we'll use to collect linguistic information about the utterances within it. Then, you'll perform entity extraction by combining the spaCy named entity recognition (NER) model and the spaCy Matcher class. After that, you'll perform intent recognition with two different techniques: a pattern-based method and statistical text classification with TensorFlow and Keras. You'll train a character-level LSTM to classify the utterance intents.

The final section is a section dedicated to sentence- and dialog-level semantics. You'll take a deep dive into semantic subjects such as anaphora...