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

Using dependency relations for intent recognition

After extracting the entities, we want to find out what sort of intent the user carries – to book a flight, to purchase a meal on their already booked flight, cancel their flight, and so on. If you look at the intents list again, you will see that every intent includes a verb (to book) and an object that the verb acts on (flight, hotel, meal).

In this section, we'll extract transitive verbs and their direct objects from utterances. We'll begin our intent recognition section by extracting the transitive verb and the direct object of the verb. Then, we'll explore how to understand a user's intent by recognizing synonyms of verbs and nouns. Finally, we'll see how to determine a user's intent with semantic similarity methods. Before we move on to extracting transitive verbs and their direct objects, let's first quickly go over the concepts of transitive verbs and direct/indirect objects.

Linguistic...