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

Extracting named entities

In many NLP applications, including semantic parsing, we start looking for meaning in a text by examining the entity types and placing an entity extraction component into our NLP pipelines. Named entities play a key role in understanding the meaning of user text.

We'll also start a semantic parsing pipeline by extracting the named entities from our corpus. To understand what sort of entities we want to extract, first, we'll get to know the ATIS dataset.

Getting to know the ATIS dataset

Throughout this chapter, we'll work with the ATIS corpus. ATIS is a well-known dataset; it's one of the standard benchmark datasets for intent classification. The dataset consists of customer utterances who want to book a flight, get information about the flights, including flight costs, flight destinations, and timetables.

No matter what the NLP task is, you should always go over your corpus with a naked eye. We want to get to know our corpus...