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

Annotating and preparing data

The first step of training a model is always preparing training data. You usually collect data from customer logs and then turn them into a dataset by dumping the data as a CSV file or a JSON file. spaCy model training code works with JSON files, so we will be working with JSON files in this chapter.

After collecting our data, we annotate our data. Annotation means labeling the intent, entities, POS tags, and so on.

This is an example of annotated data:

{
"sentence": "I visited JFK Airport."
"entities": {
             "label": "LOC"
             "value": "JFK Airport"
}

As you see, we point the statistical algorithm to what we want the model to learn. In this example, we want the model to learn about the entities, hence, we feed examples with entities annotated...