Book Image

Hands-On One-shot Learning with Python

By : Shruti Jadon, Ankush Garg
Book Image

Hands-On One-shot Learning with Python

By: Shruti Jadon, Ankush Garg

Overview of this book

One-shot learning has been an active field of research for scientists trying to develop a cognitive machine that mimics human learning. With this book, you'll explore key approaches to one-shot learning, such as metrics-based, model-based, and optimization-based techniques, all with the help of practical examples. Hands-On One-shot Learning with Python will guide you through the exploration and design of deep learning models that can obtain information about an object from one or just a few training samples. The book begins with an overview of deep learning and one-shot learning and then introduces you to the different methods you can use to achieve it, such as deep learning architectures and probabilistic models. Once you've got to grips with the core principles, you'll explore real-world examples and implementations of one-shot learning using PyTorch 1.x on datasets such as Omniglot and MiniImageNet. Finally, you'll explore generative modeling-based methods and discover the key considerations for building systems that exhibit human-level intelligence. By the end of this book, you'll be well-versed with the different one- and few-shot learning methods and be able to use them to build your own deep learning models.
Table of Contents (11 chapters)
1
Section 1: One-shot Learning Introduction
3
Section 2: Deep Learning Architectures
7
Section 3: Other Methods and Conclusion

Coding exercise

In this section, we will explore a basic one-shot learning approach. As humans, we have a hierarchical way of thinking. For example, if we see something unknown to us, we look for its similarity to objects we already know. Similarly, in this exercise, we will use a nonparametric kNN approach to find classes. We will also compare its performance to the basic neural network architecture.

kNN – basic one-shot learning

In this exercise, we will compare kNN to neural networks where we have a small dataset. We will be using the iris dataset imported from the scikit-learn library.

To begin, we will first discuss the basics of kNN. The kNN classifier is a nonparametric classifier that simply stores the training...