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

Understanding matching networks

Matching networks, in general, propose a framework that learns a network that maps a small training dataset and tests an unlabeled example in the same embeddings space. Matching networks aim to learn the proper embeddings representation of a small training dataset and use a differentiable kNN with a cosine similarity measure to check whether a test data point has already been seen.

Matching networks are designed to be two-fold:

  • Modeling level: At the modeling level, they propose matching networks, which uses advances made in attention and memory that enable fast and efficient learning.
  • Training procedure: At the training level, they have one condition—the distribution of training and test sets must be the same. For example, this could mean showing a few examples per class and switching the task from minibatch to minibatch, similar to how...