Book Image

Deep Learning with PyTorch

By : Vishnu Subramanian
Book Image

Deep Learning with PyTorch

By: Vishnu Subramanian

Overview of this book

Deep learning powers the most intelligent systems in the world, such as Google Voice, Siri, and Alexa. Advancements in powerful hardware, such as GPUs, software frameworks such as PyTorch, Keras, TensorFlow, and CNTK along with the availability of big data have made it easier to implement solutions to problems in the areas of text, vision, and advanced analytics. This book will get you up and running with one of the most cutting-edge deep learning libraries—PyTorch. PyTorch is grabbing the attention of deep learning researchers and data science professionals due to its accessibility, efficiency and being more native to Python way of development. You'll start off by installing PyTorch, then quickly move on to learn various fundamental blocks that power modern deep learning. You will also learn how to use CNN, RNN, LSTM and other networks to solve real-world problems. This book explains the concepts of various state-of-the-art deep learning architectures, such as ResNet, DenseNet, Inception, and Seq2Seq, without diving deep into the math behind them. You will also learn about GPU computing during the course of the book. You will see how to train a model with PyTorch and dive into complex neural networks such as generative networks for producing text and images. By the end of the book, you'll be able to implement deep learning applications in PyTorch with ease.
Table of Contents (11 chapters)

Using pretrained word embeddings

Pretrained word embeddings would be useful when we are working in specific domains, such as medicine and manufacturing, where we have lot of data to train the embeddings. When we have little data on which we cannot meaningfully train the embeddings, we can use embeddings, which are trained on different data corpuses such as Wikipedia, Google News and Twitter tweets. A lot of teams have open source word embeddings trained using different approaches. In this section, we will explore how torchtext makes it easier to use different word embeddings, and how to use them in our PyTorch models. It is similar to transfer learning, which we use in computer vision applications. Typically, using pretrained embedding would involve the following steps:

  • Downloading the embeddings
  • Loading the embeddings in the model
  • Freezing the embedding layer weights

Let&apos...