Book Image

Advanced Deep Learning with Python

By : Ivan Vasilev
Book Image

Advanced Deep Learning with Python

By: Ivan Vasilev

Overview of this book

In order to build robust deep learning systems, you’ll need to understand everything from how neural networks work to training CNN models. In this book, you’ll discover newly developed deep learning models, methodologies used in the domain, and their implementation based on areas of application. You’ll start by understanding the building blocks and the math behind neural networks, and then move on to CNNs and their advanced applications in computer vision. You'll also learn to apply the most popular CNN architectures in object detection and image segmentation. Further on, you’ll focus on variational autoencoders and GANs. You’ll then use neural networks to extract sophisticated vector representations of words, before going on to cover various types of recurrent networks, such as LSTM and GRU. You’ll even explore the attention mechanism to process sequential data without the help of recurrent neural networks (RNNs). Later, you’ll use graph neural networks for processing structured data, along with covering meta-learning, which allows you to train neural networks with fewer training samples. Finally, you’ll understand how to apply deep learning to autonomous vehicles. By the end of this book, you’ll have mastered key deep learning concepts and the different applications of deep learning models in the real world.
Table of Contents (17 chapters)
Free Chapter
1
Section 1: Core Concepts
3
Section 2: Computer Vision
8
Section 3: Natural Language and Sequence Processing
12
Section 4: A Look to the Future

Introducing AlexNet

The first model we'll discuss is the winner of the 2012 ImageNet Large Scale Visual Recognition Challenge (ILSVRC, or simply ImageNet). It's nicknamed AlexNet (ImageNet Classification with Deep Convolutional Neural Networks, https://papers.nips.cc/paper/4824-imagenet-classification-with-deep-convolutional-neural-networks.pdf), after one of its authors, Alex Krizhevsky. Although this model is rarely used nowadays, it's an important milestone in contemporary deep learning.

The following diagram shows the network architecture:

The AlexNet architecture. The original model was split in two, so it can fit on the memory of two GPUs

The model has five cross-correlated convolutional layers, three overlapping max pooling layers, three fully connected layers, and ReLU activations. The output is a 1,000-way softmax (one for each ImageNet class). The first...