Book Image

Hands-On Neural Network Programming with C#

By : Matt Cole
Book Image

Hands-On Neural Network Programming with C#

By: Matt Cole

Overview of this book

Neural networks have made a surprise comeback in the last few years and have brought tremendous innovation in the world of artificial intelligence. The goal of this book is to provide C# programmers with practical guidance in solving complex computational challenges using neural networks and C# libraries such as CNTK, and TensorFlowSharp. This book will take you on a step-by-step practical journey, covering everything from the mathematical and theoretical aspects of neural networks, to building your own deep neural networks into your applications with the C# and .NET frameworks. This book begins by giving you a quick refresher of neural networks. You will learn how to build a neural network from scratch using packages such as Encog, Aforge, and Accord. You will learn about various concepts and techniques, such as deep networks, perceptrons, optimization algorithms, convolutional networks, and autoencoders. You will learn ways to add intelligent features to your .NET apps, such as facial and motion detection, object detection and labeling, language understanding, knowledge, and intelligent search. Throughout this book, you will be working on interesting demonstrations that will make it easier to implement complex neural networks in your enterprise applications.
Table of Contents (16 chapters)
13
Activation Function Timings

Developing your own TensorFlow application

Now that we've shown you some preliminary code samples, let's move on to our example project—how to use TensorFlowSharp from a console application to detect objects within an image. This code is easy enough for you to be able to add into your solution if you so desire. Just tweak the input and output names, perhaps allow for user adjusted hyperparameters, and you're off!

To run this solution, you should have the source code for this chapter downloaded from the website and open in Microsoft Visual Studio. Please follow the instructions for downloading code for this book:

Before we dive into the code, let's talk about one very important variable:

private static double MIN_SCORE_FOR_OBJECT_HIGHLIGHTING = 0.5;

This variable is our threshold for identifying and highlighting objects in our base image. At 0.5, there...