Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "This declares two placeholders with the names A and B; the arguments to the tf.placeholder method specify that the placeholders are of the float32 datatype."

A block of code is set as follows:

# Declare placeholders for the two matrices 
A = tf.placeholder(tf.float32, None, name='A')
B = tf.placeholder(tf.float32, None, name='B')

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "At the bottom of the stack, we have the device layer, also called the perception layer."