Hands-On Natural Language Processing with Python

Adding two numbers

We will look at an example of adding two numbers using TensorFlow. A placeholder is a node in a TensorFlow graph to which values can be passed during a session. A session is when the graph is initialized and ready to process the values:

1. We will define two placeholders to take two integer values:

a = tf.Placeholder(tf.int32)b = tf.Placeholder(tf.int32)

2. Add these two variables and store them in a variable:

c = a + b

Note that this operation is just defined and not yet executed.

3. A dictionary of values is created to load to the placeholders. The keys are variables with placeholders themselves, as shown here:

values = {a: 5, b: 3}

4. Create a session. Once a session is initialized, the graph is loaded into the memory and ...