For example, assuming nodes are zero-indexed starting from the top of the diagram, the weight from input node 2 to hidden node 3 has value 1.2. Each hidden and output node, but not any input node, has ...

If you examine both figures you'll see that, in essence, a neural network accepts some numeric inputs (2.0, 3.0 and 4.0 in this example), does some processing and produces some numeric outputs (0.93 ...