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Reinforcement Learning with TensorFlow
book

Reinforcement Learning with TensorFlow

by Sayon Dutta
April 2018
Intermediate to advanced content levelIntermediate to advanced
334 pages
10h 18m
English
Packt Publishing
Content preview from Reinforcement Learning with TensorFlow

The tanh function

Tanh is a continuous function symmetric around the origin; it ranges from -1 to 1. The tanh function is represented as follows:

Thus the output signals will be both positive and negative thereby, adding to the segregation of the signals around the origin. As mentioned earlier, it is continuous and also non linear plus differentiable at all points. We can observe these properties in the graph of the tanh function in the following diagram. Though symmetrical, it becomes flat beyond -2 and 2:

Now looking at the gradient curve ...

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Publisher Resources

ISBN: 9781788835725Supplemental Content