© Kevin Ashley 2020
K. AshleyApplied Machine Learning for Health and Fitnesshttps://doi.org/10.1007/978-1-4842-5772-2_4

4. Neural Networks

Kevin Ashley1  
Belmont, CA, USA

There’s something magical about Recurrent Neural Networks (RNNs).

—Andrej Karpathy

Defining a Neural Network

Neural nets are magical: I remember training my toy JetBot Nano robot with 100 “blocked” and “unblocked” images, and the data science toy started intelligently avoiding spots in my house. The neural net inside the bot learned to do a collision detection based on relatively small dataset I gave it to train, and it truly worked like magic! If you are an engineer used to conventional rule-based programming, just thinking of collision situations, with obstacles being of different ...

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