Glossary of Key Terms

This glossary collects the important terms from the course in one place, with a short definition for each. The terms are in alphabetical order, and each entry links to the lesson that teaches it first, followed by the lessons that use it most. Use it to look up a term you have forgotten, then follow the first link to see the term in its full context.

A

Activation. A simple fixed rule that turns a neuron's total into the neuron's output. Activations let layers stack, because without them many layers could do no more than one layer