A type class that witnesses Differentiable is a differentiable expression.
Common differentiable types that supports DeepLearning are:
The Scaladoc of members of trait DeepLearning are defined inside SimulacrumIssue82WorkAround,
in case of https://github.com/mpilquist/simulacrum/issues/82
The result value of forward pass
The partial derivative for Data
Returns an asynchronous Do of forward pass, which creates a wengert list.
Returns a Future of the data of the differentiable expression.
Returns a Future that updates Weight internally used by differentiable.