Passing batch of initial states / batch of inputs.

[rejuvyesh]

The underlying OrdinaryDiffEq.jl package supports solving from a batch of initial conditions. It's very likely I am misunderstanding something but in principle it should be possible to support the same even here. Would love to know if there is a particular reason that the dynamics and readout functions have their type signatures restricted to AbstractVector.

[slibkind]

One of the reasons that dynamics and readout have their type signatures restricted is that in order to compute the composite dynamics (e.g. the dynamics of two machines wired together), we have to assume the form of the input. However, it seems possible to change the induced_dynamics and induced_readout methods to support other types of input. Do you have an example of the kind of thing you're interested in?

[rejuvyesh]

Simplest example would be modifying the Cyber-Physical example as: https://gist.github.com/rejuvyesh/537924449c334656ac367b0cdc02e660. Essentially I have tried modifying the functions L, C, D that correspond to their respective boxes to support a batch dimension.

[slibkind]

Neat! Thanks for sharing. PR #89 adds the functionality for evaluating the dynamics of a system with batch initial conditions and inputs, although so far only for systems composed using directed wiring diagrams (which is the case in the Cyber-Physical example). Here is an example in the test file.