Should we treat integer parameters separate from float parameters, treat them the same, or leave it to the user?

[sgbaird]

There are 10 discrete integer parameters and 10 continuous float parameters out the 20 numerical parameters.

[sgbaird]

Related to a point Jeet discussed over Slack, if we treat the integer parameters as discrete parameters, then there's some question about how to implement linear inequality constraints. If we treat the integer parameters as continuous, this introduces flat plateaus into the model space. I'm unsure if that's a helpful response surface feature relative to real materials optimization tasks.