"ga uses only the binary tournament selection function (SelectionFcn option), and overrides any other setting."
Is there a theoretical restriction why other tournament sizes can't be used? e.g., ternary ones? or is this just the way the implementation was chosen to be?
I tried following ga.m through but eventually got stuck at gaminpl.p , so I couldn't figure out why the prevention from using other tournament sizes for the selection.
If there is a way to get around it (assuming no theoretical restriction) I'd be grateful to hear of it (supposedly, one can always use a double instead of an int and have the fitness function round to an int but that would be suboptimal).