model = cmpndTieParameters(model, paramsList)

 y = expBound(x, transform)

 y = expTransform(x, transform)

 y = gradFactLinearBound(x)

 y = invLinearBound(x)

 y = linearBound(x, transform)

 y = negLogLogitTransform(x, transform)

 model = optimiseParams(component, optimiser, objective, ...
%                                 gradient, options, model, prior);

 y = sigmoidBound(x)

 y = sigmoidTransform(x, transform)