/**
* @param hypers A set of hyper parameter values
* @return A Future of a model run with these parameters, typically built on demand and not cached
* - expected to be an expensive operation. If the model in question is "in progress", a 2nd
* build will NOT be kicked off. This is a non-blocking call.
*/
private ModelBuilder startBuildModel(MP params, double[] hypers) {
if (model(hypers) != null) return null;
ModelBuilder mb = getBuilder(params, hypers);
mb.trainModel();
return mb;
}
