@Override
public void modifyParmsForCrossValidationMainModel(ModelBuilder[] cvModelBuilders) {
_parms._overwrite_with_best_model = false;
if (_parms._stopping_rounds == 0 && _parms._max_runtime_secs == 0)
return; // No exciting changes to stopping conditions
// Extract stopping conditions from each CV model, and compute the best stopping answer
_parms._stopping_rounds = 0;
_parms._max_runtime_secs = 0;
double sum = 0;
for (ModelBuilder cvmb : cvModelBuilders)
sum += ((DeepLearningModel) DKV.getGet(cvmb.dest())).last_scored().epoch_counter;
_parms._epochs = sum / cvModelBuilders.length;
if (!_parms._quiet_mode) {
warn(
"_epochs",
"Setting optimal _epochs to "
+ _parms._epochs
+ " for cross-validation main model based on early stopping of cross-validation models.");
warn(
"_stopping_rounds",
"Disabling convergence-based early stopping for cross-validation main model.");
warn(
"_max_runtime_secs",
"Disabling maximum allowed runtime for cross-validation main model.");
}
}
/**
* Initialize the ModelBuilder, validating all arguments and preparing the training frame. This
* call is expected to be overridden in the subclasses and each subclass will start with
* "super.init();". This call is made by the front-end whenever the GUI is clicked, and needs to
* be fast; heavy-weight prep needs to wait for the trainModel() call.
*
* <p>Validate the very large number of arguments in the DL Parameter directly.
*/
@Override
public void init(boolean expensive) {
super.init(expensive);
_parms.validate(this, expensive);
if (expensive && error_count() == 0) checkMemoryFootPrint();
}