Glossary

Nested Fitting Procedure
Hyperparameter Optimization

A two-level fitting procedure that optimises hyperparameters and learned parameter by iteratively retraining the model and validating it against performance constraint.

Training Configuration

A file that defines the initial model and training parameters for either training or the nested fitting procedure. It completely specifies the initialise model.

Nested Fitting Configuration
HPO Configuration

A file that defines the settings used for nested fitting procedure.

Hyperparameter

A model parameter chosen before regression (cutoff, number of Gaussians …).

Learned Parameter

Coefficient found by regression (\(\mathbf w\)).

Performance constraint

A measurable (physical) property used as part of the loss.

Search Space Constraint

A bound placed on a hyperparameter via an OPTIM line.