Base class for covariance functions that are used in Gaussian Processes.
static InputParameters validParams()
CovarianceInterface(const InputParameters ¶meters)
FEProblemBase & _covar_feproblem
Reference to FEProblemBase instance.
CovarianceFunctionBase * getCovarianceFunctionByName(const UserObjectName &name) const
Lookup a CovarianceFunction object by name and return pointer.