| IGP | IGP general function |
| IGP_base | UGP Class providing object with methods for fitting a GP model |
| IGP_CGP | IGP R6 object for fitting CGP model |
| IGP_DiceKriging | IGP R6 object for fitting DiceKriging model |
| IGP_GauPro | IGP R6 object for fitting GauPro model |
| IGP_GauPro_kernel | IGP R6 object for fitting GauPro model |
| IGP_GPfit | IGP R6 object for fitting GPfit model |
| IGP_GPy | IGP R6 object for fitting GPy model |
| IGP_hetGP | IGP R6 object for fitting hetGP model |
| IGP_laGP | IGP R6 object for fitting laGP model |
| IGP_laGP_GauPro | IGP R6 object for fitting laGP_GauPro model |
| IGP_laGP_GauPro_kernel | IGP R6 object for fitting laGP_GauPro_kernel model |
| IGP_LOOEC_GauPro_kernel | IGP R6 object for fitting GauPro model |
| IGP_LOOEC_laGP_GauPro | IGP R6 object for fitting laGP_GauPro model with leave-one-out error correction |
| IGP_mlegp | IGP R6 object for fitting mlegp model |
| IGP_sklearn | IGP R6 object for fitting sklearn model |
| IGP_tgp | IGP R6 object for fitting tgp model |
| predict.IGP | Predict for class IGP |