Table 1 Comparison of the number of high fidelity evaluations for the GPR-Hybrid approach \(|\text{HF}_{\text{GPR-H}}|\) for different sizes of the initial training data set \(|\mathcal{T}_{\text{I}}|\), using batch size \(N_{\text{B}}=50\)
\(|\mathcal{T}_{\text{I}}|=5\) | \(|\mathcal{T}_{\text{I}}|=10\) | \(|\mathcal{T}_{\text{I}}|=30\) | |
|---|---|---|---|
\(|\text{HF}_{\text{GPR-H}}^{\text{offline}}|\) | 55 | 110 | 330 |
\(|\text{HF}_{\text{GPR-H}}^{\text{online}}|\) | 306 | 226 | 179 |
\(|\text{HF}_{\text{GPR-H}}^{\text{total}}|\) | 361 | 336 | 509 |