Introduction | Model-agnostic operating regions | Operating regions defined by quadratic response functions | [q_j(x) | Grid classification | [\mathcal | [\Delta_k | Conservative grid construction | Continuous refinement by greedy expansion | Verifying continuous feasibility | Optimistic grid construction | A dimension-adjusted approximation metric | The direct volume ratio[\frac{V_{\mathrm{cons}}}{V_{\mathrm{optimistic}}}]becomes increasingly difficult to interpret as the dimension (d) increases,because differences between side lengths accumulate multiplicatively in thevolume.A dimension-adjusted metric is therefore[R | Since the volume of a (d)-dimensional hyperrectangle is the product of itsside lengths, (V^{1/d}) is the geometric mean of those side lengths.Consequently,[R | Visualizing the inner and outer approximations | Adding operating-region constraints | Implementation notes