openalexZenodo (CERN European Organization for Nuclear Research)2026-07-24
Perfect In-Distribution Accuracy Does Not Imply Learned Physics: Measuring Cross-Family Generalization of Metamaterial Homogenization Surrogates
Machine-learning surrogates for the effective elastic properties of mechanical metamaterials are almost always trained and evaluated within a single parametric family of unit-cell geometries, with the test set drawn from the same generator as the training set. Under this protocol…