TY - CONF T1 - Multi-fidelity data fusion for the approximation of scalar functions with low intrinsic dimensionality through active subspaces T2 - Proceedings in Applied Mathematics & Mechanics Y1 - 2021 A1 - Francesco Romor A1 - Marco Tezzele A1 - Gianluigi Rozza JF - Proceedings in Applied Mathematics & Mechanics PB - Wiley Online Library VL - 20 ER -