Fig. 3From: Optimized sparse polynomial chaos expansion with entropy regularizationPerformance comparison of LARS, Ent-LARS and HEnt-LARS w.r.t. the Ishigami model. (a) The relationship between the relative MSE and the size of DoE; (b) The relationship between the sparsity level of several methods and the size of DoE; (c) Enlarged details of the reconstructed PDFBack to article page