SPADE-S: A Sparsity-Robust Foundational Forecaster. - Malcolm Wolff; Matthew Li; Ravi Kiran Selvam; Hanjing Zhu; Kin G. Olivares; Ruijun Ma; Abhinav Katoch; Shankar Ramasubramanian; Mengfei Cao; Roberto Bandarra; Rahul Gopalsamy; Stefania La Vattiata; et al. (CoRR, 2025)