Landscaper: Understanding Loss Landscapes Through Multi-Dimensional Topological Analysis. - Jiaqing Chen; Nicholas Hadler; Tiankai Xie; Rostyslav Hnatyshyn; Caleb Geniesse; Yaoqing Yang 002; Michael W. Mahoney; Talita Perciano; John F. Hartwig; Ross Maciejewski; Gunther H. Weber (CoRR, 2026)