Revisiting Tree-Sliced Wasserstein Distance Through the Lens of the Fermat– Weber Problem - Tran, Viet-Hoang; Tran, Thanh Q.; Chu, Thanh; Tran, Trung-Khang; Pham, Duy-Tung; Le, Tam; Nguyen, Tan (International Conference on Learning Representations, 2026)