2 papers
stat.ME2026
Nonparametric Regression via Tree-Guided Feature Aggregation
Sithija Manage, Y. Samuel Wang, Martin T. Wells
In regression problems where covariates are naturally organized in a hierarchical tree structure, a central challenge is to select the resolution at which covariates enter the mode…
math.SP2021
Ambarzumian-type problems for discrete Schrödinger operators
Jerik Eakins, William Frendreiss, Burak Hatinoğlu +3
We discuss the problem of unique determination of the finite free discrete Schrödinger operator from its spectrum, also known as Ambarzumian problem, with various boundary conditio…