3 papers
math.OC2026
CLARSTA: A random subspace trust-region algorithm for convex-constrained derivative-free optimization
Yiwen Chen, Warren Hare, Amy Wiebe
This paper proposes a random subspace trust-region algorithm for general convex-constrained derivative-free optimization (DFO) problems. Similar to previous random subspace DFO met…
math.OC2026
Relationships between full-space and subspace quadratic interpolation models and simplex derivatives
Yiwen Chen
Quadratic interpolation models and simplex derivatives are fundamental tools in numerical optimization, particularly in derivative-free optimization. When constructed in suitably c…
math.CO2025
Determining inscribability of polytopes via rank minimization based on slack matrices
Yiwen Chen, João Gouveia, Warren Hare +1
A polytope is inscribable if there is a realization where all vertices lie on the sphere. In this paper, we provide a necessary and sufficient condition for a polytope to be inscri…