Yingjie Bi Ph.D. '20 wins student paper prize
Yingjie Bi Ph.D. '20 is the winner of the 2020 INFORMS Optimization Society Student Paper Prize. The paper, titled " Duality gap estimation via a refined Shapley-Folkman lemma," addresses an important question in optimization: estimating the duality gap for optimization problems with a nonconvex, separable objective. The paper was co-authored by Bi’s Cornell advisor, A. Kevin Tang, professor of electrical and computer engineering, and formed the first part of Bi's Ph.D. dissertation. It introduces new concepts, such as the k-th convex hull, which considerably refine the Shapley-Folkman lemma.... Read more