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