3 papers
math.OC2026
Enhancing Presolve in Mixed Integer Programming by Combining Probing and Dual Fixing
Zhao-Wei Wang, Wei-Kun Chen, Yu-Hong Dai
Probing and dual fixing are two powerful presolve techniques in mixed integer programming (MIP) solvers. Probing tentatively sets some binary variables to 0 or 1, applies linear co…
math.OC2026
Exploiting Variable Implications in Presolve for Mixed Integer Programming
Wei-Kun Chen, Chang-Long Li, Zhao-Wei Wang +3
Presolve for mixed integer programming (MIP) problems aims to eliminate redundant information, strengthen the formulation, and extract useful structural information for the subsequ…
cs.DM2021
A Euclidean Distance Matrix Model for Convex Clustering
Zhaowei Wang, Xiaowen Liu, Qingna Li
Clustering has been one of the most basic and essential problems in unsupervised learning due to various applications in many critical fields. The recently proposed sum-of-norms (S…