4 papers
Physics-Informed Tensor Completion with Application to Distribution System State Estimation
Alexander While, Anil Aswani, Chen Chen +1
State estimation in power distribution networks often involves sparse, noisy, and heterogeneous measurements, making classical weighted least-squares methods unreliable in low-obse…
An Alternating Primal Heuristic for Nonconvex MIQCQP with Dynamic Convexification and Parallel Local Branching
Yongzheng Dai, Chen Chen
We develop a novel primal heuristic for nonconvex Mixed-Integer Quadratically Constrained Quadratic Programs (MIQCQPs). The method is built around a convex approximation that is dy…
Serial and Parallel Two-Column Probing for Mixed-Integer Programming
Yongzheng Dai, Chen Chen
Probing in mixed-integer programming (MIP) is a technique of temporarily fixing variables to discover implications that are useful to branch-and-cut solvers. Such fixing is typical…
Parallelized Conflict Graph Cut Generation
Yongzheng Dai, Chen Chen
A conflict graph represents logical relations between binary variables, and effective use of the graph can significantly accelerate branch-and-cut solvers for mixed-integer program…