Sien Deng

Professor

Education

Ph.D., University of Washington — Optimization Theory and Variational Analysis

Research

Deng’s research spans optimization theory, variational analysis and their applications to nonlinear programming and equilibrium problems, with sustained contributions to error bounds, weak sharp minima, exact regularization of non-convex programs and multi-objective optimization. His current work focuses on sensitivity analysis in parametric optimization, error bounds for inequality systems and multi-stage stochastic problems. He has published in Mathematical Programming, SIAM Journal on Optimization, SIAM Journal on Control and Optimization and the Journal of Optimization Theory and Applications, and received NIU's Honors Capstone Mentor of the Year Award (2026).

Contact Us

School of Mathematical and Statistical Sciences
DeKalb, IL 60115
Andrew Ledoan, Director
aledoan@niu.edu
815-753-0566

Registration or class questions:

Anders Linner
Associate Director, Enrollment Management
alinner@niu.edu
815-753-6722

Advising