AAAI · 2022
Research & journeys · Hong Kong
Xiwen Wang
I received my Ph.D. from HKUST after completing my undergraduate studies at Nanjing University. My work centers on large-scale optimization algorithms, machine learning, and embedded image processing.
Away from research, I want to see as much of the world as I can. These photographs, travel routes, and notes are my record along the way.
Selected photographs
All journeysTen photographs from my travels, from familiar cities to places far from home.
Motion
Yellowknife, over time
A few aurora timelapses from the northern end of the travel map: light, weather, and waiting compressed into short loops.
Research
Selected publications
My academic work centers on optimization algorithms, numerical computation, and structured models that stay useful at practical scale.
IEEE Transactions on Signal Processing · 2023
Efficient and Scalable Parametric High-Order Portfolios Design via the Skew-t Distribution
NeurIPS · 2023
Learning Large-Scale MTP2 Gaussian Graphical Models via Bridge-Block Decomposition
Methods I keep returning to
- Active Set Methods
- ADMM
- Block Coordinate Descent
- Fixed Point Acceleration
- Majorization-Minimization
- Projected Gradient Methods
- Quasi-Newton Methods
- Successive Convex Approximation
For papers, collaborations, or related conversations, the direct route is contact.
Writing
A few things I've been thinking about beyond my published research.