Xuanyu Cao（曹轩宇）
Assistant Professor
Department of Electronic and Computer
Engineering
The Hong Kong University of Science
and Technology
Clear Water Bay, Kowloon, Hong Kong
Email: eexcao@ust.hk
Address: Room 2445, Academic
Building, HKUST, Clear Water Bay, Kowloon, Hong Kong
Recruitment:
u I am looking for self-motivated PhD students with
strong mathematical background.
u Professor Vincent
Lau and I are looking for a Postdoctoral Fellow to work on
distributed/online optimization, federated learning over wireless networks, or
other related areas. Candidates should have published papers in relevant
top-tier venues.
Biography:
Since October 2021, I have been an Assistant
Professor with the Department of Electronic and Computer Engineering at The
Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong
Kong. From August 2017 to October 2021, I was successively a Postdoctoral
Research Associate with the Department of Electrical Engineering at Princeton
University (advisors: H. Vincent Poor and Junshan
Zhang), and the
Coordinated Science Lab at the University of Illinois, Urbana-Champaign
(advisor: Tamer Başar). I received the M.S. and Ph.D. in Electrical
Engineering from the University of Maryland, College Park, in 2016 and 2017,
respectively, under the supervision of K. J. Ray
Liu. Prior to
that, I got a B.S. in Electrical Engineering from Shanghai Jiao Tong
University, Shanghai, China, in 2013.
Research interests:
l Distributed/online optimization
l Federated learning over wireless networks
l Game theory and network economics
l Networks and systems
Journal
Papers
1.
Wenjing Yan, Xiaojun Yuan, and Xuanyu
Cao, “Frequency reflection modulation for reconfigurable intelligent
surface aided OFDM systems”, accepted to IEEE Trans. on Wireless
Communications, 2022.
2. Xuanyu Cao and Tamer Başar, “Decentralized online convex optimization with
feedback delays”, accepted
to IEEE Trans. on Automatic Control (regular paper), 2021.
3. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor,
“Constrained online convex optimization with feedback delays”, IEEE Trans.
on Automatic Control (regular paper), vol. 66, no. 11, pp. 5049-5064,
2021.
4. Xuanyu Cao and Tamer Başar, “Decentralized online convex optimization based
on signs of relative states”, Automatica (regular paper), vol.
129, article 109676, 2021.
5. Xuanyu Cao and Tamer Başar, “Decentralized online convex optimization with
event-triggered communications”, IEEE Trans. on Signal Processing, vol. 69, pp. 284-299, 2021.
6. Xuanyu Cao, Junshan Zhang, H. Vincent Poor, and Zhi
Tian, “Differentially private ADMM for regularized consensus
optimization”, IEEE Trans. on Automatic Control, vol. 66, no. 8,
pp. 3718-3725, 2021.
7. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “Online
stochastic optimization with time-varying distributions”, IEEE Trans.
on Automatic Control, vol. 66, no. 4, pp. 1840-1847, 2021.
8. Xuanyu Cao and K.J. Ray Liu, “Distributed Newton’s
method for network cost minimization”, IEEE Trans. on Automatic Control,
vol. 66, no. 3, pp. 1278-1285, 2021.
9. Xuanyu Cao and Tamer Başar, “Decentralized multi-agent stochastic
optimization with pairwise constraints and quantized communications”, IEEE Trans. on Signal Processing, vol. 68, pp. 3296-3311, 2020.
10. Xuanyu Cao and K.J. Ray Liu, “Dynamic sharing
through the ADMM”, IEEE Trans. on Automatic Control, vol. 65, no.
5, pp. 2215-2222, 2020.
11. Xuanyu Cao and K.J. Ray Liu, “Online convex
optimization with time-varying constraints and bandit feedback”, IEEE
Trans. on Automatic Control (regular paper), vol. 64, no. 7, pp.
2665-2680, 2019.
12. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “Data
center demand response with on-site renewable generation: a bargaining
approach”, IEEE/ACM Trans. on Networking, vol. 26, no. 6, pp.
2707-2720, 2018.
13. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “Joint
energy procurement and demand response towards optimal deployment of
renewables”, IEEE Journal of Selected Topics in Signal Processing,
vol. 12, no. 4, pp. 657-672, 2018.
14. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “A
virtual-queue-based algorithm for constrained online convex optimization with
applications to data center resource allocation”, IEEE Journal of
Selected Topics in Signal Processing, vol. 12, no. 4, pp. 703-716, 2018.
15. Xuanyu Cao and K.J. Ray Liu, “Distributed
linearized ADMM for network cost minimization”, IEEE Trans. on Signal
and Information Processing over Networks, vol. 4, no. 3, pp. 626-638, 2018.
16. Xuanyu Cao and K.J. Ray Liu, “Decentralized sparse
multitask RLS over networks”, IEEE Trans. on Signal Processing,
vol. 65, no. 23, pp. 6217-6232, 2017.
17. Xuanyu Cao, Yan Chen, and K.J. Ray Liu, “Data trading
with multiple owners, collectors and users: an iterative auction
mechanism”, IEEE Trans. on Signal and Information Processing over
Networks, vol. 3, no. 2, pp. 268-281, 2017.
18. Xuanyu Cao and K.J. Ray Liu, “A graphical
evolutionary game approach to social learning”, IEEE Signal Processing
Letters, vol. 24, no. 6, pp. 765-769, 2017.
19. Xuanyu Cao, Yan Chen, and K.J. Ray Liu, “Understanding
popularity dynamics: decision-making with long-term incentives”, IEEE
Trans. on Signal and Information Processing over Networks, vol. 3, no. 1,
pp. 91-103, 2017.
20. Xuanyu Cao, Jinbei Zhang, Luoyi Fu, Weijie Wu, and
Xinbing Wang, “Optimal secrecy capacity-delay tradeoff in large-scale mobile ad
hoc networks”, IEEE/ACM Trans. on Networking, vol. 24, no. 2, pp.
1139-1152, 2016.
21. Xuanyu Cao, Yan Chen, Chunxiao Jiang, and K.J. Ray Liu,
“Evolutionary information diffusion over heterogeneous social networks”, IEEE
Trans. on Signal and Information Processing over Networks, vol. 2, no. 4,
pp. 595-610, 2016.
22. Xuanyu Cao, Yan Chen, and K.J. Ray Liu, “A data analytic
approach to quantifying scientific impact”, Journal of Informetrics
(Elsevier), vol. 10, no. 2, pp. 471-484, 2016.
23. Xuanyu Cao, Yan Chen, and K.J. Ray Liu, “Cognitive radio
networks with heterogeneous users: how to procure and price the
spectrum?”, IEEE Trans. on Wireless Communications, vol. 14, no. 3,
pp. 1676-1688, 2015.
24. Xuanyu Cao, Xinbing Wang, and Songwu Lu, “Function
computation over heterogeneous wireless sensor networks”, IEEE Trans.
on Parallel and Distributed Systems, vol. 25, no. 7, pp. 1756-1766, 2014.
25. Xuanyu Cao, Feng Yang, Xiaoying Gan, Jing Liu, Liang
Qian, Xiaohua Tian, and Xinbing Wang, “Joint estimation of clock skew and
offset in pairwise broadcast synchronization mechanism”, IEEE Trans.
on Communications, vol. 61, no. 6, pp. 2508-2521, 2013.
Book Chapters
1.
Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “Mobile edge caching: an
optimal auction approach”, in Edge Caching for Mobile Networks,
edited by Wei Chen and H. Vincent Poor, IET Press, 2021, to appear.
Conference Papers
1.
Xuanyu Cao and Tamer Başar, “Differentially
private parameter estimation: optimal noise insertion and data owner
selection”, IEEE CDC, Jeju Island, Republic of Korea, 2020.
2. Xuanyu Cao and Tamer Başar, “Decentralized multitask recursive least
squares with local linear constraints”, Asilomar, Pacific Grove, CA, 2020.
3. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “Impact
of delays on constrained online convex optimization”, Asilomar,
Pacific Grove, CA, 2019.
4. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “On the
time-varying distributions of online stochastic optimization”, ACC,
Philadelphia, 2019.
5. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “An
optimal auction mechanism for mobile edge caching”, IEEE ICDCS,
Vienna, Austria, 2018.
6. Xuanyu Cao and K.J. Ray Liu, “An ADMM approach to
dynamic sharing problems”, CISS, Princeton, NJ, 2018.
7. Xuanyu Cao and K.J. Ray Liu, “Generic network cost
minimization: a decentralized Newton’s method”, CISS, Princeton,
NJ, 2018.
8. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “Optimal
renewable penetration in energy procurement and demand response”, IEEE
ICC, Kansas City, 2018.
9. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “A novel
online convex optimization algorithm based on virtual queues”, IEEE ICC,
Kansas City, 2018.
10. Xuanyu Cao and K.J. Ray Liu, “On the time-varying
constraints and bandit feedback of online convex optimization”, IEEE
ICC, Kansas City, 2018.
11.
Xuanyu Cao and K.J. Ray Liu, “Distributed efficient optimization for
general network cost minimization problems”, IEEE ICC, Kansas City,
2018.
12. Xuanyu Cao, Yan Chen, and K.J. Ray Liu, “An iterative
auction mechanism for data trading”, IEEE ICASSP, New Orleans,
2017.
13. Xuanyu Cao, Yan Chen, and K.J. Ray Liu, “A
game-theoretic modeling of popularity dynamics”, IEEE GlobalSIP,
Greater Washington, D.C., 2016.
14. Xuanyu Cao, Yan Chen, and K.J. Ray Liu, “Community
detection game”, IEEE ICASSP, Shanghai, 2016.
15. Xuanyu Cao, Yan Chen, Chunxiao Jiang, and K.J. Ray Liu,
“An evolutionary game-theoretic modeling for heterogeneous information
diffusion”, IEEE GlobalSIP, Atlanta, 2014.
16. Xuanyu Cao, Yan Chen, and K.J. Ray Liu, “Spectrum
trading in heterogeneous cognitive radio networks”, IEEE GlobalSIP,
Atlanta, 2014.
17. Xuanyu Cao, Jinbei Zhang, Guanglin Zhang, Luoyi Fu, and
Xinbing Wang, “Heterogeneous multicast networks with wireless helping
networks”, WASA, Yellow Mountains, China, 2012.
Teaching
ELEC 2100: Signals and
Systems (Spring 2022)
Professional Memberships and Services
n IEEE Senior Member, since 2020
n Lead Guest Editor for IEEE Journal on Selected Areas in
Communications, special issue on Communication-Efficient
Distributed Learning over Networks, 2022
n Editor for IEEE Transactions on Vehicular
Technology, since 2021
n TPC Member for ACM MobiHoc 2022
n Reviewer for IEEE Transactions on
Automatic Control, Automatica, IEEE Transactions on Signal Processing, IEEE/ACM
Transactions on Networking, IEEE Journal on Selected Areas in Communications,
IEEE Transactions on Mobile Computing, etc.