Xuanyu Cao

Email: eexcao@ust.hk

Address: 347 Coordinated Science Lab, 1308 W Main St, Urbana, IL 61801

This webpage will no longer be upated. Please visit my new website at HKUST.

As of October 2021, I will be joining the Department of Electronic and Computer Engineering at the Hong Kong University of Science and Technology as an Assistant Professor. Multiple openings for postdocs and students are available. Feel free to send me an email if you are interested.

I am a Postdoctoral Research Associate with the Coordinated Science Lab at the University of Illinois, Urbana-Champaign, under the supervision of Prof. Tamer Başar since June 2019. Before that, I was a Postdoctoral Research Associate with the Department of Electrical and Computer Engineering at Princeton University, working with Prof. H. Vincent Poor and Prof. Junshan Zhang from August 2017 to May 2019. 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 Prof. K. J. Ray Liu. Prior to that, I got a B.S. in Electrical Engineering from Shanghai Jiao Tong University, Shanghai, China in 2013. My research interests include optimization, game theory, signal processing, with applications to information/social networks.

Journal Papers

  1. Xuanyu Cao and Tamer Başar, “Decentralized online convex optimization with feedback delays”, accepted to IEEE Trans. on Automatic Control (regular paper), 2021.
  2. Xuanyu Cao, Junshan Zhang, and H. Vincent Poor, “Constrained online convex optimization with feedback delays”, accepted to IEEE Trans. on Automatic Control (regular paper), 2021.
  3. Xuanyu Cao and Tamer Başar, “Decentralized online convex optimization based on signs of relative states”, Automatica (regular paper), vol. 129, article 109676, 2021.
  4. Xuanyu Cao and Tamer Başar, “Decentralized online convex optimization with event-triggered communications”, IEEE Trans. on Signal Processing, vol. 69, pp. 284-299, 2021.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. 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.
  24. 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, Pacic 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.

Professional Memberships and Services

IEEE Senior Member (2020)

Editor for IEEE Transactions on Vehicular Technology, since 2021

Journal reviewer for IEEE Transactions on Automatic Control, Automatica, IEEE/ACM Transactions on Networking, IEEE Transactions on Signal Processing, IEEE Journal on Selected Areas in Communications, IEEE Transactions on Mobile Computing, IEEE Transactions on Parallel and Distributed Systems, IEEE Journal of Selected Topics in Signal Processing, IEEE Transactions on Signal and Information Processing over Networks, IEEE Transactions on Control of Network Systems, IEEE Transactions on Wireless Communications, IEEE Transactions on Communications, IEEE Transactions on Network Science and Engineering, IEEE Transactions on Cognitive Communications and Networking, IEEE Transactions on Vehicular Technology, IEEE Transactions on Neural Networks and Learning Systems, IEEE Transactions on Computational Social Systems, ACM Transactions on Sensor Networks, IEEE Signal Processing Letters, IEEE Wireless Communications Letters, IEEE Control Systems Letters, IEEE Access, IEEE Transactions on Industry Applications, IEEE Transactions on Artificial Intelligence, EURASIP Journal on Wireless Communications and Networking, Journal of Informetrics (Elsevier), Scientometrics (Springer), China Communications

Proposal reviewer for the Research Grants Council (RGC) of Hong Kong, since 2018

TPC member for CISS 2018

Teaching Assistantship

  1. Advanced digital signal processing, graduate level, UMD, Fall 2016.
  2. Elements of discrete signal analysis, undergraduate level, UMD, Fall 2014 and Fall 2013.
  3. Electronic circuit design lab, undergraduate level, UMD, Spring 2014.