Shiqi Zhang cartoon avatar

Shiqi ZHANG

Postdoctoral Research Fellow at NUS

Cost-efficient algorithms for complex systems · understanding & influence for marketing and growth

// About Me

I am a postdoctoral research fellow at the School of Computing (SoC), National University of Singapore (NUS). I earned my Ph.D. at SoC, NUS in 2024. Prior to that, I completed my B.Eng. in Computer Science from Southern University of Science and Technology (SUSTech) in 2019.

My research builds cost-efficient algorithms for complex systems: keeping quality on par while cutting the cost — whether that cost is computation time or money. It runs along two threads:

  • Technical thread — cost-efficient algorithms, from graphs to efficient AI: my work has followed the growth of system complexity: starting from large-scale graphs and social networks, moving to LLM-powered systems, and now to agent teams and agent networks. Across all of them the goal is the same — provable guarantees that quality stays intact while computation and monetary cost drop by orders of magnitude.
  • Application thread — marketing and growth, built on understanding and influence: I am drawn to scenarios where an entity's behavior is first understood and then influenced — and that entity has evolved from humans to AI. For humans: understanding user behavior and modeling how people influence people — social proximity, social influence, and viral sharing. For AI: understanding how generative engines perceive users and brands, and influencing the responses they generate — generative engine optimization (GEO) and generative engine marketing (GEM).

See my publications (organized along these threads), or the blog for plain-language introductions to each work.

// Work Experience

  • Postdoctoral Research Fellow, School of Computing, National University of Singapore, Aug. 2024 – Present.
  • Research Scientist Intern, Common Data Platform (CDP), Interactive Entertainment Group (IEG), Tencent, Oct. 2021 – Oct. 2022, advised by Dr. Wenqing Lin.

// Social Media Posts

// Invited Talks

  • Applications of Social Diffusion and Influence Algorithms in Online Games
    • DataFun Summit, 2024.
    • Harbin Institute of Technology, 2024.

// Academic Services

  • Program committee member for IJCAI 2024, KDD 2025, ICDM 2026, DASFAA 2027.
  • Subreviewer or external reviewer for KDD 2022, CIKM 2022, WSDM 2023, WebSci 2024.