Zikang Leng
I’m a second-year Ph.D. student in Computer Science at Georgia Tech’s School of Interactive Computing, advised by Prof. Thomas Ploetz. My research is supported by the National Science Foundation Graduate Research Fellowship (NSF GRFP).
I completed my B.S. in Computer Science at Georgia Tech in 2024, where I worked with Prof. Thomas Ploetz and Prof. Hyeokhyen Kwon on generating synthetic sensor data for human activity recognition using text-based generative models. I’m broadly interested in how AI and sensing technologies can model and understand human behavior in realistic, privacy-preserving ways.
Research
My research lies at the intersection of ubiquitous computing, synthetic data generation, and large language models (LLMs). I build intelligent simulation systems where LLM-guided embodied agents generate virtual sensor data—such as motion, ambient, and wearable signals—inside realistic environments. This work aims to scale human activity recognition (HAR) beyond the limits of costly, privacy-sensitive real-world data. I’m also interested in how these generative frameworks can bridge text, video, and sensor modalities, enabling diverse and generalizable models for human-centered AI.
News
- 📖 Nov, 2025: Our paper - AgentSense: Virtual Sensor Data Generation Using LLM Agent in Simulated Home Environments have been accepted at AAAI 2026
- 🏆 Oct, 2024: Our paper - More Data for People with Disabilities! Comparing Data Collection Efforts for Wheelchair Transportation Mode Detection have been published at ISWC and has been presented at UbiComp/ISWC 2024. The paper was recognized with Best Paper Nomination.
- 🏆 Apr, 2024: Awarded the NSF Graduate Research Fellowships (GRFP), which fully-funds my PhD program for three years over a five year period.
- 🏆 Oct, 2023: Our paper - Generating Virtual On-body Accelerometer Data from Virtual Textual Descriptions for Human Activity Recognition have been published at ISWC and has been presented at UbiComp/ISWC 2023. The paper was awarded the Best Paper Honorable Mention award at UbiComp/ISWC 2023 and received news coverage from Georgia Tech.
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