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A list of all the posts and pages found on the site. For you robots out there, there is an XML version available for digesting as well.
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Posts
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publications
A Dynamic Physical‑Distancing Model to Evaluate Spatial Measures for Prevention of COVID‑19 Spread
Published in Physica A: Statistical Mechanics and its Applications, 2021
We model how spatial layouts influence COVID-19 transmission by integrating pedestrian dynamics with epidemiological modeling, revealing design strategies that enable physical distancing while maintaining high pedestrian flow.
Recommended citation: Tianyi Xiao, Tong Mu, Sunle Shen, Yiming Song, Shufan Yang, Jie He*. (2022). A Dynamic Physical-Distancing Model to Evaluate Spatial Measures for Prevention of COVID-19 Spread. Physica A: Statistical Mechanics and its Applications, 592, 126734.
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Risk Assessment of Spatial Configuration on COVID‑19 Transmission through Social Distance Model
Published in International Conference on Canadian, Chinese and African Sustainable Urbanization (ICCCASU 2021), 2021
Conference paper detailing a social‑distance model for assessing how spatial configuration affects COVID‑19 transmission risk.
Recommended citation: Tianyi Xiao*, Tong Mu, Jie He. (2021). Risk Assessment of Spatial Configuration on COVID-19 Transmission through Social Distance Model. In Proc. of the 4th International Conference on Canadian, Chinese and African Sustainable Urbanization (ICCCASU 2021).
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Campus Epidemic Risk Assessment and the Epidemic Prevention for Campus Planning – A Case Study of Tianjin University Weijin Road Campus
Published in Tianjin University M.Sc Thesis, 2022
We propose and validate a simulation-based campus epidemic prevention planning framework that assesses COVID-19 transmission risks, optimizes spatial layouts, and enhances resilience through a hierarchical prevention system.
Recommended citation: Tianyi Xiao. (2022). Campus Epidemic Risk Assessment and the Epidemic Prevention for Campus Planning – A Case Study of Tianjin University Weijin Road Campus. Tianjin University M.Sc Thesis, Tianjin, China.
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VResin: Externalizing Spatial Memory into 3D Sketch Maps
Published in International Journal of Human-Computer Studies, 2024
We present VResin, a layer-by-layer sketch mapping interface in virtual reality that combines mid-air and surface sketching to help users create more accurate 3D spatial memory maps with less distortion and comparable completeness.
Recommended citation: Tianyi Xiao*, Kevin Gonyop Kim, Jakub Krukar, Rajasirpi Subramaniyan, Peter Kiefer, Angela Schwering, Martin Raubal. (2024). VResin: Externalizing Spatial Memory into 3D Sketch Maps. International Journal of Human-Computer Studies, 103322.
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CoNaviMap: Collective Navigation in Wilderness Search and Rescue Using Collaborative 3D Sketch Mapping
Published in Workshop on Scaling Distributed Collaboration in Mixed Reality – The Blended Realities Collective at ACM CHI 2025, 2025
We propose CoNaviMap, an AR-based collaborative 3D sketch mapping tool that enables distributed WSAR teams to intuitively share and update navigation maps in real time.
Recommended citation: Tianyi Xiao*, Sailin Zhong, Peter Kiefer, Phoebe Toups Dugas, Martin Raubal. (2025). CoNaviMap: Collective Navigation in Wilderness Search and Rescue Using Collaborative 3D Sketch Mapping. Workshop on Scaling Distributed Collaboration in Mixed Reality - The Blended Realities Collective at ACM CHI 2025.
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Sketch2Terrain: AI‑Driven Real‑Time Terrain Sketch Mapping in Augmented Reality
Published in ACM Conference on Human Factors in Computing Systems (CHI 2025), 2025
We introduce Sketch2Terrain, an AR-based generative 3D sketch mapping system that enables non-experts to efficiently create accurate, low-strain 3D maps of complex terrains.
Recommended citation: Tianyi Xiao, Yizi Chen*, Sailin Zhong, Peter Kiefer, Jakub Krukar, Kevin Gonyop Kim, Lorenz Hurni, Angela Schwering, Martin Raubal. (2025). Sketch2Terrain: AI-Driven Real-Time Terrain Sketch Mapping in Augmented Reality. In Proc. of the ACM Conference on Human Factors in Computing Systems (CHI 2025).
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3D Sketch Mapping in Extended Reality
Published in ETH Zürich Ph.D Thesis, 2026
My Ph.D. thesis at ETH Zürich develops and validates a framework for 3D sketch mapping in extended reality, covering its use cases, tool design, and empirical evaluation.
Recommended citation: Tianyi Xiao. (2026). 3D Sketch Mapping in Extended Reality. ETH Zürich Ph.D Thesis, Zürich, Switzerland. (Manuscript)
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talks
3D spatial cognition using 3D sketch mapping in VR
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This invited presentation at ECCE 2024 discusses how 3D sketch mapping in virtual reality can be used to study spatial cognition. The talk introduces VResin and Sketch2Terrain research results.
Beyond Boundaries: GeoHCI‑based eXtended Reality and Future Interactive Designs
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This talk offers a broad and forward-looking introduction to the field of Geo-HCI and eXtended Reality (AR/VR/XR). It explores the evolution of immersive technologies, highlights current trends, and discusses their potential applications across diverse domains, with a particular focus on interactive design and spatial computing for real-world impact.