| Oct 2026 | Upcoming: ACM SIGSPATIAL 2026 in Riverside, CA (Nov 3–6). I am serving as Demo Track Co-chair and co-organizing OASIS 2026, UMFM 2026, and GeoIndustry 2026. See you there! |
| May 2026 | Our preprint TRAJGANR on trajectory-centric urban multimodal learning via geospatially aligned neural representations is on arXiv. |
| Mar 2026 | Co-organized GeoAI symposium sessions at the AAG 2026 Annual Meeting in San Francisco, CA. |
| 2026 | Our book chapter On the Ethics of Generative GeoAI: Explainability, Bias, Hallucination, Accountability, Privacy, and Trust is published in Geography According to Foundation Models. |
| Dec 2025 | Our preprint Insight Miner: A Time Series Analysis Dataset for Cross-Domain Alignment with Natural Language is on arXiv. |
| Nov 2025 | Gemini 3 is launched. Excited to have contributed as a Gemini team member! |
| 2025 | U.S. Patent 12,462,551 Tracking Objects with Changing Appearances is granted. Two U.S. patent applications on multimodal AI for agriculture (Fusing Multimodal Environmental Data for Agricultural Inference; Multimodal Model for Agricultural Insight Mining from Time Series Agricultural Information) are published. |
| Nov 2025 | Co-organized GeoIndustry 2025 at ACM SIGSPATIAL 2025 in Minneapolis, MN, and served as a session chair at the main conference. |
| Jul 2025 | The Gemini 2.5 technical report is out. Proud to have contributed as a Gemini team member! |
| Jul 2025 | Our paper on learning when to continue search in multi-round RAG is presented at SIGIR 2025. |
| May 2025 | Our preprint CRISP on clustering multi-vector representations for denoising and pruning is on arXiv. |
| Apr 2025 | Our paper MoLA: MoE LoRA with Layer-wise Expert Allocation is presented at NAACL 2025 (Findings). |
| Mar 2025 | Co-organized GeoAI symposium sessions at the AAG 2025 Annual Meeting in Detroit, MI. |
| Feb 2025 | Our vision paper Towards the Next Generation of Geospatial Artificial Intelligence is published in the International Journal of Applied Earth Observation and Geoinformation. |
| 2025 | Two book chapters are published: The Evolution of Geospatial Artificial Intelligence (in GeoAI and Human Geography) and Trajectory Privacy Protection Approaches (in Urban Human Mobility: Practices, Analytics, and Strategies for Smart Cities). |
| Oct 2024 | Co-organized GeoIndustry 2024 at ACM SIGSPATIAL 2024 in Atlanta, GA. Served as a session chair at the main conference, and our paper SRL on general-purpose spatial representation learning appears at SIGSPATIAL 2024. |
| Oct 2024 | Our paper Best Practices and Lessons Learned on Synthetic Data is presented at COLM 2024. |
| Jul 2024 | Our paper IM-RAG on multi-round retrieval-augmented generation is presented at SIGIR 2024. |
| Apr 2024 | Co-organized GeoAI symposium sessions at the AAG 2024 Annual Meeting in Honolulu, HI. |
| Apr 2024 | 🏆 My dissertation Trajectory Privacy Protection with Geospatial Artificial Intelligence received the 2024 AAG William L. Garrison Award for Best Dissertation in Computational Geography! |
| Mar 2024 | Joined Google DeepMind and started working on Gemini post-training and evaluation. |
| Feb 2024 | Our paper Tackling Vision Language Tasks Through Learning Inner Monologues is presented at AAAI 2024, and our paper Evaluation and Enhancement of Semantic Grounding in Large Vision-Language Models receives a Spotlight at the AAAI 2024 ReLM Workshop. |
| Dec 2023 | Our PLATIAL’23 paper Here Is Not There: Measuring Entailment-Based Trajectory Similarity for Location-Privacy Protection and Beyond is on arXiv. |
| Nov 2023 | Our paper FLEE-GNN on federated graph neural networks for the geospatial resilience of food flows is presented at the ACM SIGSPATIAL GeoAI Workshop 2023. |
| Nov 2023 | Co-organized GeoIndustry 2023 at ACM SIGSPATIAL 2023 in Hamburg, Germany. |
| Oct 2023 | Our multiple papers are accepted for NeurIPS 2023 workshops as posters. |
| Oct 2023 | Our work on multimodal LLM hallucination is accepted for Google Research Conference 2023. |
| Oct 2023 | I served as the PC member of the SoLaR workshop at NeurIPS 2023. |
| Oct 2023 | Our arXiv preprint on spatial-spectral super-resolution is online. |
| Sep 2023 | Our full research paper on conditional trajectory generation is accepted for IJGIS. |
| Sep 2023 | Our paper on private&secure GeoAI foundation models is accepted for ACM SIGSPATIAL 2023. |
| Sep 2023 | Our arXiv preprint on agnosia of multimodal large language models is online. |
| Sep 2023 | I served as the PC member of the GeoAI workshop at ACM SIGSPATIAL 2023. |
| Aug 2023 | Our arXiv preprint on vision language reasoning is online and will be presented at BayLearn 2023. |
| 2023 | Our book chapter GeoAI Methodological Foundations: Deep Neural Networks and Knowledge Graphs is published in the Handbook of Geospatial Artificial Intelligence. |
| 2023 | Completed my Ph.D. in Geographic Information Science at the University of Wisconsin–Madison. Dissertation: Trajectory Privacy Protection with Geospatial Artificial Intelligence. |
| May 2023 | Our arXiv preprint on open-vocabulary attribute recognition is online. |
| May 2023 | I served as a program co-chair of the GeoIndustry workshop at ACM SIGSPATIAL 2023. |
| Apr 2023 | Our full research paper on smart foodsheds is accepted for IEEE CG&A. |
| Mar 2023 | I served as the co-organizer of the Geoprivacy and Ethics in GeoAI session at AAG 2023. |
| Mar 2023 | Our full research paper on GIS education is published on Transactions in GIS. |
| Nov 2022 | Our conference paper on geo knowledge graph is accepted for ACM SIGSPATIAL GeoKG 2022. |
| Sep 2022 | I joined Google [X] as a research scientist. Super excited to return! |
| Sep 2022 | I am honored to receive the SRGC Conference Award and the Trewartha/Odebolt Travel Award. |
| Mar 2022 | I served as the chair of the GeoAI for Social Sensing session at AAG 2022. |
| Mar 2022 | Our full research paper on spatial clustering is accepted for IJGIS. |
| Oct 2021 | Our conference paper is accepted for ACM SIGSPATIAL GeoAI 2021. |
| Sep 2021 | Our full research paper is published on Journal of Geovisualization and Spatial Analysis. |
| Jun 2021 | I have been elected as the Student Director for the AAG GISS Specialty Group. |
| May 2021 | I started my AI residency at Google [X]. Super excited to join the team! |
| Apr 2021 | Our full research paper is published on Proceedings of the National Academy of Sciences. |
| Apr 2021 | Our full research paper is published on Transactions in GIS. |
| Mar 2021 | Our conference paper on spatiotemporal contrastive learning is accepted for IEEE IGARSS 2021. |
| Jan 2021 | Our full research paper is accepted for IEEE Transactions on Intelligent Transportation Systems. |
| Dec 2020 | Our extended abstract on federated learning is accepted for Esri UC and Transactions in GIS. |
| Nov 2020 | Our extended abstract and slides are now available at AutoCarto 2020 Program. |
| Sep 2020 | Our full research paper is now published on CEUS. |
| Sep 2020 | Our full research paper is now published on JAMA Network Open. |
| Aug 2020 | I finished my internship at Sturfee Inc. I had a fruitful internship experience there! |
| Jul 2020 | Our full research paper is now published on Land Use Policy. |
| Jun 2020 | Our invited paper is now published on ACM SIGSPATIAL Special. |
| Jun 2020 | I started my internship as a research intern at Sturfee Inc., supervised by Dr. Jiangye Yuan. |
| May 2020 | Our conference paper is accepted for GIScience 2021. |
| May 2020 | Our Social Distancing Tracking Dashboard is released. Media cover: NBC, ABC, FOX |
| Feb 2020 | Our two conference papers are accepted for AutoCarto 2020. |