Workshops

ACM SIGSPATIAL 2026 Workshops

The following workshops have been accepted for ACM SIGSPATIAL 2026. All workshops will be held on November 3rd, 2026, at the venue of the main conference. Each workshop's program, as posted on its website, is listed under its entry below; click a workshop in the table for a quick view.

Full-Day Workshops · Half-Day Workshops

Full-Day Workshops

The 9th International Workshop on AI for Geographic Knowledge Discovery (GeoAI 2026)

Organizers: Sam Arundel (U.S. Geological Survey), Song Gao (University of Wisconsin, Madison), Dalton Lunga (Oak Ridge National Laboratory), Gengchen Mai (The University of Texas at Austin), Bruno Martins (University of Lisbon, Portugal), Shawn Newsam (University of California, Merced), Lexie Yang (Oak Ridge National Laboratory), Di Zhu (University of Minnesota, Twin Cities)

Program

08:30–08:40	Opening Remarks Workshop Organizers
08:40–08:55	Do Large Language Models Support Geospatial Reasoning? Nicole Schneider, Nandini Ramachandran, Kent O'Sullivan and Hanan Samet
08:55–09:10	Evaluating the Trustworthiness of LLM-Based Geocoding: Accuracy, Reliability, Robustness, and Reproducibility Shiqi Lu, Yanbo Pang and Yoshihide Sekimoto
09:10–09:25	Semantic descriptors from LLMs improve spatial generalization in property price prediction Béla Bálint, József Pintér, Flórián Kaczúr, Péter Juhász and Roland Molontay
09:25–09:40	StreetRAG: Comparing Image- and Caption-Based Indexing for Urban Street-Level Retrieval Wencong Cui, Boyuan Guan, Chen Chen, and Tianyang Chen
09:40–09:50	LLM-Based Next Locality and Activity Prediction Using Privacy-Enhanced Trajectories George Rosario Jagadeesh and Kai Xin Thia
09:50–10:00	GeoAmbiguity-200: A Benchmark for Geospatial Ambiguity Resolution Sumit Sen
10:00–10:30	Coffee Break
10:30–10:45	GeoLEON-CLIP: Graph-Anchored Multimodal Contrastive Learning for Geographic Region Representation Radoslaw Malek, Szymon Soltysiak, Aleksandra Kawala-Sterniuk and Piotr Szymański
10:45–11:00	How Geographic Information Influences Vision-Language Model Judgments of Urban Scenes Yingjing Huang, Krzysztof Janowicz, Mina Karimi, Zilong Liu, Songlin Wang, Alexandra Fortacz-Lazan and Annika Suess
11:00–11:15	Parameter-Efficient Fine-Tuning and ViT-Adapter Necks for Fallow Field Detection with Prithvi-EO-2.0 Sk Muhammad Asif and Orhun Aydin
11:15–11:30	SACL: Spatially-Aware Contrastive Learning for Novel Class Detection in Remote Sensing Imagery Quang Tien Tran, Michela Bertolotto and Nhien-An Le-Khac
11:30–11:45	Sample-Stability-Guided Environmental Regime Discovery from Multivariate Satellite–Meteorological Time Series Mridula Mavuri, Subhajit Chakrabarty, Devesh Sarda and Udaysinh Rathod
11:45–12:00	CONFLUENCE: Does Cross-Scale Graph Attention Help Watershed Vegetation Forecasting? Andrew Ma
12:00–12:10	EviDiff-ST: Reconstruction-Free Spatiotemporal Forecasting over Unobserved Regions Dapei Chen and Di Zhu
12:10–12:20	Where Does GeoAI Add Value in Crosswalk Mapping from Open Geospatial Data Shun Nakayama
12:20–12:30	Session 2 Q&A and open discussion Session chair & presenters
12:30–14:00	Lunch Break
14:00–14:15	GeoFM2Flow: Generating Human Mobility Flows from Geospatial Foundation Model Embeddings Zhongfu Ma, Meicheng Xiong and Di Zhu
14:15–14:30	GeoAI-Act: GeoAI-based Activity Inference from GPS Trajectories Shangkun Jiang, Mustafa Sameen, Ally Recalde and Xilei Zhao
14:30–14:45	Geospatial Optimization for Food and Beverage Facilities Considering Cross-Industry Integration: A Coffee Shop Case Study Junhao Chen, Shaohua Wang, Hao Wang, Yixi Chen, Yandi Lin, Fanghan Dang, Meiqi Wang, Jiayu Ren and Xinhao Hu
14:45–15:00	Learning to Edit Geospatial Vectors: A Graph-Based Approach to Building Aggregation Yanning Wang, Zhiyong Zhou, Mengni Yu, Zhuoyu Liu and Yu Feng
15:00–15:10	No Safe Words: Building Shortcut-Resistant Safety Guardrails for Geographically Grounded Environmental Advice Maria Perles, Oleksandr Slyvka and Pavel Kordík
15:10–15:20	Caminhante: A Location-Aware Contextual Chatbot for Interactive Hiking Francisco Plácido, Armanda Rodrigues, Cédric Grueau and João Magalhães
15:20–15:30	Operationalising Shared Spatial Intelligence through TangibleGeoAI: An Experience–Encoding Mediation Loop for Participatory Planning Workshops Wanglin Yan, Shun Nakayama, Takahiro Kanamori and Akihiro Oba
15:30–16:00	Coffee Break
16:00–16:30	Session 3 Q&A and closing remarks, attendee social

From the workshop website; check there for last-minute changes.

The 5th ACM SIGSPATIAL International Workshop on Spatial Big Data and AI for Industrial Applications (GeoIndustry 2026)

Organizers: Emre Eftelioglu (Amazon), Yiqun Xie (University of Maryland), Jinmeng Rao (Google DeepMind), Song Gao (University of Wisconsin–Madison), Heba Aly (Amazon), Yan Li (Amazon)

Program

08:30–08:35	Opening Remarks
08:35–09:20	Keynote: The Foundations of Urban Mobility Foundation Models Shushman Choudhury (Google Research)
Session 1: Mobility & Spatio-Temporal Representation Learning
09:20–09:35	Bringing GeoAI to the Planning Table: Engineering and Deploying TangibleGeoAI Shun Nakayama, Nozomi Ishiguro, Hikaru Ashida, Takahiro Kanamori and Wanglin Yan
09:35–09:50	Trustworthy Geospatial AI Workflows: Reproducible Maritime Analytics and Forecasting on Open-Source AIS Data Divya Acharya, Thomas M Roehr and Arnaud Gotlieb
09:50–10:00	Trip-Purpose Inference with Location Trajectories and Short User Memos: Evaluating Multimodal Complementarity Mizuki Miura, Zhixiong Chen and Daisuke Kamisaka
10:00–10:30	Coffee Break
Session 2: Location Intelligence & Site Planning
10:30–10:45	A Geospatial Network Planning Framework for Grocery Stores Zhen Li, Yuchen Luo, Gianluca Grilli, Bruno Lopez-Videla, James Domingo, Ryan Kasserra and Louise Lindegaard
10:45–11:00	Logistics-Oriented Dual-Radius Incremental Siting Model: A Case Study of Rougamo Outlets in Xi’an Xiaoyu Fan, Haojian Liang, Yang Ding, Fanghan Dang, He Li, Huiwen Deng, Nanmu Su, Xiaoxiao Guo and Shaohua Wang
11:00–11:15	Spatial Information as Proxy for Synthesizing Customer Brand Perception Jiaxin Du, Liye Ma and Baohong Sun
11:15–11:30	What Survives a Matched Backtest? Auditing Spatiotemporal Evaluation Leakage in UK House Price Prediction Nakul Gupta and Shreya Singla
Session 3: Agentic & Explainable GeoAI
11:30–11:45	Agentic AI Orchestration Framework for Spatial Intelligence: Supply Chain Deployment Constantinos Papantoniou and Brian Hilton
11:45–12:00	GeoNatureAgent (GNA): A Framework and Benchmark for Pre-Production Evaluation of Tool-Using Agents on Geospatial and Environmental Tasks Gabriel Diaz Ireland, Diego Prieto Herráez, Mario García Peces, Javier Velázquez Saornil, Benjamin Zaitchik and Devika Jain
12:00–12:15	A Multi-Agent Text-to-SQL Chatbot over Spatio-Temporal Transit Data Luca Fantin, Marco Antonelli, Daniele Irto, Bruno Zamengo, Denis Cappellari and Francesco Silvestri
12:15–12:30	EXPERT-FR: Explainable AI for Emergency Response Time Prediction in Urban Fire Rescue Operations Dilli Prasad Sharma, Nasim Beigi-Mohammadi, Praveen Soni, Rob Madro, Phil Emmenegger, Carlos Tobar, Xiaoqi Tan and Alberto Leon-Garcia
12:30–14:00	Lunch Break
14:00–14:45	Keynote: City Intelligence: When Cars Write the Rules of the Road Zhenhui (Jessie) Li (The Hong Kong Polytechnic University)
Session 4: Routing & On-Demand Mobility
14:45–15:00	Scalable Route and Shared-Stop Optimization for On-Demand Single-Destination Shuttles Yonghwan Kim, Kazuho Takahashi and Daisuke Yamamoto
15:00–15:15	Prompt-Configurable Vehicle Routing for Industrial Logistics Hadi Aghazadeh and Xin Wang
15:15–15:30	RHPS: A Production-Validated Marketplace Simulator for Spatial Decision-Making at Scale Haifeng Yuan, Yongjian Tek, Zuwei Li, Lam Raga Anggara Markely, Chek Hui Ho and Alexandre Montecucco
15:30–16:00	Coffee Break
Session 5: Geospatial Data, Infrastructure & Spatio-Temporal Modeling
16:00–16:15	The Circuity of North American Rideshare Trips James Murphy
16:15–16:30	Intersection Is Not Enough: Bridging the Research–Practice Gap in Building Footprint Conflation Florian Nachtigall, Felix Wagner, Jakob Napiontek and Felix Creutzig
16:30–16:45	Reconstructing Missing Dwelling Area from Census Room Counts and Overhead Imagery for Residential Occupancy Modeling Carson Woody and Sarah Walters
16:45–17:00	ROS2 to GIS: An Interoperability Layer for Robotic Spatial Big Data Pipelines Maciej Krupka, Antoni Sopata, Jakub Pilarski, Łukasz Grobelny, Robert Wrembel, Piotr Skrzypczynski, Simon Baud, Anouk Jégo-Dufau and Jean-Paul Kasprzyk
17:00–17:15	Spatio-Temporal Dual Link Prediction from Hydrogen Bond Formation in Molecular Dynamics Md Hasan Anowar, Goce Trajcevski, Sohail Murad, Cynthia Jameson and Ashfaq Khokhar
17:15–17:25	Heat Exposure as a Routing Attribute: Integrating Satellite Thermal Layers into Trip-Planning Data Pipelines Hamid Norouzi
17:25–17:35	The Rise of Personal Trackers as the Next Infrastructure for Ubiquitous Positioning Mohamed Ibrahim, Hamada Rizk and Moustafa Youssef
17:35–17:55	Panel Discussion
17:55–18:00	Closing Remarks

From the workshop website; check there for last-minute changes.

The 2nd ACM SIGSPATIAL International Workshop on Quantum Computing and Quantum-Inspired Technologies for Spatial Data Systems and Applications (Q-Spatial 2026)

Organizers: Moustafa Youssef (American University in Cairo), Ibrahim Sabek (University of Southern California), Amr Magdy (University of California, Riverside)

Program

08:00–08:25	Registration
08:25–08:30	Opening Remarks
08:30–09:30	Keynote: Fundamental Physics and Precision Measurements in Space Dr. John Callas (NASA Jet Propulsion Laboratory)
09:30–10:00	Quantum Awareness: Introduction to Q-World; Introduction to IEEE Quantum Week
10:00–10:30	Coffee Break
10:30–12:30	Paper Session Quantum Machine Learning for Satellite Trajectory Prediction: A 3-Axis Specialized Quantum Regressor — Mohamed Masmoudi, Fatma Masmoudi and Abdulaziz Alenazi The Quantum Geometry® Grand Challenge: A Multiyear Prize and Benchmark Program for Quantum Computing in Geometry, CAD, GIS, and Meshing — W. Randolph Franklin The Hidden Cost of Quantum Spatial Computing: From Oracle Complexity to Circuit Complexity — Po-Yu Yeh, Tzu-Cheng Chang, Xiao Huang and Chun-Hsiang Chan Entanglement-Aware Adaptive Routing for Optimizing Distributed Quantum Computing over Quantum Interconnect Networks — Tianrong Ding Towards Quantum Range Query for Spatial-Temporal-Semantic Trajectory Data — Hao Li, Zhihang Liu, Liwei Zou, Jinlin Wu and Wufan Zhao
12:30–13:30	Lunch Break (on your own)
14:00–15:00	Keynote: Bridging Quantum Machine Learning and Spatial Systems: Harnessing Quantum Computing for Geographic and Spatial Applications Dr. Thilanka Munasinghe (Rensselaer Polytechnic Institute)
15:00–15:30	Invited Talks (Main Conference Guests) Quantum Optimization in Spatial Computing: A Vision — Amr Magdy, Ibrahim Sabek and Moustafa Youssef Quantum Spatial Regionalization — Yunhan Chang
15:30–16:00	Coffee Break
16:00–16:15	Invited Talk (Main Conference Guests) Geospatial Intelligence for Quantum Communication Networks — Yaron Kanza, Divesh Srivastava and William Trost
16:15–17:45	Panel: Quantum Technologies in Spatial Computing: The Next Five-Year Horizon Moderator: Amr Magdy. Panelists: Thilanka Munasinghe, Yaron Kanza and Ibrahim Sabek
17:45–18:00	Closing Remarks

From the workshop website; check there for last-minute changes.

The 2nd ACM SIGSPATIAL International Workshop on Urban Mobility Foundation Models (UMFM 2026)

Organizers: Gengchen Mai (University of Texas at Austin & Google Research), Maria Despoina Siampou (Google Research & University of Southern California), Jinmeng Rao (Google DeepMind)

Program

08:50–09:00	Opening Remarks Gengchen Mai
09:00–09:50	Keynote: From Population Dynamics Embeddings to Autonomous Planetary Prediction: Foundation Models and Agentic Reasoning in Google Earth AI Gautam Prasad (Google Research)
09:50–10:00	Break
Full Papers – Session A
10:00–10:15	The Impact of Demographic and Home-Location Conditioning on Urban Mobility Generation
10:15–10:30	GAUGE: How Large Language Models Recover Mobility Descriptors from Individual Records
10:30–10:45	Street-Level Imagery as a Transferable Basis for Urban Mobility Prediction
10:45–11:15	Coffee Break
11:15–11:45	Industry Talk: Agentic Map Data Maintenance Vishal Kumar, Shaishav Maisuria and Li Xu (Amazon)
Full Papers – Session B
11:45–12:00	A Graph Neural Network Surrogate Model for Incident-Based Travel Time Prediction Under Limited Sensor Data
12:00–12:15	RectifiedTraj Revisited: An Expanded Evaluation of Map-Free Causal GPS Trajectory Denoising
12:15–12:30	Diagnosing Foundation-Model Transfer in Sparse Spatio-Temporal Allocation
12:30–14:00	Lunch Break
14:00–14:30	Research Talk: Beyond Prediction: Generate, Imagine, and Act with World Models for Mobility Networks Zhaonan Wang (NYU Shanghai)
14:30–15:00	Industry Talk: Trajectory-Free Crowd Mobility Models in Practice Yaron Kanza (AT&T)
15:00–15:30	Coffee Break
Short Papers
15:30–15:40	Long Trajectories, Fewer Points, Same Embeddings?
15:40–15:50	Road Generalization Using Stroke-Based Deep Reinforcement Learning
15:50–16:00	Activity-Space States: Towards State Representations for Mobility World Models
16:00–16:10	Seekr: Configurable Cognitive Scaffolding for Vision-Language Foundation Models in Embodied Navigation
Vision Papers
16:10–16:15	Towards Routing Foundation Models for Commercial Vehicles
16:15–16:20	Simulation as Pretraining: Toward System-Level Foundation Models for Urban Mobility and Energy
16:20–16:25	Closing Remarks Gengchen Mai

From the workshop website; check there for last-minute changes.

The 5th ACM SIGSPATIAL International Workshop on Searching and Mining Large Collections of Geospatial Data (GeoSearch)

Organizers: Hao Li (National University of Singapore), Abhishek Potnis (Oak Ridge National Laboratory), Nicole Schneider (University of Maryland), Lukas Arzoumanidis (HafenCity University Hamburg), Martin Werner (Technical University of Munich), Wenwen Li (Arizona State University)

Program

09:00–09:10	Opening Remarks
09:10–09:30	Co-Location Similarity Search with Semantic Constraints Mattis thor Straten, Christian Beth, Yannick Wölker, Matthias Renz
09:30–09:50	Geolocalizing Videos from Place Name Mentions Mehak Gupta, Nicole Schneider, Hanan Samet
10:00–10:30	Coffee Break
10:30–11:00	Keynote: Geo-knowledge Guided LLM Agent Frameworks for Complex Geospatial Question Answering Gengchen Mai
11:00–11:20	HadathSQL: Bringing Event Detection to SQL Databases Rami Alghamdi, Mohamed Mokbel, Thamir Qadah
11:20–11:40	Rank-Range Region Query over Geo-Textual Data Xiyao Li, Ying Cai, Soamar Homsi
11:40–12:00	Multilingual Spatial Keyword Search: The Scalability Opportunities and Challenges Laila Abdelhafeez, Amr Magdy, Vassilis J. Tsotras
12:00–12:20	Time Duration-constrained Spatial Range Search Naoya Ehara, Daichi Amagata
12:20–12:40	Cache-Efficient Candidate Filtering for Geospatial Search with Spatial-Blocked Bloom Filters Moritz Laass, Paul Walther, Martin Werner
12:40–13:30	Lunch Break
13:30–13:45	Multimodal Geospatial Retrieval for Knowledge Discovery: Component-Level Evidence from a Deployed Search System Yunfan Kang, Erick Li, Furqan Baig, Wei Hu, Alexander Michels, Anand Padmanabhan, Shaowen Wang
13:45–14:00	Hierarchical In-Context Learning with LLM for Text Linking on Historical Maps Richard Hao, Yijun Lin
14:00–14:15	Graph-ENC Search: GNN-Based Retrieval of Safety-Relevant Nautical Chart Changes Abhishek Potnis, Jacob Arndt, Alexandre Sorokine
14:15–14:30	When Satellite and Street Views Disagree: Cross-View Complementarity in Disaster Damage Assessment Yifan Yang, Lei Zou
14:30–14:45	AGQA: Administrative Geometry Question Answering (Demo) Felix Disselkamp, Eva Langstein, Anne Staskiewicz, Ralf Klammer, Auriol Degbelo
14:45–15:00	Designing Systems for Spatial Information Search through Intent-Based Outcome Specification: Open Challenges and Opportunities Auriol Degbelo
15:00–15:15	GeoLoss: A Spatial-Explicit Contrastive Loss Function for Visual Geolocalization Liwei Zou, Wufan Zhao, Hao Li
15:15–15:30	Best Paper Award and Group Photos
15:30–16:00	Coffee Break and Informal Networking

From the workshop website; check there for last-minute changes.

The 1st ACM SIGSPATIAL Student Challenge on Open Agents with Spatial Intelligence for Social Good (OASIS 2026)

Organizers: Jinmeng Rao (Google DeepMind), Hongxu Ma (Google DeepMind), Neha Arora (Google Research), Lauren Bennett (Esri), Song Gao (University of Wisconsin-Madison), Wenwen Li (Arizona State University), Zhenlong Li (Pennsylvania State University), Krzysztof Janowicz (University of Vienna)

The workshop site lists the challenge as 08:30–16:50 but has not posted a detailed program.

The 4th ACM SIGSPATIAL International Workshop on Advances in Urban-AI (UrbanAI 2026)

Organizers: Haoran Niu (Oak Ridge National Laboratory), Hao Xue (The University of New South Wales), Femi Omitaomu (Oak Ridge National Laboratory), Liang Zhao (Emory University), Yanjie Fu (Arizona State University), Yao-Yi Chiang (University of Minnesota), Hiba Baroud (Vanderbilt University), Min Namgung (University of Minnesota), Yijun Lin (University of Minnesota)

Program

09:00–09:10	Opening Remarks
Session I — Urban Traffic and Transport Analytics
09:10–09:25	Adapting a Large Language Model Crash-Severity Pipeline to Tennessee: Performance Across Sampling Strategies Abhilasha Saroj, Pranav Govindu, Bharat Sharma, Usman Ahmed
09:25–09:40	Scalable Origin-Destination Travel Time Estimation via Landmark Approximation and Neural Residual Correction Joon-Seok Kim, Lina Li, Jooyoung Yoo, Kiara Ha, Parker Wischhover, Hossein Amiri, Taozhi Chen, Andreas Züfle
09:40–09:55	High-Resolution Citywide Traffic Speed Estimation from Bus Probes Observations with a Gated Dual-Branch GCNN Bahare Salehi, Mahmoud Sakr
09:55–10:10	Causal Machine Learning Analysis of How Ride-Hailing Uses Electric vs. Gasoline Vehicles Xiaokang Chen, Wenbo Zhang, Yongqi Zhang, Tianqi Gu, Zhuo Chen
10:10–10:25	Illegal Parking Prediction with Street-View Visual Semantics and Spatio-Temporal Graph Learning Seohyeon Yoon, Youngok Kang
10:25–10:40	Coffee Break
Session II — Urban Mobility, Navigation and Digital Twins
10:40–10:55	Constraint-Guaranteed Discrete Diffusion for the Completion of Urban Itineraries I-No Chu, Yi-Chung Chen, Chang-Hung Shih, Chee-Hoe Loh
10:55–11:10	Learning Direction-Aware Metro Demand Graphs from Floor-Level Building Semantics Hyunji Kim, Jina Kim, Eunil Park, Yao-Yi Chiang
11:10–11:25	Barometric-Assisted Real-Time Map Matching at Multilevel Venues Xinyu Zhang, James Murphy
11:25–11:40	Simulation-Driven Vehicular Traffic Data Augmentation Through Virtual Sensing Davide Guastella, Eladio Montero-Porras, Evangelos Pournaras, Gianluca Bontempi
11:40–11:50	Living Urban Digital Twins: Agentic and Neuro-Symbolic AI for Semantic 3D City Modeling Lukas Arzoumanidis, Nicole Schneider, Huynh Nguyen, Hanan Samet, Youness Dehbi
11:50–13:30	Lunch Break
Session III — Urban Governance, Planning and Spatial Data
13:30–13:45	From Regional Mobility Demand to Downtown Traffic: Data-Grounding and Conversational Analytics for Urban Simulation Flavia Sparacino
13:45–14:00	UrbanAdmit: An Evidence-to-Action Governance Framework for Urban AI Uday Kanagala
14:00–14:15	Beyond the City-Wide Score: Disaggregating GeoAI Building Footprint Accuracy by Urban Form Capucine Riom, Isabelle Tingzon, Caroline Gevaert, Abhas Jha, Edward Anderson
14:15–14:30	Freeze, Validate, Report: Auditing Urban Station Plans with Common Evidence Julian Teusch, Oliver Keszöcze
14:30–14:45	AI for Urban Buildability: An Atlanta Zoning Case Study on Where Citation-Bound Verification Fails Sam Duong, Ingeborg Rocker
14:45–15:00	Coffee Break
Session IV — Urban Resilience, Infrastructure and Emerging AI
15:00–15:15	Spatial Suitability and Agentic AI Framework for Floating Nuclear Power Plants in the Northeastern U.S. Saim Joardder, Marc Fialkoff, Melissa Dumas
15:15–15:30	A Scalable AI Platform for Hyperlocal Urban Heat Mapping Xiaojiang Li
15:30–15:45	Spatially transferable reinforcement learning for on-demand drone delivery dispatching and repositioning Luyun Zhao, Kaihang Zhang, Zhan Zhao
15:45–16:00	Toward Emotion Deepfake Detection for Urban Emergency Communications: A Multi-Representation Study on EmoFake Kayode Oyeniran, Haoran Niu, Yang Chen, Christin Salley, Olufemi Omitaomu
16:00–16:15	Municipal Housing Condition Assessment Automation Using Deep Learning Anneka Singh, Aditya Balu, Anuprit Minhas, Baskar Ganapathysubramanian
16:15–16:25	Coupling AI and Physics-based Models for Climate Risk: An Urban Flood Perspective Yingqiang Xu, Hiba Baroud
16:25–16:30	Closing Remarks

From the workshop website; check there for last-minute changes.

Half-Day Workshops

The 3rd ACM SIGSPATIAL International Workshop on Geospatial Anomaly Detection (GeoAnomalies 2026)

Organizers: Peer Kroger (University of Kiel), Joon-Seok Kim (Emory University), Khurram Shafique (Novateur), Carola Wenk (Tulane University), Andreas Zufle (Emory University)

Program

15:30–15:35	Opening Remarks
15:35–16:25	Keynote: What Mobility Anomaly Detectors See Depends on Context Yao-Yi Chiang (University of Minnesota)
16:25–16:45	Coffee Break
16:45–17:03	SF-ANOMALIES: A Mobility Dataset for Behavioral and Contextual Anomaly Detection Mauryan Uppalapati, Carola Wenk
17:03–17:21	DeTraj: A Trajectory Degradation Module for Robust Geospatial Anomaly Detection Shuai An, Chris Stanford, Shashi Shekhar
17:21–17:39	LIAD: Lightweight Interpretable Mobility Anomaly Detection via Agent-Adaptive Behavioral Deviations Chanuka Ravishan Algama, Erfan Hosseini Sereshgi, Carola Wenk
17:39–17:51	Agentic-LIAD: Multi-Agent Reasoning over Behavioral Evidence for Mobility Anomaly Detection Chanuka Ravishan Algama, Sachith Gunasekara, Carola Wenk
17:51–18:09	Compactness-Based Shape Profiles for Anomaly Detection in Spatial Features Majid Mirzanezhad, Batuhan Tanrikulu
18:09–18:15	Closing Remarks

From the workshop website; check there for last-minute changes.

The 2nd ACM SIGSPATIAL International Workshop on Geospatial Computing for Public Health (GeoHealth 2026)

Organizers: Taylor Anderson (George Mason University), Su Yeon Han (Texas State University), Joon-Seok Kim (Emory University), Hao Xu (Hong Kong University of Science and Technology), Andreas Zufle (Emory University)

Program

12:00–12:06	Opening Remarks
12:06–12:18	Spatial Accessibility and Heat Vulnerability for Cooling-Center Planning in New York City Onyedikachi Okeke, Su Yeon Han
12:18–12:30	Beyond Distance and Time: Health-Aware Urban Mobility for Vulnerable Populations Federica Rollo, Laura Po, Letizia Cremonini, Teodoro Georgiadis, Marianna Nardino, Edoardo Fiorillo, José Ramón Ríos Viqueira
12:30–13:30	Lunch (on your own)
13:30–13:48	Fleet Capacity and Operational Coverage in Autonomous Transportation for Rural Healthcare Access Joon-Seok Kim, Su Yeon Han, Taozhi Chen, Jooyoung Yoo, Youjeong Kang, Andreas Züfle
13:48–14:06	Human Mobility Networks and COVID-19 Prediction: a Feature-aware Weighted Preferential Attachment approach and a Case Study for New York State Jie He, Andrew Crooks
14:06–14:56	Keynote: Spatial Optimization to Maximize Child Survival Through Redistribution of Care and Prioritized Upgrades to Emergency Department Pediatric Readiness Ran Wei
14:56–15:14	Towards Developing a Geospatially-Aware Explainable Non-Communicable Disease Prevention Chatbot Nicole Schneider, Avik Das, Nandini Ramachandran, Hanan Samet
15:14–15:26	A Mobility-Aware Synthetic Dataset for Wastewater Epidemiology: Simulating Where and When People Poop Hossein Amiri, Mohammad Hashemi, Akshay Deverakonda, Joon-Seok Kim, Yuke Wang, Andreas Züfle
15:26–15:30	Closing Remarks

From the workshop website; check there for last-minute changes.

The 9th ACM SIGSPATIAL International Workshop on GeoSpatial Simulation (GeoSim 2026)

Organizers: Joon-Seok Kim (Emory University), Licia Amichi (Oak Ridge National Laboratory), Taylor Anderson (George Mason University), Andreas Zufle (Emory University)

Program

08:00–08:05	Opening Remarks
08:05–08:15	When Mobility Data Gets Noisy: The Need for Simulating Realistic Noise Models Erfan Hosseini, Lance Kennedy, Yueyang Liu, Mauryan Uppalapati, Carola Wenk, Andreas Züfle
08:15–08:35	Editable Map-Conditioned Trajectory Generation for Human Mobility Simulation Takayuki Mizuno, Shouji Fujimoto, Mikito Hiruki, Atushi Ishikawa
08:35–08:50	GeoRecSim: A Multi-Agent Testbed for Recommender System Design Nahush Shrivatsa, Ekin Ugurel, Takahiro Yabe
08:50–09:10	GeoTrack: Projective Trajectory Mapping in Ego-Centric Geosimulation Kaishuu Shinozaki-Conefrey, Ryan Kim, Jiayi Hao, Paul Torrens
09:10–09:25	Geosimulation by Illusion: an Anchorpoint Hypothesis for Redirected Walking Through Expansive Virtual Geographies Paul Torrens, Ryan Kim, Finley Torrens, Kaishuu Shinozaki-Conefrey
09:25–09:45	Simulating Public Transit Fare Policies in NYC: An Efficient, Socioeconomic-Aware Framework Parker Wischhover, Hossein Amiri, Kiara Ha, Jooyoung Yoo, Lina Li, Andreas Züfle, Joon-Seok Kim
09:45–10:00	GeoScout: A Conversational Agentic GeoAI Framework for Spatial Decision Support in Methane Leak Detection and Repair Jinya Wang, Mingke Li, Steve Liang
10:00–10:30	Coffee Break
10:30–11:20	Keynote: Toward Global-Scale AI-Driven Digital Twins of Earth's Land Ecosystems Yiqun Xie
11:20–11:35	Persistent Geospatial Outage Scenario Construction for Interdependent Infrastructure Simulation Solongo Ganbold, Gelila Webster, Sohini Roy
11:35–11:55	Configuration in Finite-Sample Redistricting Ensemble Inference: A Texas Case Study Alicia Guerra, Tianxiang Lu
11:55–12:00	Closing Remarks

From the workshop website; check there for last-minute changes.

The 4th ACM SIGSPATIAL International Workshop on Human Mobility Prediction (HuMob 2026)

Organizers: Takahiro Yabe (New York University), Kota Tsubouchi (LY Corporation), Toru Shimizu (LY Corporation)

Program

09:00–09:10	Welcome & Opening Takahiro Yabe (New York University)
09:10–09:20	About the HuMob 2026 Dataset Toru Shimizu (LY Corporation)
09:20–09:35	Post-Disaster OD Flow Reconstruction via Calendar-Aware Bridging and Flow-Difference Completion Shuai Liu, Ning Cao, Gao Cong
09:35–09:50	Multiple Calibration for Post-Disaster Origin–Destination Reconstruction Ning Cao, Yuanlong Chen, Yuxiao Dou, Shuai Liu, Gao Cong
09:50–10:05	ReBOUND: Reconstructing Post-Disaster Dynamic OD Flows with a Boundary-Guided Mixture of Experts Xiaolei Liu, Bangchao Deng, Jinzhe Song, Chunhua Chen, Dingqi Yang
10:05–10:30	Coffee Break
10:30–10:45	Reconstructing Post-Disaster Mobility with Local Activity Levels and Temporal Patterns Ben Chi, Chuanjia Li, Xinran Chen, Zhanhong Cheng, Xiqun Michael Chen
10:45–11:00	Combining Statistical and Machine Learning Approaches for Post-Disaster Human Mobility Prediction Keiichi Ochiai, Haruto Sugawara, Kouki Kibata, Shunta Yuri, Tomoki Kawabata, Hiroyuki Toda
11:00–11:15	Look Both Ways: Reconstructing Two Hidden Months of Post-Earthquake Mobility Mustafa Sameen, Mrunal Vibhute, Xilei Zhao
11:15–11:30	Break
11:30–11:45	Long-Gap OD Flow Reconstruction using a Heterogeneous Model Ensemble Kunkun Fan, Xiaogang Guo, Wanxian Wu, Hongyu Shi, Li Lin, Luliang Tang
11:45–12:00	Reconstructing Post-Earthquake Mobility with Temporal Gaussian Processes and OD Flow Structure Qishen Zhou, Haolei Du, Jianghan Hu, Qinzhen Wang, Yiming Bie
12:00–12:15	Metric-Aware Imputation of Post-Disaster OD Flows Woojin Park
12:15–12:20	Closing Kota Tsubouchi (LY Corporation)

From the workshop website; check there for last-minute changes.

The 2nd ACM International Workshop on Polar Data Science (PolDS 2026)

Organizers: Josephine Namayanja (University of Maryland, Baltimore County), Sahara Ali (University of North Texas), Chhaya Kulkarni (Towson University), Ratnaksha Lele (University of Maryland, Baltimore County), Devon Dunmire (University at Buffalo)

Program

08:30–08:35	Opening Remarks Josephine Namayanja
08:35–09:20	Keynote: POLARIS: An Interactive and Scalable Data Infrastructure for Polar Science Dr. Mohamed F. Mokbel (University of Minnesota). Session chair: Josephine Namayanja
09:25–10:20	Accepted Paper Presentations (session chair: Emam Hossain) Uncertainty-Aware Sea-Ice Type Mapping with Multiple Ice Charts — Presenter: Samira Alkaee Taleghan How Temporal Coverage and Reconstruction Shape Greenland Glacier Retreat Forecasting — Presenter: Priyadarshini Arcot
10:25–10:40	Break and Group Photo
10:45–11:30	Talk: A Planet Covered in Pixels: What Scalable Raster Analysis Can Uncover Dr. Ahmed Eldawy (University of California, Riverside). Session chair: Sahara Ali
11:35–12:20	Accepted Paper Presentations (session chair: Samira Alkaee Taleghan) Supraglacial Lake Fate Is Knowable Long Before the Season Ends — Presenter: Emam Hossain LLM-based Causal Discovery from Scientific Literature — Presenter: Sahara Ali
12:25–12:30	Closing Remarks Josephine Namayanja

From the workshop website; check there for last-minute changes.

The 2nd ACM SIGSPATIAL International Workshop on Spatial Intelligence for Smart and Connected Communities (SpatialConnect 2026)

Organizers: Guang Wang (Florida State University), Xinyue Ye (University of Alabama), Yu Yang (Lehigh University), Yi Ding (University of Texas at Dallas)

The workshop site has not posted a detailed program.