34th ACM SIGSPATIAL

ACM SIGSPATIAL 2026 - Accepted Research Papers

• Point Encoder Analysis and Design
  John Krumm (University of Southern California)

• SEAFormer: A Spatial Proximity and Edge-Aware Transformer for Real-World Vehicle Routing Problems
  Saeed Nasehibasharzad (University of Melbourne), Farhana Choudhury (The University of Melbourne), Egemen Tanin (The University of Melbourne) and Majid Sarvi (The University of Melbourne)

• CASTOR: A Coverage-Aware Framework for Spatio-Temporal Inference under Moving Observation Masks
  Bharat Jayaswal (Indian Institute of Technology Kharagpur) and Soumya K. Ghosh (Indian Institute of Technology Kharagpur)

• Spatially Aware Adaptive Experimentation
  Lixi Xu (UC Santa Barbara) and Peter Kedron (UC Santa Barbara)

• LDP-DiffTraj: Diffusion Models under Local Differential Privacy for Personalized Human Mobility Trajectory Generation
  Boyang Li (New York University), Shangyi Guo (New York University), Kota Tsubouchi (LY Corporation), Toru Shimizu (LY Corporation), Zhonghang Yuan (University of Science and Technology of China), Joseph Chow (New York University) and Takahiro Yabe (New York University)

• Temporally Consistent Aggregation of Building Footprints [Experiment]
  Philip Mayer (University of Bonn), Alexander Naumann (University of Bonn), Felix Roth (University of Bonn), Annika Bonerath (University of Bonn), Jonas Sauer (Karlsruhe Institute of Technology), Petra Mutzel (University of Bonn) and Jan-Henrik Haunert (University of Bonn)

• SPOT: Spatially Preserving Object Detection with Transformers
  Chan Young Koh (University of Rhode Island) and Abdeltawab Hendawi (University of Rhode Island)

• HiFIVE: High-Fidelity Vector-Tile Reduction for Interactive Map Exploration
  Tarlan Bahadori (University of California, Riverside) and Ahmed Eldawy (University of California, Riverside)

• A Benchmark Study of UNet and Embedding-Based Models for Greenland Coastline Segmentation
  Ahmet Talha Akgül (IT University of Copenhagen), Jason Joshua So (IT University of Copenhagen), Thorvald Sørensen (IT University of Copenhagen) and Maria Astefanoaei (IT University of Copenhagen)

• Causal-Flow SCM: Calibrated Forecasting and Counterfactual Prioritization for Airport Delay Propagation
  Yuteng Zhang (University of Washington) and Ekin Uğurel (New York University)

• SOCIA-∇: Textual Gradient Meets Multi-Agent Orchestration for Automated Spatially Grounded Simulator Generation
  Yuncheng Hua (School of Computer Science Engineering, University of New South Wales), Sion Weatherhead (School of Computer Science Engineering, University of New South Wales), Mehdi Jafari (School of Computer Science Engineering, University of New South Wales), Hao Xue (Hong Kong University of Science and Technology (Guangzhou)) and Flora Salim (School of Computer Science Engineering, University of New South Wales)

• OSMGraphCLIP: Learning Global Location Representations from OpenStreetMap Graphs
  Dimitrios Michail (Harokopio University of Athens), Eleni Saka (National Technical University of Athens), Ioannis Giannopoulos (Vienna University of Technology) and Ioannis Papoutsis (National Technical University of Athens & National Observatory of Athens)

• Impact of Incorporating Multiple Spatial Sources on Different Paradigms for Short-term Power Load Forecast [Experiment]
  Ce Li (Iowa State University), Qiang Gao (Southwestern University of Finance and Economics), Kunpeng Zhang (University of Maryland) and Goce Trajcevski (Iowa State University)

• NextLocMoE: Enhancing Next Location Prediction via Location-Semantics and Personalized Mixture-of-Experts
  Liu Shuai (Nanyang Technological University), Ning Cao (Nanyang Technological University), Yile Chen (Nanyang Technological Unversity), Yue Jiang (Nanyang Technological Unversity) and Gao Cong (Nanyang Technological Unversity)

• Identifying Cascading Failures in Urban Road Networks from GPS-based Probe Vehicle Data: Evidence from Extreme Precipitation Events in Guangzhou
  Wanzhen Xu (Institute for environment and development (LESTARI), National University of Malaysia (UKM)), Shuya Xiao (School of Public Administration, Guangzhou Xinhua University) and Nuriah Abd Majid (Institute for environment and development (LESTARI), National University of Malaysia (UKM))

• TopoBrick: Agentic Topology Sampling of Exogenous Variables for Zero-Shot Building IoT Forecasting
  Xiachong Lin (UNSW), Du Yin (UNSW), Arian Prabowo (The University of New South Wales), Hao Xue (HKUST-GZ), Wen Hu (UNSW), Imran Razzak (MBZUAI), Matthew Amos (CSIRO), Sam Behrens (CSIRO) and Flora Salim (The University of New South Wales)

• Geo-Embeddings as Spatial Proxy Controls for Residualization-Based Effect Estimation
  Henrique Carvalho (Universidade Federal de Minas Gerais (UFMG)), Renato Assunção (ESRI), Flavio Figueiredo (Universidade Federal de Minas Gerais (UFMG)), Kevin Butler (ESRI), Zeping Liu (University of Texas at Austin) and Gengchen Mai (University of Texas at Austin)

• HeatCast: A Benchmark for Neighborhood-Scale LST Forecasting across 124 U.S. Cities
  Jesus Guerrero (University of Texas at San Antonio), Isaac Corley (Taylor Geospatial), Leon Najafirad (Independent Researcher), Maryam Tabar (University of Texas at San Antonio) and Paul Rad (University of Texas at San Antonio)

• SAGE-Traj: Efficient Hierarchical Trajectory Generation via Distilled Semantic Reasoning
  Dimuthu Lakmal (University of Melbourne), Renata Borovica-Gajic (University of Melbourne) and Shanika Karunasekera (University of Melbourne)

• Graceful Degradation in Trajectory User Linking: A Regime-Adaptive Aggregation Framework
  Yi Xu (China University of Geosciences, Beijing), Shuhui Gong (China university of Geoscience, Beijing), Jia Wang (China university of Geoscience, Beijing), Tong Bian (University of Cambridge), Yuchen Yang (Hong Kong Polytechnic University), Jilin Hu (East China Normal University; Shanghai Engineering Research Center of Big Data Management) and Hongbin Pei (School of Cyber Science and Engineering, Xian Jiaotong University)

• From Symbolic to Geometric: Enabling Spatial Reasoning in Large Language Models
  Chen Chu (University of Southern California), Bita Azarijoo (University of Southern California), Li Xiong (Emory University), Khurram Shafique (Novateur Research Solutions) and Cyrus Shahabi (University of Southern California)

• Cross-domain Polygon Extraction from Historical Maps via Legend-guided Semantic Fusion
  Fandel Lin (USC Information Sciences Institute), Zekun Li (University of Minnesota, Twin Cities), Yao-Yi Chiang (University of Minnesota, Twin Cities) and Craig A. Knoblock (USC Information Sciences Institute)

• Certified Multi-Agent Collaboration via Boundary Adaptation under Worst-Case Response Constraints
  Prabin Giri (Iowa State University) and Goce Trajcevski (Iowa State University)

• Modeling Subjective Urban Perception with Human Gaze
  Lin Che (ETH Zurich), Xi Wang (ETH Zurich), Marc Pollefeys (ETH Zurich), Konrad Schindler (ETH Zurich), Martin Raubal (ETH Zurich) and Peter Kiefer (ETH Zurich)

• Do We Still Need Gazetteers in the Era of LLMs? Chaining Retrieval with a Spatial Neuro-Symbolic Index [Experiment]
  Alexis Horde-Vo (RMIT University), Matt Duckham (RMIT University) and Estrid He (RMIT University)

• Seeing Less in a Sparse World: Cross-View Geolocalization from Limited Field-of-View Observations
  Fahimul Aleem (University of Central Florida) and Shruti Vyas (University of Central Florida)

• SIM 2.0: Floor Plan Vectorization via VLM Semantic Normalization with Pixel-Wise Self-Consistency
  Halleluyah Brhanemesqel (UCSC) and Roberto Manduchi (UCSC)

• How do Self-Supervised Remote Sensing Vision Models Transfer to Downstream Tasks?
  Julia Romero (University of Colorado Boulder), Qin Lv (University of Colorado Boulder) and Morteza Karimzadeh (University of Colorado Boulder)

• Traffic-IMC: An Urban Road-Network Traffic Forecasting Benchmark [Experiment]
  Seungbin Yim (Sungkyunkwan University), Hyungchai Park (Stanford Center at Incheon Global Campus) and Simon S. Woo (Sungkyunkwan University)

• CoarseETA: Leveraging Coarse Data to Boost the Accuracy of Open-source ETA Queries
  Areeg Mostafa (University of Minnesota) and Mohamed Mokbel (University of Minnesota)

• RA-VP: Risk-Aware Pedestrian Traffic Violation Prediction at Signalized Intersections
  Nadeeshan Dissanayake (The University of Melbourne), Renata Borovica-Gajic (The University of Melbourne), Egemen Tanin (The University of Melbourne) and Shanika Karunasekera (The University of Melbourne)

• TraBiMap: A Transition-Centric Probabilistic Binary Map of Trajectories for Privacy-Aware Analysis
  Paul Walther (Technical University of Munich), Florian Theimer (LMU Munich), Xuanshu Luo (Technical University of Munich), Matthias Schubert (Munich Center for Machine Learning, LMU Munich) and Martin Werner (Technical University of Munich)

• GeoLogHash: Sparsity-Aware Exponential MinHashing for Top-k Polygonal Search
  Alima Subedi (Missouri University of Science and Technology), Md Arifuzzaman (Missouri University of Science and Technology) and Satish Puri (Missouri University of Science and Technology)

• Behaviorally Grounding Large Language Models with Revealed Choices for Human Mobility Prediction
  Boyang Li (New York University), Sizhe Xu (New York University), Donghak Lee (New York University), Shangyi Guo (New York University), Zhaonan Wang (New York University) and Takahiro Yabe (New York University)

• STEP -- Stochastic Travel Execution Path
  Roy Levin (Microsoft)

• ImplicitTerrainV2: Wavelet-Guided Spatially Adaptive Neural Terrain Representation
  Haoan Feng (University of Maryland, College Park), Xin Xu (University of Maryland, College Park) and Leila De Floriani (University of Maryland, College Park)

• geomGMD: Translation- and Rotation-Invariant Geometric Graph Mapping Distance for Building Footprint Similarity
  Laura Bülte (University of Bonn), Alexander Naumann (University of Bonn), Johanna Schlurmann (University of Bonn), Jan-Henrik Haunert (University of Bonn) and Petra Mutzel (University of Bonn)

• Investigating the Multi-Scale Reproducibility of GeoAI Models for Urban Perception [Experiment]
  Yingjing Huang (University of Vienna), Krzysztof Janowicz (University of Vienna), Mina Karimi (University of Vienna), Zilong Liu (University of Vienna), Songling Wang (University of Vienna), Annika Suess (University of Vienna) and Alexandra Fortacz-Lazan (University of Vienna)

• LocationBind: Coordinate-Pivot Alignment of Heterogeneous Urban Modalities in a Unified Latent Space
  Naoki Tamura (Nagoya University), Haru Terashima (Graduate School of Engineering, Nagoya University), Kazuyuki Shoji (Institutes of Innovation for Future Society, Nagoya University), Kenta Urano (Graduate School of Engineering, Nagoya University, Japan), Takuro Yonezawa (Graduate School of Engineering, Nagoya University) and Nobuo Kawaguchi (Institutes of Innovation for Future Society, Nagoya University)

• Pixel-Level Transformers in Remote Sensing: A Canopy Height Case Study [Experiment]
  Sven Ligensa (University of Münster), Jan Pauls (University of Münster), Karsten Schrödter (University of Münster), Ibrahim Fayad (Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL) and Fabian Gieseke (University of Münster)

• TARF: Track-Aware Reliability Fusion for 3D Drone Tracking with Sparse Multi-LiDAR Point Clouds
  Md. Hasibur Rahman (Missouri University of Science and Technology) and Sanjay Madria (Missouri S & T)

• Measuring Marketplace Dynamics in Peer-to-Peer Vehicle Rental Platforms --- A Geospatial Longitudinal Study
  Hassan Khan (North Carolina State University) and Muhammad Shahzad (North Carolina State University)

• SPECTRA: Band-Routed Embedding and Parameter-Efficient Cross-Sensor Fine-Tuning of Geospatial Foundation Models
  Xingyan Li (University of Maryland, Baltimore County), Jordan A. Caraballo-Vega (NASA Goddard Space Flight Center), Jie Gong (NASA Goddard Space Flight Center), Mark L. Carroll (NASA Goddard Space Flight Center) and Jianwu Wang (University of Maryland, Baltimore County)

• GeoOutageBench: Benchmarking Ambiguity-aware, Ontology-grounded Geospatiotemporal KGQA for Multimodal Power Outage and Resilience Analysis [Experiment]
  Ethan D. Frakes (University of Central Florida), Amy Kvien (University of Central Florida), Rishabh Kundu (Case Western Reserve University), Redad Mehdi (Case Western Reserve University), Van D. Tran (Case Western Reserve University), Vibha S. Mandayam (Case Western Reserve University), Kristopher O. Davis (University of Central Florida), Erika I. Barcelos (Case Western Reserve University), Roger H. French (Case Western Reserve University), Yinghui Wu (Case Western Reserve University) and Mengjie Li (University of Central Florida)

• Multi-Label Proportion Learning for Sea-Ice Type Prediction
  Samira Alkaee Taleghan (University of Colorado Denver), Younghyun Koo (National Snow and Ice Data Center (NSIDC), CIRES, University of Colorado Boulder), Andrew P. Barrett (National Snow and Ice Data Center (NSIDC), CIRES, University of Colorado Boulder) and Farnoush Banaei-Kashani (University of Colorado Denver)

• IBAD: Interpretable Behavioral Anomaly Detection on Human Mobility Data
  Bita Azarijoo (University of Southern California), John Krumm (University of Southern California) and Cyrus Shahabi (University of Southern California)

• The Coordinates Were Always There: Detecting and Quantifying Pretraining Contamination from Geospatial Data in LLMs
  Naman Awasthi (University of Maryland, College Park), Saad Abrar (University of Maryland, College Park), Dea Bardhoshi (University of Maryland, College Park), Bhavika Buddi (University of Maryland, College Park), Eesha Kurella (University of Maryland, College Park) and Vanessa Frias-Martinez (University of Maryland, College Park)

• Reinforcement Learning for UAV-based Participatory Sensing in Dynamic Environments
  Xin Ouyang (The Hong Kong University of Science and Technology (Guangzhou)), Songxin Lei (The Hong Kong University of Science and Technology (Guangzhou)), Xusen Guo (The Hong Kong University of Science and Technology (Guangzhou)), Yutian Jiang (The Hong Kong University of Science and Technology (Guangzhou)), Sijie Ruan (Beijing Institute of Technology) and Yuxuan Liang (The Hong Kong University of Science and Technology (Guangzhou))

• Spatial Inference Query with Spatial Model-Index Hybrids
  Avinaba Mistry (University of New Brunswick), Suprio Ray (University of New Brunswick), Mohamed Ahmed (ESRI Canada) and Jon Salter (ESRI Canada)

• Sampling for Region-Aggregated Spatial Scan Statistics
  Foad Namjoo (Kahlert School of Computing, University of Utah), Drew McClelland (Taptap Send), Michael Matheny (Meta) and Jeff M. Phillips (Kahlert School of Computing, University of Utah)

• Do Satellites See Commuters? A Critical Benchmark of Vision Foundation Models for Generative Urban Flow Networks [Experiment]
  Ashiq Shukoor Iqbal (The University of New South Wales), Wilson Wongso (The University of New South Wales) and Flora Salim (The University of New South Wales)

• Reliable Medical Condition Detection from Noisy Location-aware Multimodal Cardiovascular IoBNT Telemetry
  Davide Volpi (Fundació i2CAT), Filip Lemic (Fundació i2CAT), Guillermo Encinas (Fundació i2CAT), Ethungshan Shitiri (Universitat Politècnica de Catalunya), Sergi Abadal (Universitat Politècnica de Catalunya), Eduard Alarcón (Universitat Politècnica de Catalunya) and Xavier Costa-Pérez (Fundació i2CAT)

• Pierce: GPU Ray Tracing for Spatial Joins over Complex 3D Data
  Anton Hackl (Hasso Plattner Institute, University of Potsdam) and Eleni Tzirita Zacharatou (Hasso Plattner Institute, University of Potsdam)

• An Empirical Survey and Benchmark of Learned Distance Indexes for Road Networks [Experiment]
  Gautam Choudhary (Purdue University), Libin Zhou (Purdue University), Yeasir Rayhan (Purdue University) and Walid G Aref (Purdue University)

• WaterBench: Evaluating Geospatial Foundation Models for Coastal and Marine tasks
  Ayush Prasad (University of Rostock) and Stefan Oehmcke (University of Rostock)

• Latent Prediction-Anchored Multi-View Reconstruction for Cross-Network Spatiotemporal Forecasting
  Ryusei Iwasa (The University of Osaka), Zhi Li (The University of Osaka) and Takahiro Hara (The University of Osaka)

• Massive-STEPS: Massive Semantic Trajectories for Understanding POI Check-ins [Experiment]
  Wilson Wongso (UNSW), Hao Xue (UNSW, Hong Kong University of Science and Technology (Guangzhou)) and Flora Salim (UNSW)

• ScaleTraj: Scale-Decomposed Human Trajectory Generation
  Yulin Zeng (Santa Clara University), Yiheng Zhao (Concordia University), Jun Yan (Concordia University) and Yuhong Liu (Santa Clara University)

Shortened Papers

• TrajectoryDiff: Trajectory-Conditioned Diffusion for Radio Map Generation from Sparse Crowdsourced Measurements
  Yaqoob Ansari (Research Associate), Zikai Zhang (Post-Doctoral Researcher) and Khaled Harras (Carnegie Mellon University in Qatar)

• Intersection Is Not Enough: Bridging the Research–Practice Gap in Building Footprint Conflation
  Florian Nachtigall (Potsdam Institute for Climate Impact Research (PIK) & Technical University of Berlin), Felix Wagner (Potsdam Institute for Climate Impact Research (PIK) & Overture Maps Foundation), Jakob Napiontek (Potsdam Institute for Climate Impact Research (PIK) & Humboldt University of Berlin) and Felix Creutzig (Potsdam Institute for Climate Impact Research (PIK) & University of Sussex)

• RectifiedTraj: Map-Free Causal GPS Trajectory Denoising with Rectified Flow
  Dexin Ren (University of Southern California), Shang-Ling Hsu (University of Southern California), Chen Chu (University of Southern California), Lifeng Lin (University of Tokyo), Ryosuke Shibasaki (Reitaku University), Noboru Koshizuka (University of Tokyo) and Cyrus Shahabi (University of Southern California)

• Bal-DC LULC Atlas]{Bal-DC LULC Atlas: Toward a Foundation Model for Ultra-High-Resolution Urban Land Cover Classification
  Junhao Wu (Towson University), Stephen Aboagye-Ntow (Towson University), Chuyuan Wang (Towson University), Michael McGuire (Towson University), Wei Yu (Towson University), Jianwu Wang (University of Maryland, Baltimore County) and Xin Huang (Towson University)

• TS-Mob: Social and Geographical-Aware Time Series Foundation-Model Framework for Human Mobility Prediction
  Massimiliano Luca (Bruno Kessler Foundation), Ciro Beneduce (Bruno Kessler Foundation) and Bruno Lepri (Bruno Kessler Foundation)

• GeoOD-RAG: Probing Geographic Reasoning in Large Language Models for Origin-Destination Flow Prediction
  Yunlin Sun (Sichuan University), Lin Xu (Sichuan University) and Yuankai Wu (Sichuan University)

• Barometric-Assisted Real-Time Map Matching at Multilevel Venues
  Xinyu Zhang (Lyft, Inc.) and James Murphy (Lyft, Inc.)

• GraphWalker: Deployable Inertial-Based Indoor Localization via Trajectory to Graph Alignment
  Maimoonah Al-Mashhadani (Carnegie Mellon University), Yaqoob Ansari (Carnegie Mellon University), Khaled Harras (Carnegie Mellon University) and Eduardo Feo Flushing (Carnegie Mellon University)

• GeoNatureAgent Benchmark: Benchmarking LLM Agents for Environmental Geospatial Analysis Across Frontier and Open-Weight Foundation Models [Benchmark]
  Gabriel Diaz Ireland (Universidad Católica de Ávila (UCAV) / Johns Hopkins University), Diego Prieto Herráez (Universidad Católica de Ávila (UCAV)), Mario García Peces (Independent Researcher), Javier Velázquez Saornil (Universidad Católica de Ávila (UCAV)) and Devika Jain (Harvard University)

• Rethinking Amortized Neural Representations for High-Resolution Terrain Elevation Data
  Haoan Feng (University of Maryland, College Park), Xin Xu (University of Maryland, College Park) and Leila De Floriani (University of Maryland, College Park)

• When Synthetic Wells Help and Hurt: A Spatial-Generalization Benchmark for Subsurface Pore-Pressure Prediction [Experiment]
  Pranav Patel (Northeastern University), Ritik Mahyavanshi (Northeastern University), Muhammad Raiees Amjad (Bahria University), Ilmi Yoon (Northeastern University) and Tehmina Amjad (Northeastern University)

• Spatiotemporal Citywide Traffic Speed Estimation via Public Transit Bus Probes
  Bahare Salehi (Université libre de Bruxelles) and Mahmoud Sakr (Université Libre de Bruxelles)

• FlowDistill: Autocorrelation-Aware Traffic Flow Prediction via Distillation from LLMs
  Chenyang Yu (University of North Texas), Xinpeng Xie (University of North Texas), Chenxi Qiu (University of North Texas) and Yan Huang (University of North Texas)

• COGENT: Continuous Graph Emulators with Neural Ordinary Differential Equations for Long-Term Physical Forecasting
  Zesheng Liu (Lehigh University) and Maryam Rahnemoonfar (Lehigh University)

• GS-QA2:A Benchmark for Geospatial Question Answering over Vector and Raster Data [Experiment]
  Zhuocheng Shang (University of California, Riverside), Shahd Elmahallawy (University of California, Riverside), Zabir Al Nazi (University of California, Riverside), Ahmed Eldawy (University of California, Riverside) and Vagelis Hristidis (University of California, Riverside)

• Spatial-Blocked Bloom Filters: Cache-Efficient Spatial Membership for Raster and Voxel Maps
  Moritz Laass (Technical University Munich (TUM)), Paul Walther (Technical University of Munich) and Martin Werner (Technical University of Munich)

• The Influence of Agent Models on the Complexity of Bus Routing
  Eva Deltl (TU Clausthal), Christian Komusiewicz (Friedrich Schiller University), Jurek Rostalsky (Friedrich Schiller University), Johannes Schröder (TU Berlin) and Luca Pascal Staus (Friedrich Schiller University)

• MapGenie: A Formally Grounded LLM-Powered Agent System for Automated Multi-Step Geospatial Reasoning and Analysis
  Charles Cao (University of Tennessee), Lee Han (University of Tennessee), Lisa Lindley (University of Tennessee), Jie Zhuang (University of Tennessee), Sajal Das (Missouri University of Science and Technology) and Abhilasha Saroj (ORNL)

• GeoFM2Flow: Generating Human Mobility Flows from Geospatial Foundation Model Embeddings
  Zhongfu Ma (University of Minnesota Twin Cities), Meicheng Xiong (University of Minnesota Twin Cities) and Di Zhu (University of Minnesota Twin Cities)

• Dynamic Population Estimates from Ground Features
  Alvin Tan (University of Southern California) and John Krumm (University of Southern California)

• Think Before You Act: Intention-Guided Reasoning for LLM-Based Location Prediction
  Qingxiang Liu (The Hong Kong University of Science and Technology (Guangzhou)), Anqi Liang (Shanghai Jiao Tong University), Zhuoyang Jiang (The Hong Kong University of Science and Technology (Guangzhou)), Yutian Jiang (The Hong Kong University of Science and Technology (Guangzhou)), Sisuo Lyu (The Hong Kong University of Science and Technology), Yu Ji (Fudan University), Haomin Wen (Shanghai Innovation Institute) and Yuxuan Liang (The Hong Kong University of Science and Technology (Guangzhou))

• Stay Area Inference with Sparse Surveillance Information
  Zhipeng Ma (Southwest Jiaotong University), Chenyu Wu (Southwest Jiaotong University), Sijie Ruan (Beijing Institute of Technology), Tianrui Li (Southwest Jiaotong University), Chuishi Meng (JD Technology) and Yu Zheng (Southwest Jiaotong University)

• SF-ANOMALIES: A Mobility Dataset for Behavioral and Contextual Anomaly Detection
  Mauryan Uppalapati (Tulane University) and Carola Wenk (Tulane University)

• An Ensemble Framework for Efficient Behavioural Choice Prediction with Fine-tuned Lightweight LLM on Demand
  M. Jaleed Khan (Fujitsu Research of Europe), Srinivasa Phani Chitti (Fujitsu Research of Europe) and Lowell T Edgar (Fujitsu Research of Europe)

• Tri-Modal Calibration for Road Network Conflation: Four-State Labelling, Dirichlet Multi-Class Probabilities, and Conformal Coverage Guarantees
  Genaro Jr. Peque (LocationMind Inc.)

• MOSAIC: Synthetic Trajectory Generation with Reinforcement Learning
  Joshua Petteno (Data Science and Intelligent Systems Group (DSIS), University of Bonn and Lamarr Institute for Machine Learning and AI), Rajjat Dadwal (Data Science and Intelligent Systems Group (DSIS), University of Bonn and Lamarr Institute for Machine Learning and AI), Alishiba Dsouza (Data Science and Intelligent Systems Group (DSIS), University of Bonn and Lamarr Institute for Machine Learning and AI) and Elena Demidova (Data Science and Intelligent Systems Group (DSIS), University of Bonn and Lamarr Institute for Machine Learning and AI)

• When Plausible Is Not Realistic: Evaluating Human Mobility in LLM-Based Urban Simulation
  Gustavo Santos (Universidade Tecnológica Federal do Paraná), Aline Viana (Inria Saclay) and Thiago Silva (Federal University of Technology - Parana)

• Multi-Task Vehicle Routing with Hierarchical Option Learning
  Hadi Aghazadeh (University of Calgary) and Xin Wang (University of Calgary)

• CLIPPER: Replayable Shortlisted Optimization for Repeated Spatial Coverage Planning
  Julian Teusch (Clausthal University of Technology), Monika Sester (Leibniz University Hannover) and Jörg P. Müller (TU Clausthal)

• Uncertainty-Aware UAV Trajectory Adaptation for Object-Centric Active 3D Reconstruction
  Joan Bernaus Casadesús (i2CAT Foundation), Filip Lemic (i2Cat Foundation), Daniel Johannes Bugelnig (University of Klagenfurt), Bernhard Rinner (University of Klagenfurt) and Xavier Costa-Pérez (i2Cat Foundation & NEC Labs Europe GmbH & ICREA)

• Unlearning on Spatio-Temporal Graphs through Subgraph Virtual Edge Reconstruction
  Qiming Guo (Texas A&M University-Corpus Christi), Wenbo Sun (Delft University of Technology), Chen Pan (University of Texas at San Antonio), Ye Wang (Biogen) and Wenlu Wang (Texas A&M University - Corpus Christi)

• HALT: Human-in-the-Loop Data Acquisition for Supervised Traffic Causality Discovery
  Thomas Jiajun Liang (University of Southern California), John Krumm (University of Southern California) and Ibrahim Sabek (University of Southern California)

• LIAD: Lightweight Interpretable Mobility Anomaly Detection via Agent-Adaptive Behavioral Deviations
  Chanuka Ravishan Algama (Tulane University), Erfan Hosseini Sereshgi (Tulane University) and Carola Wenk (Tulane University)

• Geo-ReAct: An Agentic AI Framework with Concept-Grounded Tools for Geospatial Question Answering
  Zabir Al Nazi (University of California, Riverside), Zhuocheng Shang (University of California, Riverside), Shahd Elmahallawy (University of California, Riverside), Vagelis Hristidis (University of California, Riverside) and Ahmed Eldawy (University of California, Riverside)

• Spatial Reasoning for Semi-Automated Road Topology Correction Using Street-View Imagery
  Zhongqi Zheng (University of California, Santa Barbara) and Alan Murray (University of California, Santa Barbara)

• Depth-Calibrated Crowd Visual Occupancy: A Depth-Aware Framework for Evaluating Crowd Impacts on Urban Streetscapes
  Haoyu Zhuang (Center for Spatial Information Science, The University of Tokyo), Chenbo Zhao (Center for Spatial Information Science, The University of Tokyo), Yoshiki Ogawa (Graduate School of Social Data Science,Hitotsubashi University) and Yoshihide Sekimoto (Center for Spatial Information Science, The University of Tokyo)

• Indexicon: A Spatial Indexing Library [Experiment, Benchmark & Experience]
  Panagiotis Simatis (University of Ioannina), Panagiotis Bouros (Johannes Gutenberg University Mainz) and Nikos Mamoulis (University of Ioannina)

• Reliable Spatial Generalization in Station-Guided Earth Observation: A Support-Aware Evaluation Protocol [Experiment]
  Zhihong Ke (Hong Kong University of Science and Technology (Guangzhou)), Yu Chen (Hong Kong University of Science and Technology (Guangzhou)) and Luoye Chen (Hong Kong University of Science and Technology (Guangzhou))

• Staypoint Detection from Noisy Trajectory Data [Experiment Paper]
  Lance Kennedy (Emory University), Hossein Amiri (Emory University), Yueyang Liu (Emory University), Riyang Bao (Emory University), Hanqi Chen (Emory University), Mohammad Hashemi (Emory University), Ruochen Kong (Emory University), Xiaotong Liu (Emory University), Joon-Seok Kim (Emory University), Shengpu Tang (Emory University), Liang Zhao (Emory University) and Andreas Züfle (Emory University)

• Hierarchically-Adaptive Global-Local Grouping for Multi-Agent Reinforcement Learning in Urban Mobility Resource Rebalancing
  Farshid Nooshi (University of Connecticut) and Suining He (University of Connecticut)

• Spatially Resolved Wildfire Smoke AQI Forecasting with Physics-Informed Transformers
  Emilie Beck (Colorado State University), Andrei Bachinin (Colorado State University), Parker Jones (Colorado State University), Brenna Wolf (Colorado State University), Sangmi Lee Pallickara (Colorado State University) and Shrideep Pallickara (Colorado State University)

• Atmosphere-Aware Place Discovery: Semantic Urban Mapping with Multimodal Vibe Enrichment
  Mikhail Aizinov (Technical University of Munich), Wanyun Ling (Technical University of Munich), Evgenii Kniazev (University of Lille), Chenxi Liu (Hong Kong Institute of Science & Innovation, Chinese Academy of Sciences) and Ziyue Li (Technical University of Munich)

• ROTATOR+HG: Representation Learning for Intermodal Routes with Hypergraph
  Steve Ludovic Gounoue Guiffo (Data Science and Intelligent Systems Group (DSIS), University of Bonn and Lamarr Institute for Machine Learning and AI), Genivika Mann (Data Science and Intelligent Systems Group (DSIS), University of Bonn and Lamarr Institute for Machine Learning and AI), Rajjat Dadwal (Data Science and Intelligent Systems Group (DSIS), University of Bonn and Lamarr Institute for Machine Learning and AI) and Elena Demidova (Data Science and Intelligent Systems Group (DSIS), University of Bonn and Lamarr Institute for Machine Learning and AI)

• A Biologically-Inspired Framework for Online Mining Spatio-Temporal Dependency Rules from Event Data Streams}
  Piotr S. Maciąg (Warsaw University of Technology, Institute of Computer Science)

• A Composition-Aware Pretraining Framework for Geospatial Foundation Models
  Aryan Kashyap Naveen (National Institute of Technology Karnataka, Surathkal), Abhishek Srinivas (National Institute of Technology Karnataka, Surathkal), Pranav Moothedath (National Institute of Technology Karnataka, Surathkal) and Shrutilipi Bhattacharjee (National Institute of Technology Karnataka, Surathkal)

• GELATTO: Geospatial Relation-Aware Soft Target Learning for Multimodal Region Representation
  Min Namgung (University of Minnesota), Janghyeon Lee (University of Minnesota) and Yao-Yi Chiang (University of Minnesota)

• Characterizing Multidimensional Landscape Discontinuities at Phantom Borders with Satellite Foundation-Model Embeddings
  Yingjing Huang (University of Vienna), Krzysztof Janowicz (University of Vienna), Mina Karimi (University of Vienna), Zilong Liu (University of Vienna), Songling Wang (University of Vienna) and Annika Suess (University of Vienna)

• Context-Aware Metric Differential Privacy for Vehicle Trajectory Data
  Gaoyi Chen (Department of Computer Science and Engineering, University of North Texas), Yan Huang (Department of Computer Science and Engineering, University of North Texas) and Chenxi Qiu (Department of Computer Science and Engineering, University of North Texas)

• Measuring Spatial Hallucinations in Large Language Models through Urban Micro-scale Cognitive Mapping
  Jiamin Bai (Singapore Management University) and Jack Jiao (Singapore Management University)

• Learning Context-Local Representation with Geospatial Foundation Model for Fine-Scale Spatial Prediction
  Yijun Lin (University of Minnesota, Twin Cities), Theresa Chen (University of Minnesota), Colby Brungard (New Mexico State University), Grunwald Sabine (University of Florida), Sue Ives (ABR, Inc., Anchorage and Fairbanks, AK, USA), Matt Macander (ABR, Inc., Anchorage and Fairbanks, AK, USA), Timm Nawrocki (University of Alaska-Anchorage), Yao-Yi Chiang (University of Minnesota, Twin Cities) and Nic Jelinski (University of Minnesota)

• SymNetPro: LOS-Aware Directional Multi-Transmitter Localization from Sparse Radio Observations
  Lyuzhou Ye (University of North Texas), Heng Fan (University of North Texas) and Yan Huang (University of North Texas)

• PlaceRep: Geospatial Place Representation Learning from Large-Scale Point-of-Interest Data
  Mohammad Hashemi (Emory University), Hossein Amiri (Emory University) and Andreas Züfle (Emory University)

• LiFDE: A Lightweight Server-Side Framework for Smartphone-Based Feature Localization
  Brandon Tulsie (Shibaura Institute of Technology) and Hiroaki Fukuda (Shibaura Institute of Technology)

• A Modular Multi-task Reasoning Framework Integrating Spatio-temporal Models and LLMs
  Kethmi Hirushini Hettige (College of Computing and Data Science, NTU, Singapore & Institute for Infocomm Research, ASTAR, Singapore), Jiahao Ji (School of Computer Science & Engineering, Beihang University, China & Meituan Inc. Beijing, China), Cheng Long (Nanyang Technological University, Singapore), Shili Xiang (Institute for Infocomm Research, ASTAR, Singapore), Gao Cong (Nanyang Technological University, Singapore) and Jingyuan Wang (School of Computer Science & Engineering, Beihang University, China)

• City Editing: Hierarchical Agentic Execution for Dependency-Aware Urban Geospatial Modification
  Rui Liu (University of Kansas), Steven Jige Quan (Seoul National University), Zhong-Ren Peng (University of Florida), Zijun Yao (University of Kansas), Han Wang (University of Kansas), Pengyang Wang (University of Macau), Kunpeng Liu (Clemson University), Yanjie Fu (Arizona State University) and Dongjie Wang (University of Kansas)

• Event-Level Mobility Diffusion for Spatio-Temporal Interaction Order Prediction
  Jing Li (York University), Abed Matinpour (York University) and Manos Papagelis (York University)

• Population Mapping with Functional Spatial Units and Hybrid Transformer–Graph Neural Networks
  Issa Nasralli (Data Engineering and Semantics Research Unit, Faculty of Sciences, University of Sfax Sfax, Tunisia), Imene Masmoudi (Data Engineering and Semantics Research Unit, Faculty of Sciences, University of Sfax Sfax, Tunisia), Hassen Drira (ICube Laboratory, University of Strasbourg, CNRS Strasbourg, France) and Mohamed Ali Hadj Taieb (Data Engineering and Semantics Research Unit, Faculty of Sciences, University of Sfax Sfax, Tunisia)

• PlaceSeek: Human-Centered Geospatial Retrieval of Urban Outdoor Places via Semantic Grounding and Affective Alignment
  Ziqi Cui (Politecnico di Milano) and Shangyu Lou (University of California, Santa Barbara & San Diego State University)

• Uncertainty-Aware Estimation of Ambient Population Demographics from Origin-Destination Mobility Data
  Joon-Seok Kim (Emory University), Su Han (Geography and Environmental Studies, Texas State University) and Andreas Züfle (Emory University)

• Knowledge Graph Completion Methods Fail on Geographic Knowledge Graphs [Benchmark]
  Avik Das (University of Maryland), Nicole Schneider (University of Maryland) and Hanan Samet (University of Maryland)

• SceneGTMM: A Conformal Mapping-based Scene-Aware Transferable GNN-Transformer Dual-Graph Interaction Framework for Map Matching
  Yongliang Zhang (Amap, Alibaba Group), Feng Song (Amap, Alibaba Group), Ji Chen (Amap, Alibaba Group), Lishuai Guo (Amap, Alibaba Group), Yong Deng (Amap, Alibaba Group), Yue Zheng (Amap, Alibaba Group), Tianyi Liu (Amap, Alibaba Group), Zhixiong Chen (Amap, Alibaba Group) and Qixin Zhang (Amap, Alibaba Group)

• LEMU: Personalized Urban Location Modeling through Mobility-Derived Temporal and Semantic Contexts
  Haru Terashima (Graduate School of Engineering, Nagoya University), Kota Tsubouchi (LY Corporation), Shuji Yamaguchi (LY Corporation), Naoki Tamura (Graduate School of Engineering, Nagoya University), Kazuyuki Shoji (Institutes of Innovation for Future Society, Nagoya University), Nobuo Kawaguchi (Institutes of Innovation for Future Society, Nagoya University) and Takuro Yonezawa (Graduate School of Engineering, Nagoya University)

• The Circuity of North American Rideshare Rides
  James Murphy (Lyft)

• SPiRe - Spatial Partitioning for Predictive Regimes
  Renato Assuncao (ESRI), Kevin Butler (ESRI), Eric Krause (ESRI), Marshall Mueller (ESRI), Carlos Osorio-Murillo (ESRI) and Josiah Parry (ESRI)

• Urban Land Use Planning with a Hierarchical Graph Generative Adversarial Framework
  Fanglan Chen (Virginia Tech), Shengkun Wang (Virginia Tech), Dongjie Wang (University of Kansas) and Chang-Tien Lu (Virginia Tech)

• Multiscale Physics-Informed Heterogeneous Inductive Graph Learning for Flood Infrastructure Impact Prediction
  Udbhav Srivastava (University of Alabama), Dan Zou (University of Alabama), Guang Wang (Florida State University), Shahram Rahimi (University of Alabama) and Xinyue Ye (University of Alabama)

• UrbanRouteBench: A Benchmark for Natural-Language Urban Multimodal Route Planning
  Peng Kang (Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences), Juanjuan Zhao (Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences), Xiaoying Liu (Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences), Xitong Gao (Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences), Pengyang Wang (State Key Laboratory of Internet of Things for Smart City, University of Macau), Kejiang Ye (Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences) and Chengzhong Xu (State Key Laboratory of Internet of Things for Smart City, University of Macau)

• Do Large Language Models Support Geospatial Reasoning? [Experiment]
  Nicole Schneider (University of Maryland), Nandini Ramachandran (University of Maryland), Kent O'Sullivan (University of Sydney) and Hanan Samet (University of Maryland)

• A Framework for Analysing the Behavioral Patterns of Glacial Lake Dynamics Using Satellite Images and Semantic-SAM
  Nury Yuleny Arosquipa Yanque (University of Sao Paulo (USP)), Alberto Castañeda Barreto (Instituto Nacional de Investigacion en Glaciares y Ecosistemas de Montaña (INAIGEM)) and Roberto Hirata Junior (University of Sao Paulo (USP))

• Adaptive Information Masking for Scalable Uncertainty Estimation in Geospatial Foundation Models
  Mohammad Habibullah Rakib (Colorado State University), Rupasree Dey (Colorado State University), Tanjim Bin Faruk (Colorado State University), Andrei Bachinin (Colorado State University), F. Jay Breidt (NORC at the University of Chicago), Shrideep Pallickara (Colorado State University) and Sangmi Lee Pallickara (Colorado State University)

• GeoGNN: Time Series Geo-Localization using Two-Tower Graph Neural Networks
  Toan Tran (Emory University), Waqwoya Abebe (Oak Ridge National Laboratory), Abhishek Potnis (Oak Ridge National Laboratory), Supriya Chinthavali (Oak Ridge National Laboratory), Cyrus Shahabi (University of Southern California), Li Xiong (Emory University) and Dalton Lunga (Oak Ridge National Laboratory)