Accepted Papers



Click on the title of the track to go to the respectrive list of accepted papers

Research Track
Industry, Systems and Applications Track
Demo Track
PhD Forum Track

Research Track


An Effective Way to Reduce Network Transmission in Backup System

Yun Chao (South China University of Technology), Jindian Su (South China University of Technology)


Collecting Individual Trajectories under Local Differential Privacy

Jianyu Yang (Beijing University of Posts and Telecommunications), Xiang Cheng (Beijing University of Posts and Telecommunications), Sen Su (Beijing University of Posts and Telecommunications), Huizhong Sun (Beijing University of Posts and Telecommunications), Changju Chen (Beijing University of Posts and Telecommunications)


Multi-round Data Poisoning Attack and Defense against Truth Discovery in Crowdsensing Systems

Yuanqin Cai (ECNU), Mohan Li (Guangzhou University)


Effectively Relocating Ride-Hailing Drivers Using a Markov Decision Process with Dynamic Sharding

Keru Chen (GrabTaxi Holdings Pte Ltd), Li Wentong (National University of Singapore), Michael Chirico (Google), Tenindra Abeywickrama (GrabTaxi Holdings)


Efficient Split Learning with Non-iid Data

Yuanqin Cai (ECNU), Tongquan Wei (East China Normal University)


Learning to optimize DAG scheduling in Heterogeneous Environment

Jinhong Luo (Huawei), Yunfan Zhou (Huawei), Xijun Li (Huawei Noah’s Ark Lab), Mingxuan Yuan (Huawei), Jia Zeng (Huawei Noah’s Ark Lab), Jianguo Yao (Shanghai Jiao Tong University)


A Matching Based Spatial Crowdsourcing Framework for Egalitarian Task Assignment

Ramneek Kaur (IIIT-Delhi), Vikram Goyal (IIIT Delhi, India), Venkata M Viswanath Gunturi  (Indian Institute of Technology Ropar), Cheng Long (Nanyang Technological University)


The AI+R Tree: An Instance-Optimized R-tree

Abdullah Al Mamun (Purdue University), Chowdhury Mohammad Rakin Haider (Purdue University), Jianguo Wang (Purdue University), Walid G. Aref (Purdue University)


Advanced Conjunctive Boolean Streaming Spatial Keyword Processing

Mayur M Patil (University of California, Riverside)


Reachability Embeddings: Scalable Self-Supervised Representation Learning from Mobility Trajectories for Multimodal Geospatial Computer Vision

Swetava Ganguli (Apple), C. V. Krishnakumar Iyer (Apple), Vipul Pandey (Apple)


Modeling Trajectories with Multi-task Learning

Kaijun Liu (NTU), Sijie Ruan (Xidian University), Qianxiong Xu (Nanyang Technological University), Cheng Long (Nanyang Technological University), Nan Hu (Alibaba Cloud Computing), Nan Xiao (Alibaba Cloud Computing), Liang Yu (Alibaba Cloud Computing), Sinno Pan (NTU, Singapore)


Route Recommendation to Facilitate Carpooling

Christine Bassem (Wellesley College), Svitlana Honcharuk (Wellesley College), Mohamed Mokbel (University of Minnesota – Twin Cities)


SS-OCoClus: A contiguous order-aware method for semantic trajectory co-clustering

Yuri Santos (Universidade Federal de Santa Catarina), Jonata Tyska Carvalho (Federal University of Santa Catarina), Vania Bogorny (Federal University of Santa Catarina)


Sensitivity Analysis of Personal Location Disclosure

John Krumm (Microsoft Research)


SecureIoD: A Secure Data Collection and Storage Mechanism for Internet of Drones

Cong Pu (Marshall University), Andrew Wall (Marshall University), Imtiaz Ahmed (Howard University), Kim-Kwang Raymond Choo (The University of Texas at San Antonio)


Reliable Geofence Activation with Sparse and Sporadic Location Measurements

Kien D Nguyen (Meta Platforms, Inc.), John Krumm (Microsoft Research)


Evaluation of Probability Distribution Distance Metrics in Traffic Flow Outlier Detection

Erik Andersen (University of Southern Denmark), Marco Chiarandini (University of Southern Denmark), Marwan Hassani (Eindhoven University of Technology), Stefan Jänicke (University of Southern Denmark), Panagiotis Tampakis (University of Southern Denmark), Arthur Zimek (University of Southern Denmark)


Optimizing Graph-based Approximate Nearest Neighbor Search: Stronger and Smarter

Jun Liu (Tsinghua University), Zhenghua Zhu (Tsinghua University), Jingbo Hu (Tsinghua University), Hanbo SUN (Tsinghua University), Li Liu (kuaishou technology), Lingzhi Liu (Kuaishou Technology), Guohao Dai (Tsinghua University), Huazhong Yang (Tsinghua University), Yu Wang (Tsinghua University)


A hierarchical graph-based accessibility measure: application to a maritime transportation network

Maryam Maslek Elayam (institut de recherche de l’école navale), Cyril Ray (Ecole Navale), Christophe Claramunt (Ecole Navale)


Practical Privacy Preservation in a Mobile Cloud Environment

Dimitrios Tomaras (Athens University of Economics and Business), Michail Tsenos (Athens University of Economics and Business), Vana Kalogeraki (Athens University of Economics and Business, Greece)


ASRL: An Adaptive GPS Sampling Method Using Deep Reinforcement Learning

Boting Qu (Northwest University), Mengjiao Zhao (Northwest University), Jun Feng (Northwest University), Xin Wang (University of Calgary, Canada)


Tearing Down the Tower of Babel: Unified and Efficient Spatio-temporal Queries for NoSQL Stores

Nikolaos Koutroumanis (University of Piraeus), Christos Doulkeridis (University of Pireaus), Akrivi Vlachou (University of the Aegean)


Integrating Heterogeneous Sources for Learned Prediction of Vehicular Data Consumption

Andi Zang (Northwestern University), Xiaofeng Zhu (Microsoft), Ce Li (ICDM), Fan Zhou (School of Information and Software Engineering, University of Electronic Science and Technology of China), Goce Trajcevski (Iowa State University)


3D-ConvLSTMNet A Deep Spatio-Temporal Model for Traffic Flow Prediction

Lihua He (School of Applied Sciences, Macao Polytechnic Institute, Macao, SAR), Wuman Luo (School of Applied Sciences, Macao Polytechnic Institute, Macao, SAR)


DriBe: On-road Mobile Telemetry for Locality-neutral Driving Behavior Annotation

Debasree Das (IIT Kharagpur), Sugandh Pargal (IIT KHARAGPUR), Sandip Chakraborty (IIT Kharagpur), Bivas Mitra (IIT Kharagpur)


On Epidemic-aware Socio Spatial POI Recommendation

Cedric Parfait Kankeu Fotsing (Academia Sinica), Ya-Wen Teng (Institute of Information Science, Academia Sinica), Guang-Siang Lee (Academia Sinica), Chih-Ya Shen (National Tsing Hua University), Yi-Shin Chen (National Tsing Hua University), De-Nian Yang (Academia Sinica)

Industry, Systems and Applications


Efficiently Answering k-hop Reachability Queries in Large Dynamic Graphs for Fraud Feature Extraction

Zequan Xu (Xiamen University), Siqiang Luo (Nanyang Technological University), Jieming Shi (The Hong Kong Polytechnic University), Hui Li (Xiamen University), Chen Lin (Xiamen University), Qihang Sun (Tencent Inc.), Shaofeng Hu (Tencent Inc.)


Tracking the Evolution of Water Flow Patterns Based on Spatio-Temporal Particle Flow Clusters

Nelson Tavares de Sousa (Kiel University), Carola Trahms (Geomar), Peer Kroger (Christian-Albrechst-University Kiel), Matthias Renz (University of Kiel), Rene Schubert (Geomar), Arne Biastoch (Geomar)


CityCross: Transferring Attention-based Knowledge for Location-based Advertising Recommendation

Dazhuo Qiu (Leiden University), Yihao Wang (Kuaishou Inc), Yan Zhao (Aalborg University), Liwei Deng (University of Electronic Science and Technology of China), Kai Zheng (University of Electronic Science and Technology of China)


RASED: A Scalable Dashboard for Monitoring Road Network Updates in OSM

Mashaal Musleh (University of Minnesota), Mohamed Mokbel (University of Minnesota – Twin Cities)


PhyloView: A System to Visualize the Ecology of Infectious Diseases using Phylogenetic Data

Minh Tri Le (George Mason University), David Attaway (ESRI), Taylor Anderson (George Mason University), Hamdi Kavak (George Mason University), Amira Roess (George Mason University), Andreas Züfle (George Mason University)


A Geospatial Method for Detecting Map-Based Road Segment Discrepancies

JIAWEI YAO (University of Washington Tacoma), Eyhab Al-Masri (University of Washington), Mohamed  Ali (University of Washington), Abdul Salama (University of Washington), Adel Sabour (University of Washington), Vashutosh Agrawal (Microsoft Corporation), Ming Tan (Microsoft Corporation), Harsh Govind (Microsoft Corporation), Egor Maresov (Microsoft Corporation), Ravi Prakash (Microsoft Corporation), Reuben Keller (University of Washington Tacoma), Dino Jazvin (University of Washington Tacoma), Daniel Jiang (University of Washington Tacoma)


Machine Learning Models for Vessel Route Forecasting: An Experimental Comparison

Eva Chondrodima (University of Piraeus), Petros Mandalis (University of Piraeus), Nikos Pelekis (University of Piraeus), Yannis Theodoridis (University of Piraeus)

Demo Track


UrbanGen: Generating Combined In- and Outdoor Trajectories

Yunkai Sun (University of Science and Technology of China), Xike Xie (University of Science and Technology of China), Nichlas Nielsen (AAU), Torben Bach Pedersen (Aalborg University), Ulf Simonsen (AAU), Hua Lu (Roskilde University), Maite Ainciburu (Polytech Montpellier)


MAT-Builder: a System to Build Semantically Enriched Trajectories

Chiara Pugliese (ISTI Institute of National Research Council), Francesco Lettich (ISTI Institute of National Research Council), Chiara Renso (ISTI-CNR),; Fabio Pinelli (IMT Lucca)


A Dashboard tool for Mobility Data Mining Preprocessing Tasks

Yaksh J Haranwala (Memorial University of Newfoundland), Salman Haidri (Memorial University of Newfoundland), Terrence Tricco (Memorial University of Newfoundland), Vinicius Prado da Fonseca (Memorial University of Newfoundland), Amilcar Soares (Memorial University of Newfoundland)


AutoMATize: Multi-Aspect Trajectory Data Mining Tool Library

Tarlis T Portela (Federal University of Santa Catarina, University of Pisa, ISTI-CNR), Vania Bogorny (Federal University of Santa Catarina), Anna Bernasconi (University of Pisa, Italy), Chiara Renso (ISTI-CNR)


A framework for supporting privacy preservation functions in a Mobile Cloud Environment

Dimitrios Tomaras (Athens University of Economics and Business), Michail Tsenos (Athens University of Economics and Business), Vana Kalogeraki (Athens University of Economics and Business, Greece)


AnyplaceCV: Infrastructure-less Localization in Anyplace with Computer Vision

Paschalis Mpeis (University of Cyprus), Athina Hadjichristodoulou (University of Cyprus), Ioannis Ioannidis (University of Cyprus), Demetrios Zeinalipour-Yazti (University of Cyprus)


A Mobility-based Recommendation System for Mitigating the Risk of Infection during Epidemics

Gian Alix (York University), Nina Yanin (York University – student), Tilemachos Pechlivanoglou (York University), Jing Li (York University), Farzaneh Heidari (York University), Manos Papagelis (York University)


GoMap Verification: A Labelled Traffic Sign Source

Kristian Torp (Aalborg University), Kasper Fromm Pedersen (Aalborg University)


MapsVision: A Computer Vision-based System for Detecting Discrepancies in Map Textual Labels

Adel Sabour (University of Washington), JIAWEI YAO (University of Washington Tacoma), Abdulrahman Salama (University of Washington), Cordel Hampshire (University of Washington), Eyhab Al-Masri (University of Washington), Mohamed Ali (University of Washington), Harsh Govind (Microsoft Corporation), Ming Tan (Microsoft Corporation), Vashutosh Agrawal (Microsoft Corporation), Egor Maresov (Microsoft Corporation), Ravi Prakash (Microsoft Corporation)


CovidLens: Visually Understanding the Covid-19 Indicators through the lens of Mobility Data

Mohamed Sharaf (United Arab Emirates University), Xiaozhong Zhang (University of Pittsburgh), Panos K. Chrysanthis (University of Pittsburgh), Wadima Alsaedi (United Arab Emirates University), Maitha Alkalbani (United Arab Emirates University), Heba Helal (United Arab Emirates University), Alyazia Aldhaheri (United Arab Emirates University)


Targeted Content-Sharing in a Multi-group DTN Application using Attribute-Based Encryption

Xiaofei Cao (Missouri University of Science and Technology), Sudip Datta (Missouri University of Science and Technology), Sanjay Kumar Madria (Missouri University of Science & Technology, USA)


Efficient Detection of COVID-19 Exposure Risk

Brian Nixon (University of Pittsburgh), Rakan Alseghayer (University of Pittsburgh), Constantinos Costa (University of Pittsburgh), Benjamin Graybill (University of Pittsburgh), Xiaozhong Zhang (University of Pittsburgh), Panos K. Chrysanthis (University of Pittsburgh)


EnterCY: A Virtual and Augmented Reality Tourism Platform for Cyprus

Soteris Constantinou (University of Cyprus), Andreas Pamboris (Frederick University), Rafael Alexandrou (Frederick University), Christophoros Kronis (Frederick University), Demetrios Zeinalipour-Yazti (University of Cyprus), Harris Papadopoulos (Frederick University), Andreas Konstantinidis (Frederick University)


Jarvis: A Voice-based Context-as-a-Service Mobile Tool for a Smart Home Environment

Ngoc Dung Huynh (Deakin University), Mohamed Reda Bouadjenek (Deakin University), Ali Hassani (Deakin University), Imran Razzak (Deakin University), Kevin Lee (Deakin University), Chetan Arora (Deakin University), Arkady Zaslavsky (Deakin University)


PhD Forum Track


Spatial Queries for Indoor Location-based Services

Tiantian Liu (Aalborg University)


Blockchain Data Management for IoT Applications

Panagiotis Drakatos (University of Cyprus)


Spatial Regionalization: New Frontiers and Applications

Hussah Alrashid (University of California Riverside)


Sharing and Generating Privacy-Preserving Spatio-Temporal Data Using Real-World Knowledge

Teddy Cunningham (University of Warwick)


Collaborative Geographic Area Surveillance by System of Drones

Prabin Giri (Iowa State University)


Cleansing and Analytics of Indoor Positioning

Data Xiao Li (Roskilde University)


Scalable Spatial Queries in Big Data Systems

Laila Abdelhafeez (University of California, Riverside)