Keynote speech (20 mins)

09:00 - 09:20: Learning from Movement: Trajectory Data for Mobility Analytics

Session 1: Learning from Trajectories: Generative Models, Prediction, and Maritime Intelligence (70 mins) (10 min + 2 min Q&A)

09:20 - 09:32: Privacy Evaluation of Generative Models for Trajectory Generation

Stavros Bouras, Ioannis Kontopoulos, Chiara Pugliese, Francesco Lettich, Emanuele Carlini, Hanna Kavalionak, Chiara Renso and Konstantinos Tserpes.

09:32 - 09:44: Leveraging Retrieval-Augmented Generation for Lightweight Geo-Location Modeling

John Violos, Georgios Vasileiadis and Aris Leivadeas.

09:44 - 09:56: Rank-Revealing Nonnegative Block-Term Tensor Decomposition for Incomplete Trajectory Data Mining

Eleftherios Kofidis.

09:56 - 10:08: Human Mobility Prediction with POI-Enhanced Representation and Time-Slot Weighted Masking

Jikyoung Hong, Taehoon Kim, Jeeyoung Kim and Kyoung-Sook Kim.

10:08 - 10:20: Learning Compressed AIS Trajectories with VQ-VAE for Activity Classification

Christos Chronis, Spyridon Chatziargyros, Magdalini Eirinaki, Konstantinos Tserpes and Iraklis Varlamis.

10:20 - 10:30: Detecting AIS Transmission Gaps using Spatio-Temporal Kinematics of Marine Trajectories

Yağız Çimen and Engin Demir.

Session 2: Multi-Modal Perspectives on Trajectory Modeling (90 mins) (13 min + 2 min Q&A)

11:00 - 11:15: Trajectory-Aware Adaptive Inference in Object Detection Models

Grigorios Papanikolaou, Ioannis Kontopoulos, Giannis Spiliopoulos, Dimitris Zissis and Konstantinos Tserpes.

11:15 - 11:30: Trajectory Imputation Using Computer Vision Models

Panagiotis Betchavas, Alexandros Troupiotis-Kapeliaris, Kostas Patroumpas, Giannis Spiliopoulos, Dimitrios Skoutas, Dimitris Zissis and Nikos Bikakis.

11:30 - 11:45: Video Reconstruction using Diffusion-based Image-to-Video Generation with Trajectory Guidance

Stelio Bompai, Ioannis Kontopoulos, Giannis Spiliopoulos, Dimitris Zissis and Konstantinos Tserpes.

11:45 - 12:00: Transportation Mode Classification from GPS Trajectories Using Graph Attention Networks

Sangrez Khan, Umar Farooq, John Violos, Emanuele Carlini, Hanna Kavalionak and Aris Leivadeas.

12:00 - 12:15: Toward a General Graph-Based Abstraction Approach for Urban Trajectory Generation

Hanna Kavalionak, Chiara Pugliese, Emanuele Carlini, Chiara Renso, Thierry Chevallier, Guillaume Vangilluwen and Vincent Delmas.

12:15 - 12:30: Sustainable Indoor Trajectory Modeling through Participatory Sensing and WiFi Signal Fusion

Konstantinos Vogklis, Ioannis Nasios, Anastasia Vayona and Vasilis Katos.

Workshop Keynote: TBD

1. TwinLoop: Simulation-in-the-Loop Digital Twins for Online Multi-Agent Reinforcement Learning

Nan Zhang, Zishuo Wang, Shuyu Huang, Georgios Diamantopoulos, Nikos Tziritas, Panagiotis Oikonomou and Georgios Theodoropoulos

2. Integrating Heterogeneous Digital Twins in Federated Ecosystems

Christian Vergara Marcillo, Rami Bahsoon, Nikos Tziritas, Wendy Yanez-Pazmino, Panagiotis Oikonomou and Georgios Theodoropoulos

3. IoT-Integrated Hybrid Machine Learning for Short-Term Raw Water Quality Forecasting

Dulashi Fernando, Samadhi Cooray, Praveen Jeyachandran, Dileesha Jayakodi, Prasanna Sumathipala and Salih Fousdeen

1. Graph-Based Risk Modeling in Food Supply Chains with Digital Product Passports

Spyridon Evangelatos, Amalia Ntemou, Angelina Katsifaraki, Paraskevas Bourgos, Nikoleta Tsampanaki, Nikos Kefalakis, Themistoklis Anagnostopoulos and Pantelis Lappas

2. Leader Election Algorithms for Vehicle Platooning: A Survey Focusing on Resilience to Member Failures

Chinmay Shrivastav, Francesco Castorini, Alessio Masola, Paolo Burgio and Roberto Cavicchioli

3. Resources and Events Management in Synchromodal Logistic Operations

Panagiotis Fountas, Nikolaos Tymplalexis, Konstantinos Ntatis, Christos Kylafas, Anestis Papakotoulas, Vassilis Papataxiarhis, Kostas Kolomvatsos and Stathes Hadjiefthymiades

4. A Distributed Semantic Layer for Logistics Data Integration

Anestis Papakotoulas, Vassilis Papataxiarhis, Stathes Hadjiefthymiades, Savvas Apostolidis and Theofilos Triommatis

5. Design and Implementation of a Serverless MapReduce Framework for Scalable Data Pipelines

Angelos Dorotheos Chatzopoulos, Babis Andreou, Kakia Panagidi and Stathes Hadjiefthymiades

6. Secure mobile communications: a spatially sensitive approach

Dimitra Zisimopoulou and Stathes Hadjiefthymiades

7. Towards Cloud-Native Logistics Optimization: Decomposing Supply Chain Operations into Serverless Microservices

Konstantinos Christou, Konstantinos Davinos, Babis Andreou, Kakia Panagidi and Stathes Hadjiefthymiades

13:30 - 14:20: Keynote Speaker: Alexandros Gkillas, OmniLoc.ai & Athena Research Center

Keynote Title: Structured Signal Processing and Learning for Robust Autonomous Systems: From Data and System Dependencies to Adversarial Resilience

14:20 - 14:40: 1. Enabling Adversarial Robustness in AI Models through Kubeflow MLOps

Stavros Bouras, Ioannis Korontanis, Antonios Makris and Konstantinos Tserpes.

14:40 - 15:00: 2. MEDIATE: Multi-Faceted Implementation of A Mixed Software/Hardware-Based Zero Trust Framework for the Computing Continuum

Apostolos Fournaris, Evangelos Haleplidis, Shahin Abdoul-Soukour, Chih-Kai Huang, Niemat Khoder, Georgios Bouloukakis, Andreas Brokalakis, Konstantinos Georgopoulos and Sotiris Ioannidis.

15:15 - 15:35: 3. Verifiable Data Sovereignty for Vulnerable Populations in Participatory Data Spaces

Panagiotis Katrakazas and Antonios Ntib.

15:35 - 15:55: 4. Spatial Analysis on Value-Based Quadtrees of Rasterized Vector Data

Diana Baumann, Nils Japke, Tim C. Rese and David Bermbach.

15:55 - 16:10: 5. EKYCense: Trustworthy Identity Verification for Secure Urban Data Spaces - A Hybrid Neural-Symbolic Framework with Intrinsic Explainability

Senitha Lanerolle.

Human-enabled Edge Computing: Convergence of Mobile CrowdSensing and Multi-access Edge Computing for Next-Generation Smart Systems

Luca Foschini (University of Bologna)
Michele Girolami (ISTI-CNR)

Spatial Fairness in Algorithmic Decision Making: Concepts, Detection, and Mitigation

Dimitris Kyriakopoulos (Athena Research Center, Greece)
Dimitris Sacharidis (Université Libre de Bruxelles, Belgium)
Giorgos Giannopoulos (National Observatory of Athens and Athena Research Center, Greece)