Publications

Loukas Kavouras, Eleni Psaroudaki, Konstantinos Tsopelas, Dimitrios Rontogiannis, Nikolaos Theologitis, Dimitris Sacharidis, Giorgos Giannopoulos, Dimitrios Tomaras, Kleopatra Markou, Dimitrios Gunopulos, Dimitris Fotakis, Ioannis Z. Emiris (2026). GLANCE: Global Actions in a Nutshell for Counterfactual Explainability. The Fortieth AAAI Conference on Artificial Intelligence (AAAI-26).

PDF Cite Code Rank A*

Antonios Kontaxakis, Dimitris Sacharidis, Alberto Abelló, Sergi Nadal, Alkis Simitsis (2026). CAPS: Cost-Aware ML Pipeline Selection. Proc. VLDB Endow..

PDF Cite Rank A*

Ikhtiyor Nematov, Tarik Kalai, Elizaveta Kuzmenko, Gabriele Fugagnoli, Dimitris Sacharidis, Katja Hose, Tomer Sagi (2025). Source Attribution in Retrieval-Augmented Generation. CoRR.

PDF Cite DOI URL

Dimitris Kyriakopoulos, Dimitris Sacharidis, Giorgos Giannopoulos, Dimitrios Gunopulos, Theodore Dalamagas (2025). PROMIS: A Post-Processing Framework for Mitigating Spatial Bias. Proceedings of the 33rd ACM International Conference on Advances in Geographic Information Systems, SIGSPATIAL 2025, The Graduate Hotel Minneapolis, Minneapolis, MN, USA, November 3-6, 2025.

PDF Cite DOI URL

Clio Andris, Panagiotis Bouros, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2025). Proceedings of the 8th ACM SIGSPATIAL International Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising, LocalRec 2024, Atlanta, GA, USA, October 29 - November 1, 2024. ACM.

PDF Cite DOI URL

Jean-Paul Kasprzyk, Roland Billen, Sandro Bimonte, Laurent D'Orazio, Dimitris Sacharidis, Piotr Skrzypczynski, Robert Wrembel (2025). On Integrating Robotic Data with GIS Tools in a Cloud Environment. Proceedings of the Workshops of the EDBT/ICDT 2025 Joint Conference co-located with the EDBT/ICDT 2025 Joint Conference, Barcelona, Spain, March 25, 2025.

PDF Cite

Stavros Davidopoulos, Panagiotis Symeonidis, Dimitris Sacharidis (2025). Individual Fairness in Algorithmic Hiring. European Workshop on Algorithmic Fairness, 30-2 July 2025, Eindhoven University of Technology, Eindhoven, The Netherlands.

PDF Cite URL

Antonios Kontaxakis, Dimitris Sacharidis, Alkis Simitsis, Alberto Abelló, Sergi Nadal (2025). Hyppo: Efficient Discovery and Execution of Data Science Pipelines in Collaborative Environments. Proceedings 28th International Conference on Extending Database Technology, EDBT 2025, Barcelona, Spain, March 25-28, 2025.

PDF Cite DOI URL

Md Ataur Rahman, Sergi Nadal, Oscar Romero, Dimitris Sacharidis (2024). Mitigating Data Sparsity in Integrated Data through Text Conceptualization. ICDE 2024 - 40th International Conference on Extending Database Technology.

PDF Cite Code Rank A*

Antonios Kontaxakis, Dimitris Sacharidis, Alkis Simitsis, Alberto Abelló, Sergi Nadal (2024). HYPPO - Using Equivalences to Optimize Pipelines in Exploratory Machine Learning. ICDE 2024 - 40th International Conference on Extending Database Technology.

PDF Cite Code Rank A*

Ikhtiyor Nematov, Dimitris Sacharidis, Tomer Sagi, Katja Hose (2024). The Susceptibility of Example-Based Explainability Methods to Class Outliers. CoRR.

PDF Cite DOI URL

Sandro Bimonte, Gianni Bellocchi, François Pinet, Guillaume Charrier, Dimitris Sacharidis, Mahmoud Attia Sakr, Ronan Tournier, Gentian Jakllari, Gérard Chalhoub, M. Tahar Kechadi, Boualem Benatallah, Francesco Marinello, Roberto Oberti, Jérôme Bindelle, Ginta Majore, Piotr Skrzypczynski (2024). Technological and Research Challenges in Data Engineering for Sustainable Agriculture. Proceedings of the International Workshop on Big Data in Emergent Distributed Environments, BiDEDE 2024, Santiago, Chile, June 9-15, 2024.

PDF Cite DOI URL

Mohamed F. Mokbel, Mahmoud Attia Sakr, Li Xiong, Andreas Züfle, Jussara M. Almeida, Taylor Anderson, Walid G. Aref, Gennady L. Andrienko, Natalia v. Andrienko, Yang Cao, Sanjay Chawla, Reynold Cheng, Panos K. Chrysanthis, Xiqi Fei, Gabriel Ghinita, Anita Graser, Dimitrios Gunopulos, Christian S. Jensen, Joon-Seok Kim, Kyoung-Sook Kim, Peer Kröger, John Krumm, Johannes Lauer, Amr Magdy, Mario A. Nascimento, Siva Ravada, Matthias Renz, Dimitris Sacharidis, Flora D. Salim, Mohamed Sarwat, Maxime Schoemans, Cyrus Shahabi, Bettina Speckmann, Egemen Tanin, Xu Teng, Yannis Theodoridis, Kristian Torp, Goce Trajcevski, Marc J. Van Kreveld, Carola Wenk, Martin Werner, Raymond Chi-Wing Wong, Song Wu, Jianqiu Xu, Moustafa Youssef, Demetris Zeinalipour, Mengxuan Zhang, Esteban Zimányi (2024). Mobility Data Science: Perspectives and Challenges. ACM Trans. Spatial Algorithms Syst..

PDF Cite DOI URL

Ioannis Z. Emiris, Dimitris Fotakis, Giorgos Giannopoulos, Dimitrios Gunopulos, Loukas Kavouras, Kleopatra Markou, Eleni Psaroudaki, Dimitrios Rontogiannis, Dimitris Sacharidis, Nikolaos Theologitis, Dimitrios Tomaras, Konstantinos Tsopelas (2024). GLANCE: Global Actions in a Nutshell for Counterfactual Explainability. CoRR.

PDF Cite DOI URL

Giorgos Giannopoulos, Dimitris Sacharidis, Nikolaos Theologitis, Loukas Kavouras, Ioannis Z. Emiris (2024). FALE: Fairness-Aware ALE Plots for Auditing Bias in Subgroups. CoRR.

PDF Cite DOI URL

Giorgos Giannopoulos, Maria Psalla, Loukas Kavouras, Dimitris Sacharidis, Jakub Marecek, German M. Matilla, Ioannis Z. Emiris (2024). Fairness in AI: challenges in bridging the gap between algorithms and law. 40th International Conference on Data Engineering, ICDE 2024 - Workshops, Utrecht, Netherlands, May 13-16, 2024.

PDF Cite DOI URL

Giorgos Giannopoulos, Maria Psalla, Loukas Kavouras, Dimitris Sacharidis, Jakub Marecek, German M. Matilla, Ioannis Z. Emiris (2024). Fairness in AI: challenges in bridging the gap between algorithms and law. CoRR.

PDF Cite DOI URL

Ikhtiyor Nematov, Dimitris Sacharidis, Tomer Sagi, Katja Hose (2024). AIDE: Antithetical, Intent-based, and Diverse Example-Based Explanations. CoRR.

PDF Cite DOI URL

Ikhtiyor Nematov, Dimitris Sacharidis, Katja Hose, Tomer Sagi (2024). AIDE: Antithetical, Intent-based, and Diverse Example-Based Explanations. AIES.

PDF Cite DOI URL

Christos Daoulas, Dimitris Sacharidis (2024). A FAIR Public Permissioned Blockchain System for monitoring Deforestation in the Amazon. Proceedings of the 8th ACM SIGSPATIAL International Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising, LocalRec 2024, Atlanta, GA, USA, October 29 - November 1, 2024.

PDF Cite DOI URL

Dimitris Sacharidis, Giorgos Giannopoulos, George Papastefanatos, Kostas Stefanidis (2023). Auditing for Spatial Fairness. Proceedings 26th International Conference on Extending Database Technology, EDBT 2023, Ioannina, Greece, March 28-31, 2023.

PDF Cite Code Slides DOI arXiv URL Rank A

Loukas Kavouras, Konstantinos Tsopelas, Giorgos Giannopoulos, Dimitris Sacharidis, Eleni Psaroudaki, Nikolaos Theologitis, Dimitrios Rontogiannis, Dimitris Fotakis, Ioannis Z. Emiris (2023). Fairness Aware Counterfactuals for Subgroups. NeurIPS 2023 - 37th Conference on Neural Information Processing Systems.

PDF Cite Code DOI arXiv URL Rank A*

Mohamed F. Mokbel, Mahmoud Attia Sakr, Li Xiong, Andreas Züfle, Jussara M. Almeida, Taylor Anderson, Walid G. Aref, Gennady L. Andrienko, Natalia v. Andrienko, Yang Cao, Sanjay Chawla, Reynold Cheng, Panos K. Chrysanthis, Xiqi Fei, Gabriel Ghinita, Anita Graser, Dimitrios Gunopulos, Christian S. Jensen, Joon-Sook Kim, Kyoung-Sook Kim, Peer Kröger, John Krumm, Johannes Lauer, Amr Magdy, Mario A. Nascimento, Siva Ravada, Matthias Renz, Dimitris Sacharidis, Cyrus Shahabi, Flora D. Salim, Mohamed Sarwat, Maxime Schoemans, Bettina Speckmann, Egemen Tanin, Xu Teng, Yannis Theodoridis, Kristian Torp, Goce Trajcevski, Marc J. Van Kreveld, Carola Wenk, Martin Werner, Raymond Chi-Wing Wong, Song Wu, Jianqiu Xu, Moustafa Youssef, Demetris Zeinalipour, Mengxuan Zhang, Esteban Zimányi (2023). Towards Mobility Data Science (Vision Paper). CoRR.

PDF Cite DOI arXiv URL

Víctor Arroyo, Dimitris Sacharidis (2023). SpatialFlip: A Postprocessing Method to Improve Spatial Fairness. Proceedings of the 31st ACM International Conference on Advances in Geographic Information Systems, SIGSPATIAL 2023, Hamburg, Germany, November 13-16, 2023.

PDF Cite DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2023). Proceedings of the 7th ACM SIGSPATIAL Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising, LocalRec 2023, Hamburg, Germany, 13 November 2023. ACM.

PDF Cite DOI URL

Giorgos Giannopoulos, Dimitris Sacharidis, Nikolaos Theologitis, Loukas Kavouras, Ioannis Z. Emiris (2023). FALE: Fairness-Aware ALE Plots for Auditing Bias in Subgroups. Machine Learning and Principles and Practice of Knowledge Discovery in Databases - International Workshops of ECML PKDD 2023, Turin, Italy, September 18-22, 2023, Revised Selected Papers, Part II.

PDF Cite DOI URL

Loukas Kavouras, Konstantinos Tsopelas, Giorgos Giannopoulos, Dimitris Sacharidis, Eleni Psaroudaki, Nikolaos Theologitis, Dimitrios Rontogiannis, Dimitris Fotakis, Ioannis Z. Emiris (2023). Fairness Aware Counterfactuals for Subgroups. CoRR.

PDF Cite DOI URL

Dimitris Sacharidis, Giorgos Giannopoulos, George Papastefanatos, Kostas Stefanidis (2023). Auditing for Spatial Fairness. CoRR.

PDF Cite DOI URL

Antonios Kontaxakis, Nikos Giatrakos, Dimitris Sacharidis, Antonios Deligiannakis (2023). And synopses for all: A synopses data engine for extreme scale analytics-as-a-service. Inf. Syst..

PDF Cite DOI URL

Angelo Antonio Salatino, Yu Bu, Ying Ding, Ágnes Horvát, Yong Huang, Meijun Liu, Paolo Manghi, Andrea Mannocci, Francesco Osborne, Daniel M. Romero, Dimitris Sacharidis, Misha Teplitskiy, Thanasis Vergoulis, Feng Xia, Yujia Zhai (2023). 3rd International Workshop on Scientific Knowledge Representation, Discovery, and Assessment (Sci-K 2023). Companion Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023.

PDF Cite DOI URL

Alexandros Zeakis, Dimitrios Skoutas, Dimitris Sacharidis, Odysseas Papapetrou, Manolis Koubarakis (2022). TokenJoin: Efficient Filtering for Set Similarity Join with Maximum Weighted Bipartite Matching. Proc. VLDB Endow..

PDF Cite Code DOI Rank A*

Paolo Manghi, Andrea Mannocci, Francesco Osborne, Dimitris Sacharidis, Angelo A. Salatino, Thanasis Vergoulis (2022). Sci-K 2022 - International Workshop on Scientific Knowledge: Representation, Discovery, and Assessment. Companion of The Web Conference 2022, Virtual Event / Lyon, France, April 25 - 29, 2022.

Cite DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2022). Proceedings of the 6th ACM SIGSPATIAL International Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising, LocalRec 2022, Seattle, Washington, USA, 1 November 2022. ACM.

Cite DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2022). Proceedings of the 6th ACM SIGSPATIAL International Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising, LocalRec 2022, Seattle, Washington, USA, 1 November 2022. ACM.

Cite DOI URL

Mohamed F. Mokbel, Mahmoud Attia Sakr, Li Xiong, Andreas Züfle, Jussara M. Almeida, Taylor Anderson, Walid G. Aref, Gennady L. Andrienko, Natalia v. Andrienko, Yang Cao, Sanjay Chawla, Reynold Cheng, Panos K. Chrysanthis, Xiqi Fei, Gabriel Ghinita, Anita Graser, Dimitrios Gunopulos, Christian S. Jensen, Joon-Sook Kim, Kyoung-Sook Kim, Peer Kröger, John Krumm, Johannes Lauer, Amr Magdy, Mario A. Nascimento, Siva Ravada, Matthias Renz, Dimitris Sacharidis, Cyrus Shahabi, Flora D. Salim, Mohamed Sarwat, Maxime Schoemans, Bettina Speckmann, Egemen Tanin, Yannis Theodoridis, Kristian Torp, Goce Trajcevski, Marc J. Van Kreveld, Carola Wenk, Martin Werner, Raymond Chi-Wing Wong, Song Wu, Jianqiu Xu, Moustafa Youssef, Demetris Zeinalipour, Mengxuan Zhang, Esteban Zimányi (2022). Mobility Data Science (Dagstuhl Seminar 22021). Dagstuhl Reports.

PDF Cite DOI URL

Kostas Patroumpas, Dimitrios Skoutas, Dimitris Sacharidis (2022). MAGE: Discovering Mixture-based Areas of Interest over Geolocated Entities. Proceedings of the 25th International Conference on Extending Database Technology, EDBT 2022, Edinburgh, UK, March 29 - April 1, 2022.

PDF Cite DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2022). LocalRec 2022 Workshop Report: The Sixth ACM SIGSPATIAL Workshop on Location-Based Recommendations, Geosocial Networks and Geoadvertising Seattle, Washington, USA, November 1, 2022. ACM SIGSPATIAL Special.

Cite DOI URL

Ilias Kanellos, Dimitris Sacharidis, Thanasis Vergoulis (2022). Assessing Research Impact by Leveraging Open Scholarly Knowledge Graphs. Companion of The Web Conference 2022, Virtual Event / Lyon, France, April 25 - 29, 2022.

Project Slides Video DOI URL Rank A*

Riccardo Tommasini, Senjuti Basu Roy, Xuan Wang, Hongwei Wang, Heng Ji, Jiawei Han, Preslav Nakov, Giovanni Da San Martino, Firoj Alam, Markus Schedl, Elisabeth Lex, Akash Bharadwaj, Graham Cormode, Milan Dojchinovski, Jan Forberg, Johannes Frey, Pieter Bonte, Marco Balduini, Matteo Belcao, Emanuele Della Valle, Junliang Yu, Hongzhi Yin, Tong Chen, Haochen Liu, Yiqi Wang, Wenqi Fan, Xiaorui Liu, Jamell Dacon, Lingjuan Lye, Jiliang Tang, Aristides Gionis, Stefan Neumann, Bruno Ordozgoiti, Simon Razniewski, Hiba Arnaout, Shrestha Ghosh, Fabian M. Suchanek, Lingfei Wu, Yu Chen, Yunyao Li, Bang Liu, Filip Ilievski, Daniel Garijo, Hans Chalupsky, Pedro A. Szekely, Ilias Kanellos, Dimitris Sacharidis, Thanasis Vergoulis, Nurendra Choudhary, Nikhil Rao, Karthik Subbian, Srinivasan H. Sengamedu, Chandan K. Reddy, Friedhelm Victor, Bernhard Haslhofer, George Katsogiannis-Meimarakis, Georgia Koutrika, Shengmin Jin, Danai Koutra, Reza Zafarani, Yulia Tsvetkov, Vidhisha Balachandran, Sachin Kumar, Xiangyu Zhao, Bo Chen, Huifeng Guo, Yejing Wang, Ruiming Tang, Yang Zhang, Wenjie Wang, Peng Wu, Fuli Feng, Xiangnan He (2022). Accepted Tutorials at The Web Conference 2022. Companion of The Web Conference 2022, Virtual Event / Lyon, France, April 25 - 29, 2022.

Cite DOI URL

Daniel Defiebre, Dimitris Sacharidis, Panagiotis Germanakos (2022). A human-centered decentralized architecture and recommendation engine in SIoT. User Model. User Adapt. Interact..

PDF Cite DOI URL

Karim Benouaret, Dimitris Sacharidis, Djamal Benslimane, Allel Hadjali (2021). Selecting Services for Multiple Users: Let's Be Democratic. IEEE Transactions on Services Computing (TSC).

PDF Cite DOI URL

Ilias Kanellos, Thanasis Vergoulis, Dimitris Sacharidis, Theodore Dalamagas, Yannis Vassiliou (2021). Ranking Papers by their Short-Term Scientific Impact. 37th IEEE International Conference on Data Engineering, ICDE 2021, Chania, Greece, April 19-22, 2021.

PDF Cite Slides Video DOI URL Rank A*

Ilias Kanellos, Thanasis Vergoulis, Dimitris Sacharidis (2021). Ranking Papers by Expected Short-Term Impact. Predicting the Dynamics of Research Impact.

Cite DOI URL

Paolo Manghi, Andrea Mannocci, Francesco Osborne, Dimitris Sacharidis, Angelo A. Salatino, Thanasis Vergoulis (2021). New trends in scientific knowledge graphs and research impact assessment. Quant. Sci. Stud..

PDF Cite DOI URL

Vassilis Kaffes, Dimitris Sacharidis, Giorgos Giannopoulos (2021). Model-Agnostic Counterfactual Explanations of Recommendations. Proceedings of the 29th ACM Conference on User Modeling, Adaptation and Personalization, UMAP 2021, Utrecht, The Netherlands, June, 21-25, 2021.

PDF Cite Code Slides Video DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2021). LocalRec 2021 Workshop Report: The Fifth ACM SIGSPATIAL Workshop on Location-Based Recommendations, Geosocial Networks and Geoadvertising: online event - November 2, 2021. ACM SIGSPATIAL Special.

Cite DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2021). LocalRec '21: Proceedings of the 5th ACM SIGSPATIAL International Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising, Virtual Event / Beijing, China, 2 November 2021. ACM.

Cite DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2021). LocalRec '21: Proceedings of the 5th ACM SIGSPATIAL International Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising, Virtual Event / Beijing, China, 2 November 2021. ACM.

Cite DOI URL

Giorgos Giannopoulos, George Papastefanatos, Dimitris Sacharidis, Kostas Stefanidis (2021). Interactivity, Fairness and Explanations in Recommendations. Adjunct Publication of the 29th ACM Conference on User Modeling, Adaptation and Personalization, UMAP 2021, Utrecht, The Netherlands, June 21-25, 2021.

PDF Cite DOI URL

Ilias Kanellos, Thanasis Vergoulis, Dimitris Sacharidis, Theodore Dalamagas, Yannis Vassiliou (2021). Impact-Based Ranking of Scientific Publications: A Survey and Experimental Evaluation. IEEE Trans. Knowl. Data Eng..

PDF Cite DOI URL

Dimitrios Skoutas, Dimitris Sacharidis, Kostas Patroumpas (2021). Discovering Mixture-Based Best Regions of Arbitrary Shapes. SIGSPATIAL ‘21: 29th International Conference on Advances in Geographic Information Systems, Virtual Event / Beijing, China, November 2-5, 2021.

PDF Cite DOI URL

Johannes Luef, Christian Ohrfandl, Dimitris Sacharidis, Hannes Werthner (2020). A Recommender System for Investing in Early-Stage Enterprises. ACM/SIGAPP Symposium on Applied Computing (SAC).

PDF Cite DOI

Elaheh Pourabbas, Dimitris Sacharidis, Kurt Stockinger, Thanasis Vergoulis (2020). SSDBM 2020: 32nd International Conference on Scientific and Statistical Database Management, Vienna, Austria, July 7-9, 2020. ACM.

Cite DOI URL

Elaheh Pourabbas, Dimitris Sacharidis, Kurt Stockinger, Thanasis Vergoulis (2020). SSDBM 2020: 32nd International Conference on Scientific and Statistical Database Management, Vienna, Austria, July 7-9, 2020. ACM.

Cite DOI URL

Ilias Kanellos, Thanasis Vergoulis, Dimitris Sacharidis, Theodore Dalamagas, Yannis Vassiliou (2020). Ranking Papers by their Short-Term Scientific Impact. Computing Research Repository (CoRR).

PDF Cite arXiv URL

Ilias Kanellos, Thanasis Vergoulis, Dimitris Sacharidis, Theodore Dalamagas, Yannis Vassiliou (2020). Ranking Papers by their Short-Term Scientific Impact. CoRR.

Cite URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2020). Proceedings of the 4th ACM SIGSPATIAL Workshop on Location-Based Recommendations, Geosocial Networks, and Geoadvertising (LocalRec). ACM.

Cite DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2020). LocalRec 2020 Workshop Report: The Fourth ACM SIGSPATIAL Workshop on Location-Based Recommendations, Geosocial Networks and Geoadvertising (LocalRec). ACM SIGSPATIAL Special.

Cite DOI URL

Dimitris Sacharidis, Carine Pierrette Mukamakuza, Hannes Werthner (2020). Fairness and Diversity in Social-Based Recommender Systems. ACM Conference on User Modeling, Adaptation and Personalization (UMAP), Adjunct Publication.

PDF Cite DOI URL

Michael Ion, Dimitris Sacharidis, Hannes Werthner (2020). Designing a recommender system for board games. ACM/SIGAPP Symposium on Applied Computing (SAC).

PDF Cite DOI URL

Ladjel Bellatreche, Fadila Bentayeb, Mária Bieliková, Omar Boussaid, Barbara Catania, Paolo Ceravolo, Elena Demidova, Mírian Halfeld Ferrari, María Teresa Gómez López, Carmem S. Hara, Slavica Kordic, Ivan Lukovic, Andrea Mannocci, Paolo Manghi, Francesco Osborne, Christos Papatheodorou, Sonja Ristic, Dimitris Sacharidis, Oscar Romero, Angelo A. Salatino, Guilaine Talens, Maurice Van Keulen, Thanasis Vergoulis, Maja Zumer (2020). Databases and Information Systems in the AI Era: Contributions from ADBIS, TPDL and EDA 2020 Workshops and Doctoral Consortium. ADBIS, TPDL and EDA 2020 Common Workshops and Doctoral Consortium - International Workshops: DOING, MADEISD, SKG, BBIGAP, SIMPDA, AIMinScience 2020 and Doctoral Consortium, Lyon, France, August 25-27, 2020, Proceedings.

PDF Cite DOI URL

Daniel Defiebre, Panagiotis Germanakos, Dimitris Sacharidis (2020). DANOS: A Human-Centered Decentralized Simulator in SIOT. ACM Conference on User Modeling, Adaptation and Personalization (UMAP), Adjunct Publication.

PDF Cite DOI URL

Dimitris Sacharidis (2020). Building User Trust in Recommendations via Fairness and Explanations. ACM Conference on User Modeling, Adaptation and Personalization (UMAP), Adjunct Publication.

PDF Cite Slides Video DOI URL

Daniel Defiebre, Dimitris Sacharidis, Panagiotis Germanakos (2020). A Decentralized Recommendation Engine in the Social Internet of Things. ACM Conference on User Modeling, Adaptation and Personalization (UMAP), Adjunct Publication.

PDF Cite DOI URL

Dimitris Sacharidis (2019). Top-N group recommendations with fairness. ACM/SIGAPP Symposium on Applied Computing (SAC).

PDF Cite Code DOI URL

Carine Pierrette Mukamakuza, Dimitris Sacharidis, Hannes Werthner (2019). The Role of Activity and Similarity in Rating and Social Behavior in Social Recommender Systems. International Journal on Artificial Intelligence Tools (IJAIT).

PDF Cite DOI URL

Carine Pierrette Mukamakuza, Dimitris Sacharidis, Hannes Werthner (2019). The Impact of Social Connections in Personalization. ACM Conference on User Modeling, Adaptation and Personalization (UMAP), Adjunct Publication.

PDF Cite DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2019). Proceedings of the 3rd ACM SIGSPATIAL Workshop on Location-Based Recommendations, Geosocial Networks and Geoadvertising (LocalRec). ACM.

Cite URL

Walid G. Aref, Michela Bertolotto, Panagiotis Bouros, Christian S. Jensen, Ahmed R. Mahmood, Kjetil Nørvåg, Dimitris Sacharidis, Mohamed Sarwat (2019). Proceedings of the 16th International Symposium on Spatial and Temporal Databases, SSTD 2019, Vienna, Austria, August 19-21, 2019. ACM.

Cite DOI URL

Walid G. Aref, Michela Bertolotto, Panagiotis Bouros, Christian S. Jensen, Ahmed Mahmood, Kjetil Nørvåg, Dimitris Sacharidis, Mohamed Sarwat (2019). Proceedings of the 16th International Symposium on Spatial and Temporal Databases, SSTD 2019, Vienna, Austria, August 19-21, 2019. ACM.

Cite DOI URL

Dimitris Sacharidis (2019). Modeling Uncertainty in Group Recommendations. ACM Conference on User Modeling, Adaptation and Personalization (UMAP), Adjunct Publication.

PDF Cite DOI URL

Panagiotis Bouros, Tamraparni Dasu, Yaron Kanza, Matthias Renz, Dimitris Sacharidis (2019). LocalRec 2019 Workshop Report: The Third ACM SIGSPATIAL Workshop on Location-Based Recommendations, Geosocial Networks and Geoadvertising (LocalRec). ACM SIGSPATIAL Special.

Cite DOI URL

Dimitris Sacharidis (2019). Diversity and Novelty in Social-Based Collaborative Filtering. ACM Conference on User Modeling, Adaptation and Personalization (UMAP).

PDF Cite DOI URL

Leonard Weydemann, Dimitris Sacharidis, Hannes Werthner (2019). Defining and Measuring Fairness in Location Recommendations. ACM SIGSPATIAL International Workshop on Location-Based Recommendations, Geosocial Networks and Geoadvertising (LocalRec).

PDF Cite DOI URL

Dimitris Sacharidis, Kyriakos Mouratidis, Dimitrios Kleftogiannis (2019). A Common Approach for Consumer and Provider Fairness in Recommendations. ACM Conference on Recommender Systems (RecSys), Late-Breaking Results.

PDF Cite Rank A

Dimitris Sacharidis, Paras Mehta, Dimitrios Skoutas, Kostas Patroumpas, Agnès Voisard (2018). Selecting representative and diverse spatio-textual posts over sliding windows. International Conference on Scientific and Statistical Database Management (SSDBM).

PDF Cite DOI URL

Dimitris Sacharidis, Johann Gamper, Michael H. Böhlen (2018). Proceedings of the 30th International Conference on Scientific and Statistical Database Management, SSDBM 2018, Bozen-Bolzano, Italy, July 09-11, 2018. ACM.

Cite DOI URL

Dimitris Sacharidis, Johann Gamper, Michael H. Böhlen (2018). Proceedings of the 30th International Conference on Scientific and Statistical Database Management, SSDBM 2018, Bozen-Bolzano, Italy, July 09-11, 2018. ACM.

Cite DOI URL

Panagiotis Bouros, Matthias Renz, Dimitris Sacharidis (2018). Proceedings of the 2nd ACM SIGSPATIAL Workshop on Recommendations for Location-Based Services and Social Networks (LocalRec). ACM.

Cite URL

Carine Pierrette Mukamakuza, Dimitris Sacharidis, Hannes Werthner (2018). Mining User Behavior in Social Recommender Systems. International Conference on Web Intelligence, Mining and Semantics (WIMS).

PDF Cite DOI URL

Panagiotis Bouros, Matthias Renz, Dimitris Sacharidis (2018). LocalRec 2018 Workshop Report: The Second ACM SIGSPATIAL Workshop on Recommendations for Location-Based Services and Social Networks (LocalRec). ACM SIGSPATIAL Special.

Cite DOI URL

Dimitrios Skoutas, Dimitris Sacharidis, Kostas Patroumpas (2018). Efficient progressive and diversified top-k best region search. ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL).

PDF Cite DOI URL

Shuyao Qi, Dimitris Sacharidis, Panagiotis Bouros, Nikos Mamoulis (2017). Snapshot and continuous points-based trajectory search. GeoInformatica.

PDF Cite DOI URL

Panagiotis Bouros, Matthias Renz, Dimitris Sacharidis (2017). Proceedings of the 1st ACM SIGSPATIAL Workshop on Recommendations for Location-Based Services and Social Networks,(LocalRec). ACM.

Cite DOI URL

Panagiotis Bouros, Matthias Renz, Dimitris Sacharidis (2017). LocalRec 2017 Workshop Report: The First ACM SIGSPATIAL Workshop on Recommendations for Location-Based Services and Social Networks (LocalRec). ACM SIGSPATIAL Special.

Cite DOI URL

Qihang Gu, Dimitris Sacharidis, Michael Mathioudakis, Gang Wang (2017). Inferring Venue Visits from GPS Trajectories. ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL).

PDF Cite DOI URL

Dimitris Sacharidis (2017). Group Recommendations by Learning Rating Behavior. ACM Conference on User Modeling, Adaptation and Personalization (UMAP).

PDF Cite DOI URL

Dimitris Sacharidis, Panagiotis Bouros, Theodoros Chondrogiannis (2017). Finding The Most Preferred Path. ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL).

PDF Cite DOI URL

Paras Mehta, Dimitris Sacharidis, Dimitrios Skoutas, Agnès Voisard (2017). Finding Socio-Textual Associations Among Locations. International Conference on Extending Database Technology (EDBT).

PDF Cite DOI URL

Dimitris Sacharidis, Paras Mehta, Dimitrios Skoutas, Kostas Patroumpas, Agnès Voisard (2017). Continuous Summarization of Streaming Spatio-Textual Posts. ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL).

PDF Cite DOI URL

Paras Mehta, Manuel Kotlarski, Dimitrios Skoutas, Dimitris Sacharidis, Kostas Patroumpas, Agnès Voisard (2017). (μ)TOP: Spatio-Temporal Detection and Summarization of Locally Trending Topics in Microblog Posts. International Conference on Extending Database Technology (EDBT).

PDF Cite DOI URL

Paras Mehta, Dimitris Sacharidis, Dimitrios Skoutas, Agnès Voisard (2016). Keyword-based retrieval of frequent location sets in geotagged photo trails. ACM Conference on Web Science (WebSci).

PDF Cite DOI URL

Paras Mehta, Dimitris Sacharidis, Dimitrios Skoutas, Agnès Voisard (2016). Keyword-based retrieval of frequent location sets in geotagged photo trails. Proceedings of the 8th ACM Conference on Web Science, WebSci 2016, Hannover, Germany, May 22-25, 2016.

Cite DOI URL

Dimitrios Skoutas, Dimitris Sacharidis, Kostas Stamatoukos (2016). Identifying and Describing Streets of Interest. International Conference on Extending Database Technology (EDBT).

PDF Cite DOI URL

Angelos Papatriantafyllou, Dimitris Sacharidis (2016). High Performance Parallel Summed-Area Table Kernels for Multi-core and Many-core Systems. International Conference on Parallel and Distributed Computing (EuroPar).

PDF Cite DOI URL

Nikos Bikakis, Karim Benouaret, Dimitris Sacharidis (2016). Finding desirable objects under group categorical preferences. Knowledge and Information Systems (KAIS).

PDF Cite DOI URL

Paras Mehta, Dimitrios Skoutas, Dimitris Sacharidis, Agnès Voisard (2016). Coverage and diversity aware top-k query for spatio-temporal posts. ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL).

PDF Cite DOI URL

Dimitris Sacharidis, Antonios Deligiannakis (2015). Spatial Cohesion Queries. ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL).

PDF Cite DOI URL

Panagiotis Bouros, Neal Lathia, Matthias Renz, Francesco Ricci, Dimitris Sacharidis (2015). Proceedings of the Workshop on Location-Aware Recommendations, LocalRec 2015, co-located with the 9th ACM Conference on Recommender Systems (RecSys 2015), Vienna, Austria, September 19, 2015. CEUR-WS.org.

Cite URL

Panagiotis Bouros, Neal Lathia, Matthias Renz, Francesco Ricci, Dimitris Sacharidis (2015). Proceedings of the Workshop on Location-Aware Recommendations, LocalRec 2015, co-located with the 9th ACM Conference on Recommender Systems (RecSys 2015), Vienna, Austria, September 19, 2015. CEUR-WS.org.

Cite URL

Alexei Pozdnoukhov, Dimitris Sacharidis, Sen Xu (2015). Proceedings of the 8th ACM SIGSPATIAL International Workshop on Location-Based Social Networks, LBSN 2015, Bellevue, WA, USA, November 3-6, 2015. ACM.

Cite DOI URL

Alexei Pozdnoukhov, Dimitris Sacharidis, Sen Xu (2015). Proceedings of the 8th ACM SIGSPATIAL International Workshop on Location-Based Social Networks (LBSN). ACM.

PDF Cite DOI URL

Panagiotis Bouros, Neal Lathia, Matthias Renz, Francesco Ricci, Dimitris Sacharidis (2015). LocalRec'15: Workshop on Location-Aware Recommendations. ACM Conference on Recommender Systems (RecSys).

PDF Cite URL

Panagiotis Bouros, Neal Lathia, Matthias Renz, Francesco Ricci, Dimitris Sacharidis (2015). LocalRec'15: Workshop on Location-Aware Recommendations. Proceedings of the 9th ACM Conference on Recommender Systems, RecSys 2015, Vienna, Austria, September 16-20, 2015.

Cite URL

Dimitris Sacharidis, Amra Delic, Julia Neidhardt (2015). Learning the Role and Behavior of Users in Group Decision Making. International Workshop on Decision Making and Recommender Systems.

PDF Cite

Nikos Bikakis, Karim Benouaret, Dimitris Sacharidis (2015). Finding Desirable Objects under Group Categorical Preferences. Computing Research Repository (CoRR).

PDF Cite arXiv URL

Nikos Bikakis, Karim Benouaret, Dimitris Sacharidis (2015). Finding Desirable Objects under Group Categorical Preferences. CoRR.

Cite URL

Shuyao Qi, Panagiotis Bouros, Dimitris Sacharidis, Nikos Mamoulis (2015). Efficient Point-Based Trajectory Search. International Symposium on Spatial and Temporal Databases (SSTD).

PDF Cite DOI URL

George Tsatsanifos, Dimitris Sacharidis, Timos K. Sellis (2014). RIPPLE: A Scalable Framework for Distributed Processing of Rank Queries. International Conference on Extending Database Technology (EDBT).

PDF Cite DOI URL

Panagiotis Bouros, Dimitris Sacharidis, Nikos Bikakis (2014). Regionally influential users in location-aware social networks. ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL).

PDF Cite DOI URL

Nikos Bikakis, Karim Benouaret, Dimitris Sacharidis (2014). Reconciling Multiple Categorical Preferences with Double Pareto-Based Aggregation. International Conference on Database Systems for Advanced Applications (DASFAA).

PDF Cite DOI URL

Ilias Kanellos, Thanasis Vergoulis, Dimitris Sacharidis, Theodore Dalamagas, Artemis G. Hatzigeorgiou, Stelios Sartzetakis, Timos K. Sellis (2014). MR-microT: a MapReduce-based MicroRNA target prediction method. International Conference on Scientific and Statistical Database Management (SSDBM).

PDF Cite DOI URL

Dimitris Sacharidis, Timos Sellis (2014). Efficient Identification of the Highest Diversity Gain Object. International Workshop on Information Search, Integration and Personalization (ISIP).

PDF Cite DOI URL

Dimitris Sacharidis, Dimitrios Skoutas, Georgios Skoumas (2014). Continuous monitoring of nearest trajectories. ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL).

PDF Cite DOI URL

Nikos Bikakis, Dimitris Sacharidis, Timos K. Sellis (2014). A Study on External Memory Scan-Based Skyline Algorithms. International Conference on Database and Expert Systems Applications (DEXA).

PDF Cite DOI URL

Dimitris Sacharidis, Panagiotis Bouros (2013). Routing Directions: Keeping it Fast and Simple. ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL).

PDF Cite DOI URL

Dimitris Sacharidis, Panagiotis Bouros (2013). Routing Directions: Keeping it Fast and Simple. Computing Research Repository (CoRR).

PDF Cite arXiv URL

Dimitris Sacharidis, Panagiotis Bouros (2013). Routing Directions: Keeping it Fast and Simple. CoRR.

Cite URL

George Tsatsanifos, Dimitris Sacharidis, Timos K. Sellis (2013). Index-based query processing on distributed multidimensional data. GeoInformatica.

PDF Cite DOI URL

Karim Benouaret, Dimitris Sacharidis, Djamal Benslimane, Allel Hadjali (2012). Majority-Rule-Based Web Service Selection. International Conference on Web Information Systems Engineering (WISE).

PDF Cite DOI URL

Panagiotis Bouros, Dimitris Sacharidis, Theodore Dalamagas, Spiros Skiadopoulos, Timos K. Sellis (2012). Evaluating Path Queries over Frequently Updated Route Collections. IEEE Transactions on Knowledge and Data Engineering (TKDE).

PDF Cite DOI URL

Sören Auer, Theodore Dalamagas, Helen E. Parkinson, François Bancilhon, Giorgos Flouris, Dimitris Sacharidis, Peter Buneman, Dimitris Kotzinos, Yannis Stavrakas, Vassilis Christophides, George Papastefanatos, Kostas Thiveos (2012). Diachronic linked data: towards long-term preservation of structured interrelated information. International Workshop on Open Data (WOD).

PDF Cite DOI URL

Thanasis Vergoulis, Theodore Dalamagas, Dimitris Sacharidis, Timos K. Sellis (2012). Approximate regional sequence matching for genomic databases. VLDB Journal.

PDF Cite DOI URL

George Tsatsanifos, Dimitris Sacharidis, Timos K. Sellis (2011). On enhancing scalability for distributed RDF/S stores. International Conference on Extending Database Technology (EDBT).

PDF Cite DOI URL

George Tsatsanifos, Dimitris Sacharidis, Timos K. Sellis (2011). MIDAS: Multi-attribute Indexing for Distributed Architecture Systems. International Symposium on Spatial and Temporal Databases (SSTD).

PDF Cite DOI URL

Panagiotis Bouros, Dimitris Sacharidis, Theodore Dalamagas, Timos K. Sellis (2011). Dynamic Pickup and Delivery with Transfers. International Symposium on Spatial and Temporal Databases (SSTD).

PDF Cite DOI URL

Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Timos K. Sellis (2010). Ranking and Clustering Web Services Using Multicriteria Dominance Relationships. IEEE Transactions on Services Computing (TSC).

PDF Cite DOI URL

Dimitris Sacharidis, Anastasios Arvanitis, Timos K. Sellis (2010). Probabilistic contextual skylines. IEEE International Conference on Data Engineering (ICDE).

PDF Cite DOI URL

Dimitris Sacharidis, Kyriakos Mouratidis, Dimitris Papadias (2010). k-Anonymity in the Presence of External Databases. IEEE Transactions on Knowledge and Data Engineering (TKDE).

PDF Cite DOI URL

Dimitris Sacharidis, Stavros Papadopoulos, Dimitris Papadias (2009). Topologically Sorted Skylines for Partially Ordered Domains. IEEE International Conference on Data Engineering (ICDE).

PDF Cite DOI URL

Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Verena Kantere, Timos K. Sellis (2009). Top-emphk dominant web services under multi-criteria matching. International Conference on Extending Database Technology (EDBT).

PDF Cite DOI

Kyriakos Mouratidis, Dimitris Sacharidis, HweeHwa Pang (2009). Partially materialized digest scheme: an efficient verification method for outsourced databases. VLDB Journal.

PDF Cite DOI URL

Dimitris Sacharidis, Antonios Deligiannakis, Timos K. Sellis (2009). Hierarchically compressed wavelet synopses. VLDB Journal.

PDF Cite DOI URL

Panagiotis Bouros, Spiros Skiadopoulos, Theodore Dalamagas, Dimitris Sacharidis, Timos K. Sellis (2009). Evaluating Reachability Queries over Path Collections. International Conference on Scientific and Statistical Database Management (SSDBM).

PDF Cite DOI URL

Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Timos K. Sellis (2008). Serving the Sky: Discovering and Selecting Semantic Web Services through Dynamic Skyline Queries. IEEE International Conference on Semantic Computing (ICSC).

PDF Cite DOI URL

Dimitris Sacharidis, Kostas Patroumpas, Manolis Terrovitis, Verena Kantere, Michalis Potamias, Kyriakos Mouratidis, Timos K. Sellis (2008). On-line discovery of hot motion paths. International Conference on Extending Database Technology (EDBT).

PDF Cite DOI URL

Dimitrios Skoutas, Dimitris Sacharidis, Verena Kantere, Timos K. Sellis (2008). Efficient Semantic Web Service Discovery in Centralized and P2P Environments. International Semantic Web Conference (ISWC).

PDF Cite DOI URL

Dimitris Sacharidis, Panagiotis Bouros, Timos K. Sellis (2008). Caching Dynamic Skyline Queries. International Conference on Scientific and Statistical Database Management (SSDBM).

PDF Cite DOI URL

Panagiotis Karras, Dimitris Sacharidis, Nikos Mamoulis (2007). Exploiting duality in summarization with deterministic guarantees. ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD).

PDF Cite DOI URL

Stavros Papadopoulos, Dimitris Sacharidis, Kyriakos Mouratidis (2007). Continuous Medoid Queries over Moving Objects. International Symposium on Spatial and Temporal Databases (SSTD).

PDF Cite DOI URL

Graham Cormode, Minos N. Garofalakis, Dimitris Sacharidis (2006). Fast Approximate Wavelet Tracking on Streams. International Conference on Extending Database Technology (EDBT).

PDF Cite DOI URL

Dimitris Sacharidis (2006). Constructing Optimal Wavelet Synopses. International Conference on Extending Database Technology (EDBT) Workshops.

PDF Cite DOI URL

Michael Mathioudakis, Dimitris Sacharidis, Timos K. Sellis (2006). A Study on Workload-Aware Wavelet Synopses for Point and Range-Sum Queries. ACM International Workshop on Data Warehousing and OLAP (DOLAP).

PDF Cite DOI URL

Mehrdad Jahangiri, Dimitris Sacharidis, Cyrus Shahabi (2005). SHIFT-SPLIT: I/O Efficient Maintenance of Wavelet-Transformed Multidimensional Data. ACM SIGMOD International Conference on Management of Data (SIGMOD).

PDF Cite DOI URL

Cyrus Shahabi, Mehrdad Jahangiri, Dimitris Sacharidis (2005). Hybrid Query and Data Ordering for Fast and Progressive Range-Aggregate Query Answering. International Journal of Data Warehousing and Mining (IJDWM).

PDF Cite DOI