Δημοσιεύσεις

Efficient Execution of User-Defined Functions in SQL Queries. Yannis Foufoulas, Alkis Simitsis. PVLDB, 2023 

A Tool for Visual Exploration and Analysis of Solar Photovoltaic Module Data. Vassilis Stamatopoulos, Stavros Maroulis, Konstantinos Kozanis, Ioannis Psarros, George Papastefanatos, Giorgos Giannopoulos, Manolis Terrovitis. EDBT/ICDT Workshops 2023, 2023 

The History, Present, and Future of ETL Technology. Alkis Simitsis, Spiros Skiadopoulos, Panos Vassiliadis. DOLAP, 2023 

Toulouse: Learning Join Order Optimization Policies for Rule-based Data Engines. Antonios Karvelas, Yannis Foufoulas, Alkis Simitsis, Yannis Ioannidis. DataPlat, 2023 

User-Defined Functions in Modern Data Engines. Yannis Foufoulas, Alkis Simitsis. IEEE ICDE 2023, 2023 

Machine Learning Platform for Extreme Scale Computing on Compressed IoT Data. Seshu Tirupathi et al. IEEE International Conference on Big Data (Big Data 22), 2022 

YeSQL: You extend SQL with Rich and Highly Performant User-Defined Functions in Relational Databases. Yannis Foufoulas, Alkis Simitsis, Lefteris Stamatogiannakis, Yannis Ioannidis. PVLDB, 2022

YeSQL: Rich User-Defined Functions without the Overhead. Yannis Foufoulas, Alkis Simitsis, Yannis Ioannidis. PVLDB, 2022

SheerMP: Optimized Streaming Analytics-as-a-Service over Multi-site and Multi-platform Settings. George Stamatakis, Antonis Kontaxakis, Alkis Simitsis, Nikos Giatrakos, Antonios Deligiannakis. EDBT, 2022 

Database Optimizers in the Era of Learning. Dimitris Tsesmelis, Alkis Simitsis. IEEE ICDE, 2022 

A Cloud-Native NGS Data Processing and Annotation Platform. Giannis Mouchakis, Babis Kostopoulos, Stasinos Konstantopoulos, Ilias Kanellos, Anargiros Tzerefos, Thanasis Vergoulis, Thodoris Dalamagas. Poly/DMAH@VLDB 2021: 121-132, 2021

A Machine Learning Methodology for Next Day Wildfire Prediction. Stella Girtsou, Alexis Apostolakis, Giorgos Giannopoulos, Charalampos Kontoes. Published in: 2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021 

Extreme-Scale Interactive Cross-Platform Streaming Analytics - The INFORE Approach. Antonios Deligiannakis, Nikos Giatrakos, Yannis Kotidis, Vasilis Samoladas, Alkis Simitsis. SEA-Data@VLDB, 2021 

Databases and Information Systems in the AI Era: Contributions from ADBIS, TPDL and EDA 2020 Workshops and Doctoral Consortium. 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, Franc. ADBIS/TPDL/EDA Workshops 2020: 3-20, 2020 

Big Data Visualization and Analytics: Future Research Challenges and Emerging Applications. G. L. Andrienko, N.V. Andrienko, S. Mark Drucker, J-D Fekete, D. Fisher, S. Idreos, T. Kraska, G. Li, K-L Ma, J.D. Mackinlay, A. Oulasvirta, T. Schreck, H. Schumann, M. Stonebraker, D. Auber, N. Bikakis, P. K. Chrysanthis, G. Papastefanatos, M.A. Sha. In 3rd International Workshop on Big Data Visual Exploration and Analytics (BigVis2020) co-located with EDBT/ICDT 2020 Joint Conference Copenhagen, Denmark, March 30, 2020, 2020 

INforE: Interactive Cross-platform Analytics for Everyone. Nikos Giatrakos, David Arnu, Theodoros Bitsakis, Antonios Deligiannakis, Minos N. Garofalakis, Ralf Klinkenberg, Aris Konidaris, Antonis Kontaxakis, Yannis Kotidis, Vasilis Samoladas, Alkis Simitsis, George Stamatakis, Fabian Temme, et al.. ACM CIKM, 2020 

Introducing EBRAINS: European infrastructure for brain research . Wouter Klijn, Sandra Diaz, Sebastian Spreizer, Thomas Lippert, Spiros Athanasiou, Yannis Ioannidis, Abigail Morrison, Evdokia Mailli, Katrin Amunts, Jan G. Bjaalie. Organization for Computational Neuroscienses Conference (CNS 2020), 2020 

Near-Neighbor Preserving Dimension Reduction for Doubling Subsets of l1. . I.Z. Emiris, Vasilis Margonis, Ioannis Psarros. APPROX-RANDOM 2019: 47:1-47:13, 2019 

Big POI data integration with Linked Data technologies. Spiros Athanasiou, Giorgos Giannopoulos, Damien Graux, Nikos Karagiannakis, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Kostas Patroumpas, Mohamed Ahmed Sherif, Dimitrios Skoutas . 22nd International Conference on Extending Database Technology (EDBT) 2019: 477-488, 2019 

SLIPO: Large-Scale Data Integration for Points of Interest. Spiros Athanasiou, Michail Alexakis, Giorgos Giannopoulos, Nikos Karagiannakis, Yannis Kouvaras, Pantelis Mitropoulos, Kostas Patroumpas, Dimitrios Skoutas . 22nd International Conference on Extending Database Technology (EDBT) 2019: 574-577, 2019 

Query driven Entity Resolution in Data Lakes. Giorgos Alexiou, G. Papastefanatos. 13th International Workshop on Information Search, Integration, and Personalization, 9-10 May, 2019, Heraklion, 2019 

Products of euclidean metrics and applications to proximity questions among curves. I.Z. Emiris and I. Psarros. Annual Symp. on Computational Geometry (SoCG), pages 37:1–37:13, 2018 

RawVis: Visual Exploration over Raw Data. N. Bikakis, S. Maroulis, G. Papastefanatos, P. Vassiliadis. In 22nd European Conference on Advances in Databases and Information Systems (ADBIS 2018), September 2-5, Budapest, Hungary, 2018 

On-the-fly Mobility Event Detection over Aircraft Trajectories. Kostas Patroumpas, Nikos Pelekis, Yannis Theodoridis. 26th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2018), 2018 

Scalable Hybrid Similarity Join over Geolocated Time Series . Giorgos Chatzigeorgakidis, Kostas Patroumpas, Dimitrios Skoutas, Spiros Athanasiou, and Spiros Skiadopoulos. 26th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2018), 2018 

Efficient Progressive and Diversified Top-k Best Region Search. Dimitrios Skoutas, Dimitris Sacharidis, Kostas Patroumpas. 26th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2018), 2018 

Unsupervised Disaggregation of Low Granularity Resource Consumption Time Series. Pantelis Chronis, Giorgos Giannopoulos, Spiros Athanasiou, and Spiros Skiadopoulos. The 22nd Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2018), 2018 

Map-Based Visual Exploration of Geolocated Time Series . Giorgos Chatzigeorgakidis, Dimitrios Skoutas, Kostas Patroumpas, Spiros Athanasiou, and Spiros Skiadopoulos. BigVis EDBT/ICDT 2018, 2018 

Probabilistic k-Nearest Neighbor Monitoring of Moving Gaussians. Kostas Patroumpas, Christos Koutras. 29th International Conference on Scientific and Statistical Database Management (SSDBM 2017), 2017 

Indexing Geolocated Time Series Data. Georgios Chatzigeorgakidis, Dimitrios Skoutas, Kostas Patroumpas, Spiros Athanasiou, Spiros Skiadopoulos. 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2017), 2017 

graphVizdb: A Scalable Platform for Interactive Large Graph Visualization. N. Bikakis, J. Liagouris, M. Krommyda, G. Papastefanatos, T.Sellis. In 32nd IEEE International Conference on Data Engineering(ICDE 2016) - Demo, Helsinki, Finland, May 2016, 2016 

Open Issues and Challenges on Time Series Forecasting for Water Consumption. Pantelis Chronis, Giorgos Giannopoulos, Spiros Athanasiou. EDBT/ICDT Workshops 2016, 2016 

Enabling persistent identification of groups of duplicates in data aggregators. Giorgos Alexiou, Marios Meimaris, George Papastefanatos. 7th International Workshop on Data Engineering meets the Semantic Web (hosted by 32nd International Conference on Data Engineering), May 16-20, 2016, Helsinki, Finland , 2016 

Scaling Entity Resolution to Large, Heterogeneous Data with Enhanced Meta-blocking. George Papadakis, George Papastefanatos, Themis Palpanas, Manolis Koubarakis. 19th International Conference on Extending Database Technology, EDBT 2016, Bordeaux, France, March 15-16, 2016 

Exploration and Visualization in the Web of Big Linked Data: A Survey of the State of the Art. Nikos Bikakis and Timos Sellis. 6th International Workshop on Linked Web Data Management (LWDM), 2016 

Parallel meta-blocking: Realizing scalable entity resolution over large, heterogeneous data. Vasilis Efthymiou, George Papadakis, George Papastefanatos, Kostas Stefanidis, Themis Palpanas. IEEE International Conference on Big Data (IEEE BigData 2015), Oct 29 - Nov 01, 2015 @ Santa Clara, CA, USA, 2015 

A MapReduce Based k-NN Joins Probabilistic Classifier. Georgios Chatzigeorgakidis, Sophia Karagiorgou, Spiros Athanasiou, and Spiros Skiadopoulos. 2105 IEEE International Conference on Big Data (IEEE BigData 2015), 2015 

Towards Open Big Geospatial Data for geodata.gov.gr. Angelos Tzotsos, Michail Alexakis and Spiros Athanasiou. FOSS4G-Europe 2015, 2015 

Online Analysis of Remote Sensing Data for Agricultural Applications. Athanasios Karmas, Konstantinos Karantzalos, Spiros Athanasiou. FOSS4G-Europe 2014, 2014 

DAIAD: from droplets of participation to streams of knowledge. Spiros Athanasiou, Thorsten Staake, Thomas Stiefmeier, Christian Sartorius, Jacob Tompkins, Efthymios Lytras. Intelligent Distribution for Efficient and Affordable Supplies, Water IDEAS 2014, 2014 

DAIAD: Open Water Monitoring. Spiros Athanasiou, Thorsten Staake, Thomas Stiefmeier, Christian Sartorius, Jacob Tompkins, Efthymios Lytras. 16th Conference on Water Distribution System Analysis, WDSA2014, 2014 

MR-microT: A MapReduce-based MicroRNA Target Prediction Method. Ilias Kanellos, Thanasis Vergoulis, Dimitris Sacharidis, Theodore Dalamagas, Artemis Hatzigeorgiou, Stelios Sartzetakis, Timos Sellis. SSDBM ’14, Article No. 47, 2014 

Challenges and Opportunities in the Evolving Data web. George Papastefanatos. 1st International Workshop on Modeling and Management of Big Data (MoBiD ), November 13, 2013, Hong Kong, 2013

Estimating Next Day’s Forest Fire Risk via a Complete Machine Learning Methodology. Alexis Apostolakis, Stella Girtsou, Giorgos Giannopoulos, Nikolaos S Bartsotas, Charalampos Kontoes. Remote Sensing 14, no. 5: 1222., 2022 

In-Situ Visual Exploration over Big Raw Data. Nikos Bikakis, Stavros Maroulis, George Papastefanatos, Panos Vassiliadis. In Inf. Syst. 95: 101616 , 2021 

Big Data Exploration, Visualization and Analytics. Nikos Bikakis, George Papastefanatos, Olga Papaemmanouil. Journal on Big Data Research, Vol. 18 (2019). Editorial in Special Issue, 2019 

Visual Exploration of Geolocated Time Series with Hybrid Indexing. Georgios Chatzigeorgakidis, Kostas Patroumpas, Dimitrios Skoutas, Spiros Athanasiou, Spiros Skiadopoulos. Big Data Research, Volume 15 (pp. 12-28), 2019 

Computational Methods and Optimizations for Containment and Complementarity in Web Data Cubes. M. Meimaris, G. Papastefanatos, P. Vassiliadis, I. Anagnostopoulos. Information Systems 75: 56-74 (2018)., 2018 

FML kNN: scalable machine learning on Big Data using k nearest neighbor joins. Giorgos Chatzigeorgakidis, Sophia Karagiorgou, Spiros Athanasiou, and Spiros Skiadopoulos. Journal of Big Data, Vol. 5, DOI: 10.1186/s40537-018-0115-x, 2018 

Parallel Meta-blocking for Scaling Entity Resolution over Big Heterogeneous Data. V. Efthymiou, G. Papadakis, G. Papastefanatos, K. Stefanidis, T. Palpanas. Information Systems 65: 137-157 (2017), 2017 

Boosting the efficiency of large-scale entity resolution with enhanced meta-blocking. G. Papadakis, G. Papastefanatos, T. Palpanas, M. Koubarakis.. Journal of Big Data research (6): 43-63 (2016), DOI: 10.1016/j.bdr.2016.08.002, 2016 

A Hierarchical Aggregation Framework for Efficient Multilevel Visual Exploration and Analysis. Nikos Bikakis, George Papastefanatos, Melina Skourla, Timos Sellis. Semantic Web Journal (SWJ) vol. Preprint, no. Preprint, pp. 1-41, 2016, 2016 

Schema-agnostic vs Schema-based Configurations for Blocking Methods on Homogeneous Data. George Papadakis, George Alexiou, George Papastefanatos, Georgia Koutrika. PVLDB 9(4): 312-323 (2015), 2015 

Supervised Metablocking. George Papadakis, George Papastefanatos, Georgia Koutrika. PVLDB 7(14): 1929-1940 (2014), 2014 

Boosting the Efficiency of Large-scale Entity Resolution with Enhanced Meta-blocking. George Papadakis, George Papastefanatos, Themis Palpanas. TR-IMIS-2015-1, 2015 

Efficient Identification of Implicit Facts in Incomplete OWL Knowledge Bases. John Liagouris and Manolis Terrovitis. Technical Report TR-IMIS-2014-1, 2014 

Scalable Indexing and Exploration of Big Time Series Data. Georgios Chatzigeorgakidis. PhD Thesis, 2020 

Managing, Querying and Analyzing Big Data on the Web. Marios Meimaris. University of Thessaly (supervisor prof. I. Anagnostopoulos), 2018 

Personalized, Semantic and Exploratory Data Analysis / Εξατομικευμένη, Σημασιολογική και Διερευνητική Ανάλυση Δεδομένων. Nikos Bikakis . National Technical University of Athens, Greece, 2016 

Cyber security and its impact on Connected Autonomous Vehicles safety: State-of-the-art, policy needs and challenges. Christos Katrakazas, Athanasios Theofilatos, George Papastefanatos, Jerome Härri, Costas Antoniou. Book Chapter in Volume “Policy Implications of Autonomous Vehicles”, Elsevier, Advances in Transport Policy and Planning, Volume 5, Pages 73-94, 2020