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SCIENTIFIC PUBLICATIONS
(offprints and e-versions available on request)
PAPERS IN CONFERENCE PROCEEDINGS
[C53] Vaios Stergiopoulos, Michael Vassilakopoulos, Eleni Tousidou, Antonio Corral: Hyper-parameters Tuning of Artificial Neural Networks: An Application in the Field of Recommender Systems. ADBIS (Short Papers) 2022: 266-276
[C52] Polychronis Velentzas, Michael Vassilakopoulos, Antonio Corral: GPU-Based Algorithms for Processing the k Nearest-Neighbor Query on Disk-Resident Data. MEDI 2021: 264-278
[C51] Francisco Garcia-Garcia, Antonio Corral, Luis Iribarne, Michael Vassilakopoulos: Enhancing Sedona (formerly GeoSpark) with Efficient k Nearest Neighbor Join Processing. MEDI 2021: 305-319
[C50] Polychronis Velentzas, Michael Vassilakopoulos, Antonio Corral: In-memory k Nearest Neighbor GPU-based Query Processing. GISTAM 2020: 310-317
[C49] Polychronis Velentzas, Michael Vassilakopoulos, Antonio Corral: A Partitioning GPU-based Algorithm for Processing the k Nearest-Neighbor Query. MEDES 2020: 2-9
[C48] Francisco Garcia-Garcia, Antonio Corral, Luis Iribarne, Michael Vassilakopoulos: MRSLICE: Efficient RkNN Query Processing in SpatialHadoop. MEDI 2019: 235-250
[C47] Panagiotis Moutafis, Francisco Garcia-Garcia, George Mavrommatis, Michael Vassilakopoulos, Antonio Corral, Luis Iribarne: MapReduce algorithms for the K group nearest-neighbor query. SAC 2019: 448-455
[C46] Anderson Chaves Carniel, George Roumelis, Ricardo Rodrigues Ciferri, Michael Vassilakopoulos, Antonio Corral, Cristina Dutra de Aguiar Ciferri: An Efficient Flash-aware Spatial Index for Points. GEOINFO 2018: 68-79
[C45] Francisco Garcia-Garcia, Antonio Corral, Luis Iribarne, Michael Vassilakopoulos: Voronoi-Diagram Based Partitioning for Distance Join Query Processing in SpatialHadoop. MEDI 2018: 251-267
[C44] George Roumelis, Michael Vassilakopoulos, Antonio Corral, Athanasios Fevgas, Yannis Manolopoulos: Spatial Batch-Queries Processing Using xBR ^+ -trees in Solid-State Drives. MEDI 2018: 301-317
[C43] George Mavrommatis, Panagiotis Moutafis, Michael Vassilakopoulos, Francisco Garcia-Garcia, Antonio Corral: SliceNBound: Solving Closest Pairs and Distance Join Queries in Apache Spark. ADBIS 2017: 199-213
[C42] Francisco Garcia-Garcia, Antonio Corral, Luis Iribarne, George Mavrommatis, Michael Vassilakopoulos: A Comparison of Distributed Spatial Data Management Systems for Processing Distance Join Queries. ADBIS 2017: 214-228
[C41] Nikolaos Athanasiou, Michael Vassilakopoulos, Antonio Corral, Yannis Manolopoulos: Use-based Optimization of Spatial Access Methods. MEDES 2017: 65-72
[C40] George Roumelis, Michael Vassilakopoulos, Antonio Corral, Yannis Manolopoulos: Bulk Insertions into xBR ^+ -trees. MEDI 2017: 185-199
[C39] Francisco Garcia-Garcia, Antonio Corral, Luis Iribarne, Michael Vassilakopoulos: RkNN Query Processing in Distributed Spatial Infrastructures: A Performance Study. MEDI 2017: 200-207
[C38] Francisco Garcia-Garcia, Antonio Corral, Luis Iribarne, Michael Vassilakopoulos, Yannis Manolopoulos: Enhancing SpatialHadoop with Closest Pair Queries. ADBIS 2016: 212-225
[C37] Nikolaos Mallios, Michael Vassilakopoulos: LearneA - Design and Functionalities of a Hybrid Personalized Learning Electronic Assistant. ICEIS (2) 2016: 339-344
[C36] George Roumelis, Michael Vassilakopoulos, Antonio Corral, Yannis Manolopoulos: Bulk-Loading xBR ^+ -trees. MEDI 2016: 57-71
[C35] George Roumelis, Michael Vassilakopoulos, Thanasis Loukopoulos, Antonio Corral, Yannis Manolopoulos: The xBR ^+ -tree: An Efficient Access Method for Points. DEXA (1) 2015: 43-58
[C34] George Roumelis, Michael Vassilakopoulos, Antonio Corral, Yannis Manolopoulos: Plane-Sweep Algorithms for the K Group Nearest-Neighbor Query. GISTAM 2015: 83-93
[C33] Nikolaos Ch. Kasmeridis, Michael Vassilakopoulos: A diet-guide mobile application for diabetes mellitus management. Panhellenic Conference on Informatics 2015: 377-381
[C32] Panos Papadopoulos, Thanasis Loukopoulos, Ioannis Anagnostopoulos, Nikolaos Tziritas, Michael Vassilakopoulos: RAC: a remote application calling framework for coordination of mobile apps. Panhellenic Conference on Informatics 2015: 394-399
[C31] George Roumelis, Thanasis Loukopoulos, Michael Vassilakopoulos: Database Design of a Geo-environmental Information System . ICEIS (2) 2014: 375-382
[C30] George Roumelis, Michael Vassilakopoulos, Antonio Corral, Yannis Manolopoulos: A New Plane-Sweep Algorithm for the K-Closest-Pairs Query. SOFSEM 2014: 478-490
[C29] Nikitas Karanikolas, Michael Vassilakopoulos, Nektarios Giannoulis: A software tool for building a statistical prefix processor. BCI 2012: 100-105
[C28] George Roumelis, Michael Vassilakopoulos, Antonio Corral: The Deletion Operation in xBR-Trees. Panhellenic Conference on Informatics 2012: 138-143
[C27] George Roumelis, Michael Vassilakopoulos, Antonio Corral: Performance Comparison of xBR-trees and R*-trees for Single Dataset Spatial Queries. ADBIS 2011: 228-242
[C26] Nikitas N. Karanikolas, Michael Vassilakopoulos: Assessment of language skills weaknesses and their confrontation through personalized e-lessons. CompSysTech 2011: 478-484
[C25] George Roumelis, Michael Vassilakopoulos, Antonio Corral: Nearest Neighbor Algorithms Using xBR-Trees. Panhellenic Conference on Informatics 2011: 51-55
[C24] Michael Vassilakopoulos, Antonio Corral, Nikitas N. Karanikolas: Join-Queries between Two Spatial Datasets Indexed by a Single R*-Tree. SOFSEM 2011: 533-544
[C23] Ioannis Michelakos, Nikolaos Mallios, Elpiniki I. Papageorgiou, Michael Vassilakopoulos: Ant Colony Optimization and Data Mining: Techniques and Trends. 3PGCIC 2010: 284-289
[C22] Ioannis Michelakos, Elpiniki I. Papageorgiou, Michael Vassilakopoulos: A Hybrid Classification Algorithm Evaluated on Medical Data. WETICE 2010: 98-103
[C21] Ioannis Michelakos, Elpiniki I. Papageorgiou, Michael Vassilakopoulos: A Study of cAnt-Miner2 Parameters Using Medical Data Sets. WETICE 2010: 119-121
[C20] Nikitas N. Karanikolas, Michael Vassilakopoulos: Conceptual Universal Database Language: Moving Up the Database Design Levels. ADBIS 2009: 330-346
[C19] Antonio Corral, Manuel Torres, Michael Vassilakopoulos, Yannis Manolopoulos: Predictive Join Processing between Regions and Moving Objects. ADBIS 2008: 46-61
[C18] Katerina Raptopoulou, Michael Vassilakopoulos, Yannis Manolopoulos: Efficient processing of past-future spatiotemporal queries. SAC 2006: 68-72
[C17] Antonio Corral, Alejandro D'Ermiliis, Yannis Manolopoulos, Michael Vassilakopoulos: VA-Files vs. R*-Trees in Distance Join Queries. ADBIS 2005: 153-166
[C16] Katerina Raptopoulou, Michael Vassilakopoulos, Yannis Manolopoulos: Towards Quadtree-Based Moving Objects Databases. ADBIS 2004: 230-245
[C15] Antonio Corral, Yannis Manolopoulos, Yannis Theodoridis, Michael Vassilakopoulos: Distance Join Queries of Multiple Inputs in Spatial Databases. ADBIS 2003: 323-338
[C14] Adriano Di Pasquale, Luca Forlizzi, Christian S. Jensen, Yannis Manolopoulos, Enrico Nardelli, Dieter Pfoser, Guido Proietti, Simonas Saltenis, Yannis Theodoridis, Theodoros Tzouramanis, Michael Vassilakopoulos: Access Methods and Query Processing Techniques. Spatio-Temporal Databases: The CHOROCHRONOS Approach 2003: 203-261
[C13] Antonio Corral, Joaquin Canadas, Michael Vassilakopoulos: Approximate Algorithms for Distance-Based Queries in High-Dimensional Data Spaces Using R-Trees. ADBIS 2002: 163-176
[C12] Apostolos Vontas, Philippos Koutsakas, Christina Athanasopoulou, Adamantios Koumpis, Panos Hatzaras, Yannis Manolopoulos, Michael Vassilakopoulos: Integrating Mobile Agent Infrastructures in Operational ERP Systems. ICEIS 2002: 1107-1110
[C11] Antonio Corral, Michael Vassilakopoulos, Yannis Manolopoulos: The Impact of Buffering on Closest Pairs Queries Using R-Trees. ADBIS 2001: 41-54
[C10] Theodoros Tzouramanis, Michael Vassilakopoulos, Yannis Manolopoulos: Time split linear quadtree for indexing image databases. ICIP (2) 2001: 733-736
[C9] Antonio Corral, Joaquin Canadas, Michael Vassilakopoulos: Processing Distance-Based Queries in Multidimensional Data Spaces Using R-trees. Panhellenic Conference on Informatics 2001: 1-18
[C8] Theodoros Tzouramanis, Michael Vassilakopoulos, Yannis Manolopoulos: Multiversion Linear Quadtree for Spatio-Temporal Data. ADBIS-DASFAA 2000: 279-292
[C7] Antonio Corral, Yannis Manolopoulos, Yannis Theodoridis, Michael Vassilakopoulos: Closest Pair Queries in Spatial Databases. SIGMOD Conference 2000: 189-200
[C6] Theodoros Tzouramanis, Michael Vassilakopoulos, Yannis Manolopoulos: Processing of Spatio-Temporal Queries in Image Databases. ADBIS 1999: 85-97
[C5] Antonio Corral, Michael Vassilakopoulos: Esquemas de Indexacion Espacio-Temporales para Datos Microclimaticos. JISBD 1999: 61-62
[C4] Antonio Corral, Michael Vassilakopoulos, Yannis Manolopoulos: Algorithms for Joining R-Trees and Linear Region Quadtrees. SSD 1999: 251-269
[C3] Theodoros Tzouramanis, Michael Vassilakopoulos, Yannis Manolopoulos: Overlapping Linear Quadtrees: A Spatio-Temporal Access Method. ACM-GIS 1998: 1-7
[C2] Yannis Manolopoulos, Enrico Nardelli, Guido Proietti, Michael Vassilakopoulos: On the Generation of Aggregated Random Spatial Regions. CIKM 1995: 318-325
[C1] Michael Vassilakopoulos, Yannis Manolopoulos: Analytical Results on the Quadtree Storage-Requirements. CAIP 1993: 41-48
PAPERS IN
SCIENTIFIC JOURNALS
[J35] Anderson Chaves Carniel, George Roumelis, Ricardo Rodrigues Ciferri, Michael Vassilakopoulos, Antonio Corral, Cristina Dutra de Aguiar Ciferri: Porting disk-based spatial index structures to flash-based solid state drives. GeoInformatica 26(1): 253-298 (2022)
[J34] Panagiotis Moutafis, Francisco Garcia-Garcia, George Mavrommatis, Michael Vassilakopoulos, Antonio Corral, Luis Iribarne: Algorithms for processing the group K nearest-neighbor query on distributed frameworks. Distributed Parallel Databases 39(3): 733-784 (2021)
[J33] Panagiotis Moutafis, George Mavrommatis, Michael Vassilakopoulos, Antonio Corral: Efficient Group K Nearest-Neighbor Spatial Query Processing in Apache Spark. ISPRS Int. J. Geo Inf. 10(11): 763 (2021)
[J32] Polychronis Velentzas, Michael Vassilakopoulos, Antonio Corral: GPU-aided edge computing for processing the k nearest-neighbor query on SSD-resident data. Internet Things 15: 100428
[J31] Polychronis Velentzas, Antonio Corral, Michael Vassilakopoulos: Big Spatial and Spatio-Temporal Data Analytics Systems. Trans. Large Scale Data Knowl. Centered Syst. 47: 155-180 (2021)
[J30] George Roumelis, Polychronis Velentzas, Michael Vassilakopoulos, Antonio Corral, Athanasios Fevgas, Yannis Manolopoulos: Parallel processing of spatial batch-queries using xBR+-trees in solid-state drives. Clust. Comput. 23(3): 1555-1575 (2020)
[J29] Francisco Garcia-Garcia, Antonio Corral, Luis Iribarne, Michael Vassilakopoulos: Improving Distance-Join Query processing with Voronoi-Diagram based partitioning in SpatialHadoop. Future Gener. Comput. Syst. 111: 723-740 (2020)
[J28] Francisco Garcia-Garcia, Antonio Corral, Luis Iribarne, Michael Vassilakopoulos, Yannis Manolopoulos: Efficient distance join query processing in distributed spatial data management systems. Inf. Sci. 512: 985-1008 (2020)
[J27] George Roumelis, Athanasios Fevgas, Michael Vassilakopoulos, Antonio Corral, Panayiotis Bozanis, Yannis Manolopoulos: Bulk-loading and bulk-insertion algorithms for xBR+-trees in Solid State Drives. Computing 101(10): 1539-1563 (2019)
[J26] Panagiotis Moutafis, George Mavrommatis, Michael Vassilakopoulos, Spyros Sioutas: Efficient processing of all-k-nearest-neighbor queries in the MapReduce programming framework. Data Knowl. Eng. 121: 42-70 (2019)
[J25] Anderson Chaves Carniel, George Roumelis, Ricardo Rodrigues Ciferri, Michael Vassilakopoulos, Antonio Corral, Cristina Dutra de Aguiar Ciferri: Indexing Points on Flash-based Solid State Drives using the xBR+-tree. J. Inf. Data Manag. 10(1): 35-48 (2019)
[J24] George Roumelis, Michael Vassilakopoulos, Antonio Corral, Yannis Manolopoulos: An efficient algorithm for bulk-loading xBR+-trees. Comput. Stand. Interfaces 57: 83-100 (2018)
[J23] Francisco Garcia-Garcia, Antonio Corral, Luis Iribarne, Michael Vassilakopoulos, Yannis Manolopoulos: Efficient large-scale distance-based join queries in spatialhadoop. GeoInformatica 22(2): 171-209 (2018)
[J22] George Roumelis, Michael Vassilakopoulos, Antonio Corral, Yannis Manolopoulos: Efficient query processing on large spatial databases: A performance study. J. Syst. Softw. 132: 165-185 (2017)
[J21] George Roumelis, Antonio Corral, Michael Vassilakopoulos, Yannis Manolopoulos: New plane-sweep algorithms for distance-based join queries in spatial databases. GeoInformatica 20(4): 571-628 (2016)
[J20] Nikitas N. Karanikolas, Michael Vassilakopoulos: Comparison of Post-Relational and Object-Relational modelling for real-world database applications. J. Syst. Inf. Technol. 16(4): 313-340 (2014)
[J19] Antonio Corral, Yannis Manolopoulos, Yannis Theodoridis, Michael Vassilakopoulos: Cost models for distance joins queries using R-trees. Data Knowl. Eng. 57(1): 1-36 (2006)
[J18] Katerina Raptopoulou, Michael Vassilakopoulos, Yannis Manolopoulos: On past-time indexing of moving objects. J. Syst. Softw. 79(8): 1079-1091 (2006)
[J17] Antonio Corral, Michael Vassilakopoulos: On Approximate Algorithms for Distance-Based Queries using R-trees. Comput. J. 48(2): 220-238 (2005)
[J16] Athanasios D. Styliadis, Michael Vassilakopoulos: A spatio-temporal geometry-based model for digital documentation of historical living systems. Inf. Manag. 42(2): 349-359 (2005)
[J15] Antonio Corral, Yannis Manolopoulos, Yannis Theodoridis, Michael Vassilakopoulos: Algorithms for processing K-closest-pair queries in spatial databases. Data Knowl. Eng. 49(1): 67-104
[J14] Theodoros Tzouramanis, Michael Vassilakopoulos, Yannis Manolopoulos: Benchmarking access methods for time-evolving regional data. Data Knowl. Eng. 49(3): 243-286 (2004)
[J13] Antonio Corral, Yannis Manolopoulos, Yannis Theodoridis, Michael Vassilakopoulos: Multi-Way Distance Join Queries in Spatial Databases. GeoInformatica 8(4): 373-402 (2004)
[J12] Theodoros Tzouramanis, Michael Vassilakopoulos, Yannis Manolopoulos: Generating Dynamic Raster Data. IEEE Data Eng. Bull. 26(2): 33-39 (2003)
[J11] Alexandros Nanopoulos, Michael Vassilakopoulos, Yannis Manolopoulos: Performance Evaluation of Lazy Deletion Methods in R-trees. GeoInformatica 7(4): 337-354 (2003)
[J10] Theodoros Tzouramanis, Michael Vassilakopoulos, Yannis Manolopoulos: On the Generation of Time-Evolving Regional Data. GeoInformatica 6(3): 207-231 (2002)
[J9] Theodoros Tzouramanis, Michael Vassilakopoulos, Yannis Manolopoulos: Overlapping Linear Quadtrees and Spatio-Temporal Query Processing. Comput. J. 43(4): 325-343 (2000)
[J8] Eleni Tousidou, Michael Vassilakopoulos, Yannis Manolopoulos: Performance Evaluation of Parallel S-Trees. J. Database Manag. 11(3): 28-34 (2000)
[J7] Michael Vassilakopoulos, Yannis Manolopoulos: On Sampling Regional Data. Data Knowl. Eng. 22(3): 309-318 (1997)
[J6] Yannis Manolopoulos, Enrico Nardelli, Guido Proietti, Michael Vassilakopoulos: On the creation of quadtrees by using a branching process. Image Vis. Comput. 14(2): 159-164 (1996)
[J5] Michael Vassilakopoulos, Yannis Manolopoulos: Dynamic Inverted Quadtree: A Structure for Pictorial Databases. Inf. Syst. 20(6): 483-500 (1995)
[J4] Michael Vassilakopoulos, Yannis Manolopoulos, Brigitte Kroll: Efficiency Analysis of Overlapped Quadtrees. Nord. J. Comput. 2(1): 70-84 (1995)
[J3] Michael Vassilakopoulos, Yannis Manolopoulos: A random model for analyzing region quadtrees. Pattern Recognit. Lett. 16(11): 1137-1145 (1995)
[J2] Michael Vassilakopoulos, Yannis Manolopoulos: Analytical Comparison of Two Spatial Data Structures. Inf. Syst. 19(7): 569-582 (1994)
[J1] Michael Vassilakopoulos, Yannis Manolopoulos, K. Economou: Overlapping quadtrees for the representation of similar images. Image Vis. Comput. 11(5): 257-262 (1993)
CONTRIBUTIONS IN
BOOKS, POST-PROCEEDINGS, BULLETINS, ENCYCLOPEDIAS
[E1] M. Vassilakopoulos & A. Corral, Spatio-Temporal Indexing
Techniques, Encyclopedia of Database Technologies and Applications,
Idea Group Publishing (2005), ISBN 1-59140-560-2, 652-657[E2] A. Corral & M. Vassilakopoulos, Query Processing in Spatial Databases, Encyclopedia of Database Technologies and Applications, Idea Group Publishing (2005), ISBN 1-59140-560-2, 511-516
[E3] M. Vassilakopoulos, A.Corral, B.Rachev, I.Valova, and M. Stoeva, Image Database Indexing Techniques, Handbook of Research on Geoinformatics, ISBN 978-1-59140-995-3, Information Science Reference (2009), 20-27
[E4] M. Vassilakopoulos, Spatial Network Databases, Handbook of Research on Innovations in Database Technologies and Applications: Current and Future Trends, Vol II, ISBN 978-1-60566-242-8, Information Science Reference (2009), 307-315
[E5] M. Vassilakopoulos & A. Corral, Spatio-Temporal Indexing Techniques, Handbook of Research on Innovations in Database Technologies and Applications: Current and Future Trends, Vol II, ISBN 978-1-60566-242-8, Information Science Reference (2009), 260-268
[E6] A. Corral & M. Vassilakopoulos, Query Processing in Spatial Databases, Handbook of Research on Innovations in Database Technologies and Applications: Current and Future Trends, Vol II, ISBN 978-1-60566-242-8, Information Science Reference (2009), 269-278
[E7] A. Corral & M. Vassilakopoulos, Closest-Pair Query, Encyclopedia of Database Systems, ISBN 978-0-387-35544-3, Springer Science+Business Media, LLC (2009), 368-373
[E8] M. Vassilakopoulos & T. Tzouramanis, Quadtrees (and family), Encyclopedia of Database Systems, ISBN 978-0-387-35544-3, Springer Science+Business Media, LLC (2009), 2219-2225
[B1] Μ. Βασιλακόπουλος και Ι. Μανωλόπουλος, Δομές φυσικού επιπέδου χωροταξικών βάσεων δεδομένων, κεφάλαιο στο βιβλίο Ειδικά Θέματα Βάσεων Δεδομένων, Ελληνική Εταιρία Επιστημόνων Η/Υ και Πληροφορικής (ΕΠΥ), Αθήνα (1993), 23-48
[B2] M. Vassilakopoulos and Y. Manolopoulos, External Balanced Regular (x-BR) Trees: New Structures for Very Large Spatial Databases, section in the Book Advances in Informatics, World Scientific Publishing Co, Singapore (2000), 324-333 (αναδημοσίευση C11 κατόπιν κρίσης)
[B3] Ερευνητική ομάδα προγράμματος ChoroChronos, Access Methods and Query Processing Techniques, κεφάλαιο στο βιβλίο Spatiotemporal Databases: the ChoroChronos Approach, LNCS 2520, Springer Verlag (2003)
[B4] Corral A., Canadas J. and Vassilakopoulos M., Processing Distance-Based Queries in Multidimensional Data Spaces using R-trees, Post-proceedings of the 8th Panhellenic Conference in Informatics, LNCS 2563, Springer Verlag (2003) 1-18
[B5] Tzouramanis, M. Vassilakopoulos and Y. Manolopoulos, Generating Dynamic Raster Data, IEEE Data Engineering Bulletin, Vol 26, No 2, (June 2003) 33-39 (invited contribution)
[B6] A. Corral & M. Vassilakopoulos, Approximate Computation of Distance based Queries, chapter in the book Spatial Databases: Technologies, Techniques and Trends, Idea Group Publishing (2005), 130-154
[B7] Michelakos I., Mallios N., Papageorgiou E & Vassilakopoulos M., Ant Colony Optimization and Data Mining, Chapter 2 in the book Next Generation Data Technologies for Collective Computational Intelligence, Series: Studies in Computational Intelligence, Vol. 352, Bessis, Nik; Xhafa, Fatos (Eds.), ISBN 978-3-642-20343-5, Springer 2011, pp 31-60.
[B8] Κώστογλου Β., Βασιλακόπουλος Μ, και Ζαφειρόπουλος Κ, Η απορρόφηση των αποφοίτων του Αλεξάνδρειου ΤΕΙ Θεσσαλονίκης: Συνολική Μελέτη. Έκδοση Γρ. Διασύνδεσης ΑΤΕΙΘ (2007), ISBN: 978-960-287-079-2.
CO-EDITOR OF BOOKS
"Spatial
Databases: Technologies, Techniques and Trends", book edited
by Y. Manolopoulos, A. Papadopoulos and M.
Vassilakopoulos, Idea
Group Publishing, ISBN
1-59140-387-1
(hard cover) and 1-59140-388-X (soft cover)