Timos K. Sellis

Xiaoying Wu, Dimitri Theodoratos, Wendy Hui Wang, Timos Sellis: Optimizing XML queries: Bitmapped materialized views vs. indexes. Inf. Syst. 38(6): 863-884 (2013)

Panagiotis Bouros, Dimitris Sacharidis, Theodore Dalamagas, Spiros Skiadopoulos, Timos K. Sellis: Evaluating Path Queries over Frequently Updated Route Collections. IEEE Trans. Knowl. Data Eng. 24(7): 1276-1290 (2012)

Xiaoying Wu, Stefanos Souldatos, Dimitri Theodoratos, Theodore Dalamagas, Yannis Vassiliou, Timos K. Sellis: Processing and Evaluating Partial Tree Pattern Queries on XML Data. IEEE Trans. Knowl. Data Eng. 24(12): 2244-2259 (2012)

Thanasis Vergoulis, Theodore Dalamagas, Dimitris Sacharidis, Timos K. Sellis: Approximate regional sequence matching for genomic databases. VLDB J. 21(6): 779-795 (2012)

Timos K. Sellis: Personalization in Web Search and Data Management. SEBD 2012: 3

Kostas Patroumpas, Marios Papamichalis, Timos K. Sellis: Probabilistic Range Monitoring of Streaming Uncertain Positions in GeoSocial Networks. SSDBM 2012: 20-37

Kostas Patroumpas, Kyriakos Toumbas, Timos K. Sellis: Multiplexing Trajectories of Moving Objects. SSDBM 2012: 595-600

Thanasis Vergoulis, Michail Alexakis, Theodore Dalamagas, Manolis Maragkakis, Artemis G. Hatzigeorgiou, Timos K. Sellis: TARCLOUD: A Cloud-Based Platform to Support miRNA Target Prediction. SSDBM 2012: 628-633

Kostas Patroumpas, Timos K. Sellis: Event Processing and Real-Time Monitoring over Streaming Traffic Data. W2GIS 2012: 116-133

Giorgos Giannopoulos, Ingmar Weber, Alejandro Jaimes, Timos K. Sellis: Diversifying User Comments on News Articles. WISE 2012: 100-113

Kostas Patroumpas, Timos K. Sellis: Maintaining consistent results of continuous queries under diverse window specifications. Inf. Syst. 36(1): 42-61 (2011)

Verena Kantere, Dimos Bousounis, Timos K. Sellis: GrouPeer: A System for Clustering PDMSs. PVLDB 4(12): 1371-1374 (2011)

Kostas Patroumpas, Timos K. Sellis: Subsuming Multiple Sliding Windows for Shared Stream Computation. ADBIS 2011: 56-69

Giorgos Giannopoulos, Ulf Brefeld, Theodore Dalamagas, Timos K. Sellis: Learning to rank user intent. CIKM 2011: 195-200

George Tsatsanifos, Dimitris Sacharidis, Timos K. Sellis: On enhancing scalability for distributed RDF/S stores. EDBT 2011: 141-152

Manolis Terrovitis, Panagiotis Bouros, Panos Vassiliadis, Timos K. Sellis, Nikos Mamoulis: Efficient answering of set containment queries for skewed item distributions. EDBT 2011: 225-236

Giorgos Giannopoulos, Theodore Dalamagas, Timos K. Sellis: Search Behavior-Driven Training for Result Re-Ranking. TPDL 2011: 316-328

Timos K. Sellis: Personalization in Web Search and Data Management. MEDI 2011: 1

Panagiotis Bouros, Dimitris Sacharidis, Theodore Dalamagas, Timos K. Sellis: Dynamic Pickup and Delivery with Transfers. SSTD 2011: 112-129

George Tsatsanifos, Dimitris Sacharidis, Timos K. Sellis: MIDAS: Multi-attribute Indexing for Distributed Architecture Systems. SSTD 2011: 168-185

Timos K. Sellis, Renée J. Miller, Anastasios Kementsietsidis, Yannis Velegrakis (Eds.): Proceedings of the ACM SIGMOD International Conference on Management of Data, SIGMOD 2011, Athens, Greece, June 12-16, 2011. ACM 2011, isbn 978-1-4503-0661-4

Panagiotis Alexiou, Thanasis Vergoulis, Martin Gleditzsch, George Prekas, Theodore Dalamagas, Molly Megraw, Ivo Grosse, Timos K. Sellis, Artemis G. Hatzigeorgiou: miRGen 2.0: a database of microRNA genomic information and regulation. Nucleic Acids Research 38(Database-Issue): 137-141 (2010)

Verena Kantere, Maher Manoubi, Iluju Kiringa, Timos K. Sellis, John Mylopoulos: Peer coordination through distributed triggers. PVLDB 3(2): 1561-1564 (2010)

Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Timos K. Sellis: Ranking and Clustering Web Services Using Multicriteria Dominance Relationships. IEEE T. Services Computing 3(3): 163-177 (2010)

Xiaoying Wu, Dimitri Theodoratos, Stefanos Souldatos, Theodore Dalamagas, Timos K. Sellis: Evaluation Techniques for Generalized Path Pattern Queries on XML Data. World Wide Web 13(4): 441-474 (2010)

Giorgos Giannopoulos, Nikos Bikakis, Theodore Dalamagas, Timos K. Sellis: GoNTogle: A Tool for Semantic Annotation and Search. ESWC (2) 2010: 376-380

Dimitris Sacharidis, Anastasios Arvanitis, Timos K. Sellis: Probabilistic contextual skylines. ICDE 2010: 273-284

Nikos Bikakis, Giorgos Giannopoulos, Theodore Dalamagas, Timos K. Sellis: Integrating Keywords and Semantics on Document Annotation and Search. OTM Conferences (2) 2010: 921-938

Kostas Patroumpas, Timos K. Sellis: Multi-granular Time-Based Sliding Windows over Data Streams. TIME 2010: 146-153

Manolis Maragkakis, Panagiotis Alexiou, Giorgos L. Papadopoulos, Martin Reczko, Theodore Dalamagas, Giorgos Giannopoulos, George I. Goumas, Evangelos Koukis, Kornilios Kourtis, Victor A. Simossis, Praveen Sethupathy, Thanasis Vergoulis, Nectarios Koziris, Timos K. Sellis, Panayotis Tsanakas, Artemis G. Hatzigeorgiou: Accurate microRNA target prediction correlates with protein repression levels. BMC Bioinformatics 10: 295 (2009)

Verena Kantere, Dimitrios Tsoumakos, Timos K. Sellis, Nick Roussopoulos: GrouPeer: Dynamic clustering of P2P databases. Inf. Syst. 34(1): 62-86 (2009)

Dimitrios Skoutas, Alkis Simitsis, Timos K. Sellis: Ontology-Driven Conceptual Design of ETL Processes Using Graph Transformations. J. Data Semantics 13: 120-146 (2009)

Manolis Maragkakis, Martin Reczko, Victor A. Simossis, Panagiotis Alexiou, Giorgos L. Papadopoulos, Theodore Dalamagas, Giorgos Giannopoulos, Georgios I. Goumas, Evangelos Koukis, Kornilios Kourtis, Thanasis Vergoulis, Nectarios Koziris, Timos K. Sellis, Panayotis Tsanakas, Artemis G. Hatzigeorgiou: DIANA-microT web server: elucidating microRNA functions through target prediction. Nucleic Acids Research 37(Web-Server-Issue): 273-276 (2009)

Verena Kantere, Spiros Skiadopoulos, Timos K. Sellis: Storing and Indexing Spatial Data in P2P Systems. IEEE Trans. Knowl. Data Eng. 21(2): 287-300 (2009)

Dimitris Sacharidis, Antonios Deligiannakis, Timos K. Sellis: Hierarchically compressed wavelet synopses. VLDB J. 18(1): 203-231 (2009)

Dimitri Theodoratos, Pawel Placek, Theodore Dalamagas, Stefanos Souldatos, Timos K. Sellis: Containment of partially specified tree-pattern queries in the presence of dimension graphs. VLDB J. 18(1): 233-254 (2009)

George Papastefanatos, Panos Vassiliadis, Alkis Simitsis, Timos K. Sellis, Yannis Vassiliou: Rule-Based Management of Schema Changes at ETL Sources. ADBIS (Workshops) 2009: 55-62

Kostas Patroumpas, Timos K. Sellis: Window Update Patterns in Stream Operators. ADBIS 2009: 118-132

Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Verena Kantere, Timos K. Sellis: Top-k dominant web services under multi-criteria matching. EDBT 2009: 898-909

Verena Kantere, Dimos Bousounis, Timos K. Sellis: A tool for mapping discovery over revealing schemas. EDBT 2009: 1124-1127

Kostas Patroumpas, Timos K. Sellis: Monitoring Orientation of Moving Objects around Focal Points. SSTD 2009: 228-246

Xiaoying Wu, Dimitri Theodoratos, Stefanos Souldatos, Theodore Dalamagas, Timos K. Sellis: Efficient Evaluation of Generalized Tree-Pattern Queries with Same-Path Constraints. SSDBM 2009: 361-379

Panagiotis Bouros, Spiros Skiadopoulos, Theodore Dalamagas, Dimitris Sacharidis, Timos K. Sellis: Evaluating Reachability Queries over Path Collections. SSDBM 2009: 398-416

Lefteris Sidirourgos, Giorgos Kokkinidis, Theodore Dalamagas, Vassilis Christophides, Timos K. Sellis: Indexing views to route queries in a PDMS. Distributed and Parallel Databases 23(1): 45-68 (2008)

Dimitrios Skoutas, Alkis Simitsis, Timos K. Sellis: Discovery and Selection of Services on the Semantic Web. ERCIM News 2008(72) (2008)

Verena Kantere, Dimitrios Tsoumakos, Timos K. Sellis: A framework for semantic grouping in P2P databases. Inf. Syst. 33(7-8): 611-636 (2008)

Theodore Dalamagas, Alexandra Meliou, Timos K. Sellis: Modeling and manipulating the structure of hierarchical schemas for the web. Inf. Sci. 178(4): 985-1010 (2008)

Nikos Karayannidis, Timos K. Sellis: Hierarchical clustering for OLAP: the CUBE File approach. VLDB J. 17(4): 621-655 (2008)

Timos K. Sellis, Dimitrios Skoutas, K. Staikos: Database interoperability through Web Services and ontologies. BIBE 2008: 1-5

Pawel Placek, Dimitri Theodoratos, Stefanos Souldatos, Theodore Dalamagas, Timos K. Sellis: A heuristic approach for checking containment of generalized tree-pattern queries. CIKM 2008: 551-560

Dimitris Sacharidis, Kostas Patroumpas, Manolis Terrovitis, Verena Kantere, Michalis Potamias, Kyriakos Mouratidis, Timos K. Sellis: On-line discovery of hot motion paths. EDBT 2008: 392-403

Kostas Patroumpas, Evi Kefallinou, Timos K. Sellis: Monitoring continuous queries over streaming locations. GIS 2008: 81

Verena Kantere, Konstantina Palla, Kostas Patroumpas, Timos K. Sellis: A Simulator for a Mobile Peer-to-Peer Database Environment. MDM 2008: 223-224

Verena Kantere, Maria-Eirini Politou, Timos K. Sellis: Conceptual Synopses of Semantics in Social Networks Sharing Structured Data. OTM Conferences (2) 2008: 1367-1384

Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Timos K. Sellis: Serving the Sky: Discovering and Selecting Semantic Web Services through Dynamic Skyline Queries. ICSC 2008: 222-229

Dimitrios Skoutas, Dimitris Sacharidis, Verena Kantere, Timos K. Sellis: Efficient Semantic Web Service Discovery in Centralized and P2P Environments. International Semantic Web Conference 2008: 583-598

Kostas Patroumpas, Timos K. Sellis: Prioritized Evaluation of Continuous Moving Queries over Streaming Locations. SSDBM 2008: 240-257

Dimitris Sacharidis, Panagiotis Bouros, Timos K. Sellis: Caching Dynamic Skyline Queries. SSDBM 2008: 455-472

Giorgos Giannopoulos, Theodore Dalamagas, Magdalini Eirinaki, Timos K. Sellis: Boosting the ranking function learning process using clustering. WIDM 2008: 125-132

Xiaoying Wu, Stefanos Souldatos, Dimitri Theodoratos, Theodore Dalamagas, Timos K. Sellis: Efficient evaluation of generalized path pattern queries on XML data. WWW 2008: 835-844

Spiros Skiadopoulos, Nikos Sarkas, Timos K. Sellis, Manolis Koubarakis: A Family of Directional Relation Models for Extended Objects. IEEE Trans. Knowl. Data Eng. 19(8): 1116-1130 (2007)

Spiros Skiadopoulos, Nikos Sarkas, Timos K. Sellis, Manolis Koubarakis: Correction to "A Family of Directional Relation Models for Extended Objects". IEEE Trans. Knowl. Data Eng. 19(10): 1448 (2007)

Dimitrios Skoutas, Alkis Simitsis, Timos K. Sellis: A Ranking Mechanism for SemanticWeb Service Discovery. IEEE SCW 2007: 41-48

Timos K. Sellis, Alkis Simitsis: ETL Workflows: From Formal Specification to Optimization. ADBIS 2007: 1-11

Stefanos Souldatos, Xiaoying Wu, Dimitri Theodoratos, Theodore Dalamagas, Timos K. Sellis: Evaluation of partial path queries on xml data. CIKM 2007: 21-30

Stratis Viglas, Theodore Dalamagas, Vassilis Christophides, Timos K. Sellis, Aggeliki Dimitriou: Application of the Peer-to-Peer Paradigm in Digital Libraries. DELOS Conference 2007: 318-327

Verena Kantere, Dimitrios Tsoumakos, Timos K. Sellis: Semantic Grouping of Social Networks in P2P Database Settings. DEXA 2007: 689-699

Verena Kantere, Timos K. Sellis: Handling spatial data in distributed environments. GIS 2007: 3

Kostas Patroumpas, Theofanis Minogiannis, Timos K. Sellis: Approximate order-k Voronoi cells over positional streams. GIS 2007: 36

Kostas Patroumpas, Timos K. Sellis: Semantics of Spatially-Aware Windows Over Streaming Moving Objects. MDM 2007: 52-59

Dimitrios Skoutas, Verena Kantere, Alkis Simitsis, Timos K. Sellis: Ontology-Based Data Sharing in P2P Databases. SWDB-ODBIS 2007: 117-137

Michalis Potamias, Kostas Patroumpas, Timos K. Sellis: Online Amnesic Summarization of Streaming Locations. SSTD 2007: 148-166

Verena Kantere, Timos K. Sellis: A Study for the Parameters of a Distributed Framework That Handles Spatial Areas. SSTD 2007: 385-402

Theodore Dalamagas, Panagiotis Bouros, Theodore Galanis, Magdalini Eirinaki, Timos K. Sellis: Mining user navigation patterns for personalizing topic directories. WIDM 2007: 81-88

Rada Chirkova, Asuman Dogac, M. Tamer Özsu, Timos K. Sellis (Eds.): Proceedings of the 23rd International Conference on Data Engineering, ICDE 2007, The Marmara Hotel, Istanbul, Turkey, April 15-20, 2007. IEEE 2007

Stefanos Souldatos, Theodore Dalamagas, Timos K. Sellis: Captain Nemo: A Metasearch Engine with Personalized Hierarchical Search Space. Informatica (Slovenia) 30(2): 173-181 (2006)

Theodore Dalamagas, Tao Cheng, Klaas-Jan Winkel, Timos K. Sellis: A methodology for clustering XML documents by structure. Inf. Syst. 31(3): 187-228 (2006)

Timos K. Sellis, Yannis Vassiliou: Data management research at the Knowledge and Database Systems Lab: (NTU Athens). SIGMOD Record 35(2): 62-67 (2006)

Dimitri Theodoratos, Stefanos Souldatos, Theodore Dalamagas, Pawel Placek, Timos K. Sellis: Heuristic containment check of partial tree-pattern queries in the presence of index graphs. CIKM 2006: 445-454

Manolis Terrovitis, Spyros Passas, Panos Vassiliadis, Timos K. Sellis: A combination of trie-trees and inverted files for the indexing of set-valued attributes. CIKM 2006: 728-737

Michalis Potamias, Kostas Patroumpas, Timos K. Sellis: Amnesic online synopses for moving objects. CIKM 2006: 784-785

Verena Kantere, Timos K. Sellis: Reusing Classical Query Rewriting in P2P Databases. DBISP2P 2006: 285-297

Timos K. Sellis: Formal specification and optimization of ETL scenarios. DOLAP 2006: 1-2

Michael Mathioudakis, Dimitris Sacharidis, Timos K. Sellis: A study on workload-aware wavelet synopses for point and range-sum queries. DOLAP 2006: 27-34

Kostas Patroumpas, Timos K. Sellis: Window Specification over Data Streams. EDBT Workshops 2006: 445-464

Eleni G. Christodoulou, Theodore Dalamagas, Timos K. Sellis: NaviMoz: Mining Navigational Patterns in Portal Catalogs. EDBT Workshops 2006: 801-813

Timos K. Sellis: Data Management in P2P Systems: Challenges and Research Issues. ICEIS (1) 2006: 21-22

Verena Kantere, Timos K. Sellis: Data Exchange Issues in Peer-to-Peer Database Systems. ICEIS (Selected Papers) 2006: 29-37

Dimitri Theodoratos, Theodore Dalamagas, Pawel Placek, Stefanos Souldatos, Timos K. Sellis: Containment of Partially Specified Tree-Pattern Queries. SSDBM 2006: 3-12

Michalis Potamias, Kostas Patroumpas, Timos K. Sellis: Sampling Trajectory Streams with Spatiotemporal Criteria. SSDBM 2006: 275-284

Yannis Manolopoulos, Jaroslav Pokorný, Timos K. Sellis (Eds.): ADBIS 2006, Advances in Databases and Information Systems, Communications of the Tenth East-European Conference on Advances in Databases and Information Systems, Thessaloniki, Hellas, September 3-7, 2006. CEUR Workshop Proceedings 215, CEUR-WS.org 2006

Yannis Manolopoulos, Jaroslav Pokorný, Timos K. Sellis (Eds.): Advances in Databases and Information Systems, 10th East European Conference, ADBIS 2006, Thessaloniki, Greece, September 3-7, 2006, Proceedings. Lecture Notes in Computer Science 4152, Springer 2006, isbn 3-540-37899-5

Serge Abiteboul, Rakesh Agrawal, Philip A. Bernstein, Michael J. Carey, Stefano Ceri, W. Bruce Croft, David J. DeWitt, Michael J. Franklin, Hector Garcia-Molina, Dieter Gawlick, Jim Gray, Laura M. Haas, Alon Y. Halevy, Joseph M. Hellerstein, Yannis E. Ioannidis, Martin L. Kersten, Michael J. Pazzani, Michael Lesk, David Maier, Jeffrey F. Naughton, Hans-Jörg Schek, Timos K. Sellis, Avi Silberschatz, Michael Stonebraker, Richard T. Snodgrass, Jeffrey D. Ullman, Gerhard Weikum, Jennifer Widom, Stanley B. Zdonik: The Lowell database research self-assessment. Commun. ACM 48(5): 111-118 (2005)

Alkis Simitsis, Panos Vassiliadis, Timos K. Sellis: State-Space Optimization of ETL Workflows. IEEE Trans. Knowl. Data Eng. 17(10): 1404-1419 (2005)

Spiros Skiadopoulos, Christos Giannoukos, Nikos Sarkas, Panos Vassiliadis, Timos K. Sellis, Manolis Koubarakis: Computing and Managing Cardinal Direction Relations. IEEE Trans. Knowl. Data Eng. 17(12): 1610-1623 (2005)

Zoi Kaoudi, Theodore Dalamagas, Timos K. Sellis: RDFSculpt: Managing RDF Schemas Under Set-Like Semantics. ESWC 2005: 123-137

Alkis Simitsis, Panos Vassiliadis, Timos K. Sellis: Optimizing ETL Processes in Data Warehouses. ICDE 2005: 564-575

Alkis Simitsis, Panos Vassiliadis, Timos K. Sellis: Extraction-Transformation-Loading Processes. Encyclopedia of Database Technologies and Applications 2005: 240-245

Yannis Stavrakas, Kostis Pristouris, Antonis Efandis, Timos K. Sellis: Implementing a Query Language for Context-Dependent Semistructured Data. ADBIS 2004: 173-188

Spiros Skiadopoulos, Christos Giannoukos, Panos Vassiliadis, Timos K. Sellis, Manolis Koubarakis: Computing and Handling Cardinal Direction Information. EDBT 2004: 329-347

Nikos Karayannidis, Timos K. Sellis, Yannis Kouvaras: CUBE File: A File Structure for Hierarchically Clustered OLAP Cubes. EDBT 2004: 621-638

Theodore Dalamagas, Tao Cheng, Klaas-Jan Winkel, Timos K. Sellis: Clustering XML Documents Using Structural Summaries. EDBT Workshops 2004: 547-556

Panagiotis Bouros, Theodore Dalamagas, Timos K. Sellis, Manolis Terrovitis: PatManQL: A Language to Manipulate Patterns and Data in Hierarchical Catalogs. PaRMa 2004

Theodore Dalamagas, Tao Cheng, Klaas-Jan Winkel, Timos K. Sellis: Clustering XML Documents by Structure. SETN 2004: 112-121

Kostas Patroumpas, Timos K. Sellis: Managing Trajectories of Moving Objects as Data Streams. STDBM 2004: 41-48

Nikos Karayannidis, Timos K. Sellis: SISYPHUS: The implementation of a chunk-based storage manager for OLAP data cubes. Data Knowl. Eng. 45(2): 155-180 (2003)

Manolis Koubarakis, Timos K. Sellis: Introduction. Spatio-Temporal Databases: The CHOROCHRONOS Approach 2003: 1-8

Manolis Koubarakis, Yannis Theodoridis, Timos K. Sellis: Spatio-temporal Databases in the Years Ahead. Spatio-Temporal Databases: The CHOROCHRONOS Approach 2003: 345-347

Roland Pieringer, Klaus Elhardt, Frank Ramsak, Volker Markl, Robert Fenk, Rudolf Bayer, Nikos Karayannidis, Aris Tsois, Timos K. Sellis: Combining Hierarchy Encoding and Pre-Grouping: Intelligent Grouping in Star Join Processing. ICDE 2003: 329-340

Aris Tsois, Timos K. Sellis: The Generalized Pre-Grouping Transformation: Aggregate-Query Optimization in the Presence of Dependencies. VLDB 2003: 644-655

Manolis Koubarakis, Timos K. Sellis, Andrew U. Frank, Stéphane Grumbach, Ralf Hartmut Güting, Christian S. Jensen, Nikos A. Lorentzos, Yannis Manolopoulos, Enrico Nardelli, Barbara Pernici, Hans-Jörg Schek, Michel Scholl, Babis Theodoulidis, Nectaria Tryfona (Eds.): Spatio-Temporal Databases: The CHOROCHRONOS Approach. Lecture Notes in Computer Science 2520, Springer 2003, isbn 3-540-40552-6

Serge Abiteboul, Rakesh Agrawal, Philip A. Bernstein, Michael J. Carey, Stefano Ceri, W. Bruce Croft, David J. DeWitt, Michael J. Franklin, Hector Garcia-Molina, Dieter Gawlick, Jim Gray, Laura M. Haas, Alon Y. Halevy, Joseph M. Hellerstein, Yannis E. Ioannidis, Martin L. Kersten, Michael J. Pazzani, Michael Lesk, David Maier, Jeffrey F. Naughton, Hans-Jörg Schek, Timos K. Sellis, Avi Silberschatz, Michael Stonebraker, Richard T. Snodgrass, Jeffrey D. Ullman, Gerhard Weikum, Jennifer Widom, Stanley B. Zdonik: The Lowell Database Research Self Assessment. CoRR cs.DB/0310006 (2003)

Aris Tsois, Nikos Karayannidis, Timos K. Sellis, Dimitri Theodoratos: Cost-based optimization of aggregation star queries on hierarchically clustered data warehouses. DMDW 2002: 62-71

Nikos Karayannidis, Aris Tsois, Timos K. Sellis, Roland Pieringer, Volker Markl, Frank Ramsak, Robert Fenk, Klaus Elhardt, Rudolf Bayer: Processing Star Queries on Hierarchically-Clustered Fact Tables. VLDB 2002: 730-741

Dimitri Theodoratos, Spyros Ligoudistianos, Timos K. Sellis: View selection for designing the global data warehouse. Data Knowl. Eng. 39(3): 219-240 (2001)

Panos Vassiliadis, Zografoula Vagena, Spiros Skiadopoulos, Nikos Karayannidis, Timos K. Sellis: ARKTOS: towards the modeling, design, control and execution of ETL processes. Inf. Syst. 26(8): 537-561 (2001)

Aris Tsois, Nikos Karayannidis, Timos K. Sellis: MAC: Conceptual data modeling for OLAP. DMDW 2001: 5

Nikos Karayannidis, Timos K. Sellis: SISYPHUS: A Chunk-Based Storage Manager for OLAP Cubes. DMDW 2001: 10

Iosif Lazaridis, Michalis Vazirgiannis, Timos K. Sellis: STEDEL: A Language For Interactive Spatiotemporal Compositions. ICME 2001

Nikos Karayannidis, Aris Tsois, Panos Vassiliadis, Timos K. Sellis: Design of the ERATOSTHENES OLAP Server. Panhellenic Conference on Informatics 2001: 32-49

Sharad Mehrotra, Timos K. Sellis (Eds.): Proceedings of the 2001 ACM SIGMOD international conference on Management of data, Santa Barbara, CA, USA, May 21-24, 2001. ACM 2001, isbn 1-58113-332-4

Timos K. Sellis: Review - The R*-Tree: An Efficient and Robust Access Method for Points and Rectangles. ACM SIGMOD Digital Review 2 (2000)

Timos K. Sellis: Review - The Aqua Approximate Query Answering System. ACM SIGMOD Digital Review 2 (2000)

Timos K. Sellis: Review - A Logical Approach to Multidimensional Databases. ACM SIGMOD Digital Review 2 (2000)

Timos K. Sellis: Review - Query Optimization by Simulated Annealing. ACM SIGMOD Digital Review 2 (2000)

Timos K. Sellis: Review - Efficient Processing of Spatial Joins Using R-Trees. ACM SIGMOD Digital Review 2 (2000)

Dimitri Theodoratos, Timos K. Sellis: Incremental Design of a Data Warehouse. J. Intell. Inf. Syst. 15(1): 7-27 (2000)

Michalis Vazirgiannis, D. Tsirikos, Th. Markousis, M. Trafalis, Y. Stamati, Michael Hatzopoulos, Timos K. Sellis: Interactive Multimedia Documents: A Modeling, Authoring and Rendering Approach. Multimedia Tools Appl. 12(2/3): 145-188 (2000)

Yannis Theodoridis, Emmanuel Stefanakis, Timos K. Sellis: Efficient Cost Models for Spatial Queries Using R-Trees. IEEE Trans. Knowl. Data Eng. 12(1): 19-32 (2000)

Isabelle Mirbel, Barbara Pernici, Timos K. Sellis, S. Tserkezoglou, Michalis Vazirgiannis: Checking the Temporal Integrity of Interactive Multimedia Documents. VLDB J. 9(2): 111-130 (2000)

Timos K. Sellis: Databases Supporting Changes in Changing Worlds-The Case Spatio-Temporal Database Systems. IDEAS 2000: 145

Dimitri Theodoratos, Timos K. Sellis: Answering Multidimensional Queries on Cubes Using Other Cubes. SSDBM 2000: 109-123

Dimitri Theodoratos, Timos K. Sellis: Designing Data Warehouses. Data Knowl. Eng. 31(3): 279-301 (1999)

Emmanuel Stefanakis, Michalis Vazirgiannis, Timos K. Sellis: Incorporating fuzzy set methodologies in a DBMS repository for the application domain of GIS. International Journal of Geographical Information Science 13(7): 657-675 (1999)

Michalis Vazirgiannis, Ioannis Kostalas, Timos K. Sellis: Specifying and Authoring Multimedia Scenarios. IEEE MultiMedia 6(3): 24-37 (1999)

Richard T. Snodgrass, Serge Abiteboul, Sophie Cluet, Michael J. Franklin, Guy M. Lohman, David B. Lomet, Gultekin Özsoyoglu, Raghu Ramakrishnan, Kenneth A. Ross, Timos K. Sellis, Patrick Valduriez: Reminiscences on Influential Papers. SIGMOD Record 28(1): 110-114 (1999)

Andrew U. Frank, Stéphane Grumbach, Ralf Hartmut Güting, Christian S. Jensen, Manolis Koubarakis, Nikos A. Lorentzos, Yannis Manolopoulos, Enrico Nardelli, Barbara Pernici, Hans-Jörg Schek, Michel Scholl, Timos K. Sellis, Babis Theodoulidis, Peter Widmayer: Chorochronos: A Research Network for Spatiotemporal Database Systems. SIGMOD Record 28(3): 12-21 (1999)

Panos Vassiliadis, Timos K. Sellis: A Survey of Logical Models for OLAP Databases. SIGMOD Record 28(4): 64-69 (1999)

Dimitri Theodoratos, Spyros Ligoudistianos, Timos K. Sellis: Designing the Global Data Warehouse with SPJ Views. CAiSE 1999: 180-194

Yannis Vassiliou, Matthias Jarke, Timos K. Sellis, Eric Simon: Panel on Data Warehouse Quality Issues. CoopIS 1999: 8-9

Dimitri Theodoratos, Timos K. Sellis: Dynamic Data Warehouse Design. DaWaK 1999: 1-10

Spyros Ligoudistianos, Timos K. Sellis, Dimitri Theodoratos, Yannis Vassiliou: Heuristic Algorithms for Designing a Data Warehouse with SPJ Views. DaWaK 1999: 96-105

Timos K. Sellis: CHOROCHRONOS: Research on Spatiotemporal Database Systems. DEXA Workshop 1999: 452-456

Ioannis Kostalas, Timos K. Sellis, Michalis Vazirgiannis: Spatiotemporal Specification & Verification of Multimedia Scenarios. DS-8 1999: 169-188

Timos K. Sellis: CHOROCHRONOS - Research on Spatio-temporal Database Systems. Integrated Spatial Databases 1999: 308-316

Timos K. Sellis: Research Issues in Spatio-temporal Database Systems. SSD 1999: 5-11

Yannis Theodoridis, Dimitris Papadias, Emmanuel Stefanakis, Timos K. Sellis: Direction Relations and Two-Dimensional Range Queries: Optimisation Techniques. Data Knowl. Eng. 27(3): 313-336 (1998)

Michalis Vazirgiannis, Yannis Theodoridis, Timos K. Sellis: Spatio-Temporal Composition and Indexing for Large Multimedia Applications. Multimedia Syst. 6(4): 284-298 (1998)

Costas Vassilakis, Panagiotis Georgiadis, Timos K. Sellis: Implementing Embedded Valid Time Query Languages. DEXA 1998: 561-572

Spyros Ligoudistianos, Dimitri Theodoratos, Timos K. Sellis: Experimental Evaluation of Data Warehouse Configuration Algorithms. DEXA Workshop 1998: 218-223

Dimitri Theodoratos, Timos K. Sellis: Data Warehouse Schema and Instance Design. ER 1998: 363-376

Yannis Theodoridis, Emmanuel Stefanakis, Timos K. Sellis: Cost Models for Join Queries in Spatial Databases. ICDE 1998: 476-483

Yannis Theodoridis, Timos K. Sellis, Apostolos Papadopoulos, Yannis Manolopoulos: Specifications for Efficient Indexing in Spatiotemporal Databases. SSDBM 1998: 123-132

Theodore Dalamagas, Timos K. Sellis, L. Sinos: A Visual Database System for Spatial and Non-Spatial Data Management. VDB 1998: 105-122

L. Sinos, Theodore Dalamagas, Timos K. Sellis: Image Information System (IIS): A Visual Database System for Spatial and Non-Spatial Data Management. VDB 1998: 161-167

Emmanuel Stefanakis, Yannis Theodoridis, Timos K. Sellis, Yuk-Cheung Lee: Point Representation of Spatial Objects and Query Window Extension: A New Technique for Spatial Access Methods. International Journal of Geographical Information Science 11(6): 529-554 (1997)

Yannis E. Ioannidis, Raymond T. Ng, Kyuseok Shim, Timos K. Sellis: Parametric Query Optimization. VLDB J. 6(2): 132-151 (1997)

Timos K. Sellis, Nick Roussopoulos, Christos Faloutsos: Multidimensional Access Methods: Trees Have Grown Everywhere. VLDB 1997: 13-14

Dimitri Theodoratos, Timos K. Sellis: Data Warehouse Configuration. VLDB 1997: 126-135

Yannis Theodoridis, Michalis Vazirgiannis, Timos K. Sellis: Spatio-Temporal Indexing for Large Multimedia Applications. ICMCS 1996: 441-448

Michalis Vazirgiannis, Timos K. Sellis: Event and Action Representation and Composition for Multimedia Application Scenario Modelling. IDMS 1996: 71-89

Yannis Theodoridis, Timos K. Sellis: A Model for the Prediction of R-tree Performance. PODS 1996: 161-171

Timos K. Sellis, Yannis Vassiliou: The Database Group at National Technical University of Athens (NTUA). SIGMOD Record 24(4): 78-83 (1995)

Christos Faloutsos, Raymond T. Ng, Timos K. Sellis: Flexible and Adaptable Buffer Management Techniques for Database Management Systems. IEEE Trans. Computers 44(4): 546-560 (1995)

Dimitris Papadias, Timos K. Sellis: A Pictorial Query-by-Example Language. J. Vis. Lang. Comput. 6(1): 53-72 (1995)

Dimitris Papadias, Yannis Theodoridis, Timos K. Sellis, Max J. Egenhofer: Topological Relations in the World of Minimum Bounding Rectangles: A Study with R-trees. SIGMOD Conference 1995: 92-103

Timos K. Sellis (Ed.): Rules in Database Systems, Second International Workshop, RIDS '95, Glyfada, Athens, Greece, September 25 - 27, 1995, Proceedings. Lecture Notes in Computer Science 985, Springer 1995, isbn 3-540-60365-4

Kyuseok Shim, Timos K. Sellis, Dana S. Nau: Improvements on a Heuristic Algorithm for Multiple-Query Optimization. Data Knowl. Eng. 12(2): 197-222 (1994)

Louiqa Raschid, Timos K. Sellis, Alex Delis: A Simulation-Based Study on the Concurrent Execution of Rules in a Database Environment. J. Parallel Distrib. Comput. 20(1): 20-42 (1994)

Dimitris Papadias, Timos K. Sellis: Qualitative Representation of Spatial Knowledge in Two-Dimensional Space. VLDB J. 3(4): 479-516 (1994)

Dimitris Papadias, Yannis Theodoridis, Timos K. Sellis: The Retrieval of Direction Relations using R-trees. DEXA 1994: 173-182

Yannis Theodoridis, Timos K. Sellis: Optimization Issues in R-tree Construction (Extended Abstract). IGIS 1994: 270-273

Asuman Dogac, M. Tamer Özsu, Alexandros Biliris, Timos K. Sellis (Eds.): Advances in Object-Oriented Database Systems, Proceedings of the NATO Advanced Study Institute on Object-Oriented Database Systems, held in Izmir, Kusadasi, Turkey, August 6-16, 1993. NATO ASI Series F: Computing and Systems Sciences 130, 1994, isbn 3-540-57825-0

Timos K. Sellis, Chih-Chen Lin, Louiqa Raschid: Coupling Production Systems and Database Systems: A Homogeneous Approach. IEEE Trans. Knowl. Data Eng. 5(2): 240-256 (1993)

Christian S. Jensen, Leo Mark, Nick Roussopoulos, Timos K. Sellis: Using Differential Techniques to Efficiently Support Transaction Time. VLDB J. 2(1): 75-111 (1993)

John Grant, Witold Litwin, Nick Roussopoulos, Timos K. Sellis: Query Languages for Relational Multidatabases. VLDB J. 2(2): 153-171 (1993)

Dimitris Papadias, Timos K. Sellis: The Semantics of Relations in 2D Space Using Representative Points: Spatial Indexes. COSIT 1993: 234-247

Mike P. Papazoglou, Timos K. Sellis: Preface. Int. J. Cooperative Inf. Syst. 1(1): 1-4 (1992)

Mike P. Papazoglou, S. C. Laufmann, Timos K. Sellis: An Organizational Framework for Cooperating Intelligent Information Systems. Int. J. Cooperative Inf. Syst. 1(1): 169-202 (1992)

Yannis E. Ioannidis, Timos K. Sellis: Supporting Inconsistent Rules in Database Systems. J. Intell. Inf. Syst. 1(3/4): 243-270 (1992)

Timos K. Sellis, Chih-Chen Lin: A Geometric Approach to Indexing Large Rule Bases. EDBT 1992: 405-420

Dimitris Papadias, Timos K. Sellis: Spatial Reasoning Using Symbolic Arrays. Spatio-Temporal Reasoning 1992: 153-161

Alex Delis, Louiqa Raschid, Timos K. Sellis: Experiments on the Concurrent Rule Execution in Database Systems. ICTAI 1992: 405-412

Yannis E. Ioannidis, Raymond T. Ng, Kyuseok Shim, Timos K. Sellis: Parametric Query Optimization. VLDB 1992: 103-114

Nick Roussopoulos, Leo Mark, Timos K. Sellis, Christos Faloutsos: An Architecture for High Performance Engineering Information Systems. IEEE Trans. Software Eng. 17(1): 22-33 (1991)

Timos K. Sellis, Leonard D. Shapiro: Query Optimization for Nontraditional Database Applications. IEEE Trans. Software Eng. 17(1): 77-86 (1991)

Raymond T. Ng, Christos Faloutsos, Timos K. Sellis: Flexible Buffer Allocation Based on Marginal Gains. SIGMOD Conference 1991: 387-396

Christos Faloutsos, Raymond T. Ng, Timos K. Sellis: Predictive Load Control for Flexible Buffer Allocation. VLDB 1991: 265-274

Timos K. Sellis, Nick Roussopoulos, Raymond T. Ng: Efficient compilation of large rule bases using logical access paths. Inf. Syst. 15(1): 73-84 (1990)

John Grant, Timos K. Sellis: Extended database logic: Complex objects and deduction. Inf. Sci. 52(1): 85-110 (1990)

Timos K. Sellis, Subrata Ghosh: On the Multiple-Query Optimization Problem. IEEE Trans. Knowl. Data Eng. 2(2): 262-266 (1990)

Louiqa Raschid, Timos K. Sellis, Chih-Chen Lin: Exploiting Concurrency in a DBMS Implementation for Production Systems. IEEE Data Eng. Bull. 12(1): 37-43 (1989)

Chih-Chen Lin, Leo Mark, Timos K. Sellis, Christos Faloutsos: Performance Issues in the Binary Relationship Model. Data Knowl. Eng. 4: 195-221 (1989)

Timos K. Sellis: Special Issue on Rule Management and Processing in Expert Database Systems - Letter from the Guest Editor. SIGMOD Record 18(3): 3-4 (1989)

Timos K. Sellis, Chih-Chen Lin, Louiqa Raschid: Data Intensive Production Systems: The DIPS Approach. SIGMOD Record 18(3): 52-57 (1989)

Yannis E. Ioannidis, Timos K. Sellis: Conflict Resolution of Rules Assigning Values to Virtual Attributes. SIGMOD Conference 1989: 205-214

Timos K. Sellis, Nick Roussopoulos, Leo Mark, Christos Faloutsos: Expert Database Systems: Efficient Support for Engineering Environments. Data Knowl. Eng. 3: 71-85 (1988)

Timos K. Sellis: Intelligent caching and indexing techniques for relational database systems. Inf. Syst. 13(2): 175-185 (1988)

Sakti P. Ghosh, Chih-Chen Lin, Timos K. Sellis: Implementation of a Prolog-INGRES Interface. SIGMOD Record 17(2): 77-88 (1988)

Timos K. Sellis: Multiple-Query Optimization. ACM Trans. Database Syst. 13(1): 23-52 (1988)

Nick Roussopoulos, Christos Faloutsos, Timos K. Sellis: An Efficient Pictorial Database System for PSQL. IEEE Trans. Software Eng. 14(5): 639-650 (1988)

Louiqa Raschid, Timos K. Sellis, Chih-Chen Lin: Exploiting Concurrency in a DBMS Implementation for Production. DPDS 1988: 34-45

Timos K. Sellis, Nick Roussopoulos: Deep Compilation of Large Rule Bases. Expert Database Conf. 1988: 525-549

Timos K. Sellis, Chih-Chen Lin, Louiqa Raschid: Implementing Large Production Systems in a DBMS Environment: Concepts and Algorithms. SIGMOD Conference 1988: 404-412

John Grant, Timos K. Sellis: Deductive Heterogeneous Databases. ISMIS 1987: 159-166

Timos K. Sellis: Efficiently Supporting Procedures in Relational Database Systems. SIGMOD Conference 1987: 278-291

Christos Faloutsos, Timos K. Sellis, Nick Roussopoulos: Analysis of Object Oriented Spatial Access Methods. SIGMOD Conference 1987: 426-439

Timos K. Sellis, Nick Roussopoulos, Christos Faloutsos: The R+-Tree: A Dynamic Index for Multi-Dimensional Objects. VLDB 1987: 507-518

Michael Stonebraker, Timos K. Sellis, Eric N. Hanson: An Analysis of Rule Indexing Implementations in Data Base Systems. Expert Database Conf. 1986: 465-476

Timos K. Sellis: Global Query Optimization. SIGMOD Conference 1986: 191-205

Timos K. Sellis, Leonard D. Shapiro: Optimization of Extended Database Query Languages. SIGMOD Conference 1985: 424-436

Ru-Mei Kung, Eric N. Hanson, Yannis E. Ioannidis, Timos K. Sellis, Leonard D. Shapiro, Michael Stonebraker: Heuristic Search in Data Base Systems. Expert Database Workshop 1984: 537-548