Publications

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 

Towards Scalable Visual Exploration of Very Large RDF Graphs. Nikos Bikakis, John Liagouris, Maria Kromida, George Papastefanatos, and Timos Sellis. 12th Extended Semantic Web Conference (ESWC 2015), 2015 

Airport Context Analytics. Eli Katsiri, George Papastefanatos, Manolis Terrovitis, Timos Sellis. In 8th International Conference on Web Reasoning and Rule Systems, (RR2014), September 2014, Athens, Greece., 2014 

A Study on External Memory Scan-based Skyline Algorithms. Nikos Bikakis, Dimitris Sacharidis, Timos Sellis. 25th International Conference on Database and Expert Systems Applications (DEXA '14), 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 

Personalizing keyword search on RDF data. Giorgos Giannopoulos, Evmorfia Biliri and Timos Sellis. TPDL 2013: 272-278, 2013 

RDivF: Diversifying Keyword Search on RDF Graphs. • Nikos Bikakis, Giorgos Giannopoulos, John Liagouris, Dimitrios Skoutas, Theodore Dalamagas, and Timos Sellis. 17th International Conference on Theory and Practice of Digital Libraries (TPDL '13), 2013 

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

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

Multiplexing Trajectories of Moving Objects. K. Patroumpas, K. Toumbas, and T. Sellis. Proceedings of the 24th International Conference on Scientific and Statistical Database Management (SSDBM 2012), pp. 595-600, Chania, Greece, June 2012, 2012 

Probabilistic Range Monitoring of Streaming Uncertain Positions in GeoSocial Networks. K. Patroumpas, M. Papamichalis, and T. Sellis. Proceedings of the 24th International Conference on Scientific and Statistical Database Management (SSDBM 2012), pp. 20-37, Chania, Greece, June 2012, 2012 

Event Processing and Real-Time Monitoring over Streaming Traffic Data. K. Patroumpas and T. Sellis. Proceedings of the 11th International Symposium on Web and Wireless Geographical Information Systems (W2GIS 2012), pp. 116-133, Naples, Italy, April 2012, 2012 

Subsuming Multiple Sliding Windows for Shared Stream Computation. K. Patroumpas and T. Sellis. Proceedings of the 15th East-European Conference on Advances in Databases and Information Systems (ADBIS 2011), pp. 56-69, Vienna, Austria, September 2011, 2011 

Learning to rank user intent. Giorgos Giannopoulos, Ulf Brefeld, Theodore Dalamagas, and Timos Sellis. Proceedings of the 20th ACM International Conference on Information and Knowledge Management (CIKM’11), 2011 

Search behavior-driven training for result re-ranking. Giorgos Giannopoulos, Theodore Dalamagas, and Timos Sellis. Proceedings of the International Conference on Theory and Practice of Digital Libraries (TPDL’11), 2011 

Dynamic pickup and delivery with transfers. Panagiotis Bouros, Dimitris Sacharidis, Theodore Dalamagas, and Timos Sellis. Proceedings of the 12th International Symposium on Spatial and Temporal Databases (SSTD’11), 2011 

Efficient Answering of Set Containment Queries for Skewed Item Distributions. Manolis Terrovitis, Panagiotis Bouros, Panos Vassiliadis,Timos Sellis, Nikos Mamoulis. In Proceedings of the 14th International Conference on Extending Database Technology (EDBT '11), Uppsala, Sweden, 2011, 2011 

Multi-granular Time-Based Sliding Windows over Data Streams. K. Patroumpas and T. Sellis. Proceedings of the 17th International Symposium on Temporal Representation and Reasoning (TIME 2010), pp. 146-153, Paris, France, September 2010, 2010 

Probabilistic Contextual Skylines. Dimitris Sacharidis, Anastasios Arvanitis, Timos Sellis. 26th International Conference on Data Engineering (ICDE'10), 2010 

GoNTogle: a Tool for Semantic Annotation and Search. Giorgos Giannopoulos, Nikos Bikakis, Theodore Dalamagas, Timos Sellis. ESWC 2010 (demo paper), 2010

Integrating Keywords and Semantics on Document Annotation and Search. Nikos Bikakis, Giorgos Giannopoulos, Theodore Dalamagas, Timos Sellis. ODBASE 2010, 2010

Collaborative information spaces: Research directions at IMIS. George Papastefanatos, Yannis Stavrakas, Christos Papatheodorou, Theodore Dalamagas, Dieter Pfoser, Timos Sellis. 2nd ERCIM DIS Workshop on large scale and federated information spaces, Amsterdam, 2010 

Evolution of Interrelated Data: Users, Problems, and Systems. Yannis Stavrakas, Theodore Dalamagas, Timos Sellis. 1st ERCIM DIS Workshop on large scale and federated information spaces, Paris, 2009 

Collaborative Ranking Function Training for Web Search Personalization. Giorgos Giannopoulos, Theodore Dalamagas and Timos Sellis. PersDB 2009 : 13 - 18, 2009 

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

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

Rule-based Management of Schema Changes at ETL sources. George Papastefanatos, Panos Vassiliadis, Alkis Simitsis, Timos Sellis, Yannis Vassiliou. Workshop on Managing Evolution of Data Warehouses (MEDWa ’09), 2009

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

A tool for mapping discovery over revealing schemas. Verena Kantere, Dimos Mpousounis, Timos Sellis. 12th International Conference on Extending Database Technology, 2009

Top-k Dominant Web Services under Multi-Criteria Matching. Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Verena Kantere, Timos Sellis. In Proceedings of the 12th International Conference on Extending Database Technology (EDBT '09), 2009 

Database interoperability through Web Services and ontologies. T. Sellis, D. Skoutas, K. Staikos. 8th IEEE International Conference on BioInformatics and BioEngineering, BIBE 2008. pages:1-5, 2008 

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

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

On-Line Discovery of Hot Motion Paths. Dimitris Sacharidis, Kostas Patroumpas, Manolis Terrovitis, Verena Kantere, Michalis Potamias, Kyriakos Mouratidis, Timos Sellis. EDBT 2008: 392-403, 2008 

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

Ontology-Based Data Sharing in P2P Databases. Dimitrios Skoutas, Verena Kantere, Alkis Simitsis, Timos Sellis. In post-proceedings of the joint ODBIS & SWDB VLD'07 - workshop on Semantic Web, Ontologies, Databases, LNCS 5005, pp117-137, 2008 

Efficient Semantic Web Service Discovery in Centralized P2P Environments. Dimitrios Skoutas, Dimitris Sacharidis, Verena Kantere, Timos Sellis. In Proc. of the 7th International Semantic Web Conference (ISWC), pp 583-598, 2008 

Serving the Sky: Discovering and Selecting Semantic Web Services through Dynamic Skyline Queries. Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Timos Sellis. In Proc. of the 2nd IEEE International Conference on Semantic Computing (ICSC), pp 222-229, 2008 

mirPub: a database for searching microRNA publications. Thanasis Vergoulis, Ilias Kanellos, Nikos Kostoulas, Georgios Georgakilas, Timos Sellis, Artemis Hatzigeorgiou, Theodore Dalamagas. Bioinformatics 31 (9): 1502-1504, 2014 

Approximate Regional Sequence Matching for Genomic Databases. T. Vergoulis, T. Dalamagas, D. Sacharidis, T. Sellis. Volume 21, Issue 6, pp 779-795, 2012 

Maintaining Consistent Results of Continuous Queries under Diverse Window Specifications. K. Patroumpas and T. Sellis. Information Systems, Vol. 36, No. 1, pp. 42-61, March 2011, 2011 

Processing and evaluating partial tree pattern queries on xml data. Xiaoying Wu, Stefanos Souldatos, Dimitri Theodoratos, Theodore Dalamagas, Yannis Vassiliou, and Timos Sellis. IEEE Transactions on Knowledge and Data Engineering (TKDE), 2011 

Evaluating Path Queries over Frequently Updated Route Collections. P. Bouros, D. Sacharidis, T. Dalamagas, S. Skiadopoulos, T. Sellis. TKDE, 2011

miRGen 2.0 a database of microRNA genomic information and regulation. P. Alexiou, T. Vergoulis, M. Gleditzsch, G. Prekas, T. Dalamagas, M. Megraw, I. Grosse, T. Sellis, A.G. Hatzigeorgiou. Nucleic Acid Research (NAR), 38, 2010 

Ranking and Clustering Web Services using Multi-Criteria Dominance Relationships. Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Timos Sellis. IEEE Transactions on Services Computing, Special issue on Query Models and Efficient Selection of Web Services (to appear), 2010

Accurate microRNA target prediction correlates with protein repression levels. Manolis Maragkakis, Panagiotis Alexiou, Giorgio L Papadopoulos, Martin Reczko, Theodore Dalamagas, George Giannopoulos, George Goumas, Evangelos Koukis, Kornilios Kourtis, Victor A Simossis, Praveen Sethupathy, Thanasis Vergoulis, Nectarios Koziris, . BMC Bioinformatics, 10, 2009 

DIANA-microT web server: elucidating microRNA functions through target prediction. Maragkakis M, Reczko M, Simossis VA, Alexiou P, Papadopoulos GL, Dalamagas T, Giannopoulos G, Goumas G, Koukis E, Kourtis K, Vergoulis T, Koziris N, Sellis T, Tsanakas P, Hatzigeorgiou AG. Nucleic Acids Research (NAR) volume 37, 2009 

Containment of Partially Specified Tree-Pattern Queries in the Presence of Dimension Graphs. Dimitri Theodoratos, Pawel Placek, Theodore Dalamagas, Stefanos Souldatos, Timos Sellis. VLDB Journal 18 (1): 233-254, 2009 

Hierarchically Compressed Wavelet Synopses. Dimitris Sacharidis, Antonios Deligiannakis, Timos Sellis. VLDB Journal. 18(1): 203-231, 2009 

Ontology-driven Conceptual Design of ETL Processes using Graph Transformations. Dimitrios Skoutas, Alkis Simitsis, Timos Sellis. LNCS Journal on Data Semantics (JoDS), Special issue on , 2009

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

Efficient Answering of Set Containment Queries for Skewed Item Distributions. Manolis Terrovitis, Panagiotis Bouros, Panos Vassiliadis, Timos Sellis, Nikos Mamoulis. TR-IMIS-2010-1, 2010 

Methods on retrieving sources and data from the Web, for supporting scientific innovation. Giorgos Giannopoulos. National Technical University of Athens, Greece, 2013 

Discovery and Integration of Data and Services in the Semantic Web. Dimitrios Skoutas. PhD Thesis, School of Electrical and Computer Engineering, National Technical University of Athens, 2008

Privacy in the publication and exchange of data. Georgios Gratsias, Dimitris Sacharidis, Manolis Terrovitis and Timos Sellis. In Privacy and Information and Communication Technologies: Technical and Legal Issues, C. Lambrinoudakis, L. Mitrou, S. Gritzalis, S. K. Katsikas, Eds, Athens, Greece, Papasotiriou Pubs. (in Greek), 2009