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Note: Links lead to the DBLP on the Web. Vassilis J. Tsotras Petko Bakalov , Marios Hadjieleftheriou , Vassilis J. Tsotras: Time relaxed spatiotemporal trajectory joins. GIS 2005 : 182-191 Petko Bakalov , Marios Hadjieleftheriou , Eamonn J. Keogh , Vassilis J. Tsotras: Efficient trajectory joins using symbolic representations. Mobile Data Management 2005 : 86-93 Mirella Moura Moro , Zografoula Vagena , Vassilis J. Tsotras: Tree-Pattern Queries on a Lightweight XML Processor. VLDB 2005 : 205-216 Marios Hadjieleftheriou , George Kollios , Petko Bakalov , Vassilis J. Tsotras: Complex Spatio-Temporal Pattern Queries. VLDB 2005 : 877-888 Zografoula Vagena , Nick Koudas , Divesh Srivastava , Vassilis J. Tsotras: Answering order-based queries over XML data. WWW (Special interest tracks and posters) 2005 : 1162-1163 Priya Mandawat , Vassilis J. Tsotras: Indexing Schemes for Efficient Aggregate Computation over Structural Joins. WebDB 2005 : 55-60 Zografoula Vagena , Nick Koudas , Divesh Srivastava , Vassilis J. Tsotras: Efficient Handling of Positional Predicates Within XML Query Processing. XSym 2005 : 68-83 Marios Hadjieleftheriou , Erik G. Hoel , Vassilis J. Tsotras: SaIL: A Spatial Index Library for Efficient Application Integration. GeoInformatica 9 (4): 367-389 (2005) Dimitrios Gunopulos , George Kollios , Vassilis J. Tsotras, Carlotta Domeniconi : Selectivity estimators for multidimensional range queries over real attributes. VLDB J. 14 (2): 137-154 (2005) Donghui Zhang , Vassilis J. Tsotras: Optimizing spatial Min/Max aggregations. VLDB J. 14 (2): 170-181 (2005) George Kollios , Dimitris Papadopoulos , Dimitrios Gunopulos , Vassilis J. Tsotras: Indexing mobile objects using dual transformations. VLDB J. 14 (2): 238-256 (2005) Peggy Agouris , Anthony Stefanidis , Kate Beard , Mark Gahegan , Vassilis J. Tsotras, Dimitrios Gunopulos : Knowledge Management Over Time-Varying Geospatial Datasets. DG.O 2004 Zografoula Vagena , Mirella Moura Moro , Vassilis J. Tsotras: Efficient Processing of XML Containment Queries Using Partition-Based Schemes. IDEAS 2004 : 161-170 Zografoula Vagena , Mirella Moura Moro , Vassilis J. Tsotras: Supporting Branched Versions on XML Documents. RIDE 2004 : 137-144 Marios Hadjieleftheriou , Vassil Kriakov , Yangui Tao , George Kollios , Alex Delis , Vassilis J. Tsotras: Spatio-Temporal Data Services in a Shared-Nothing Environment. SSDBM 2004 : 131-134 Marios Hadjieleftheriou , Erik G. Hoel , Vassilis J. Tsotras: SaIL: A Library for Efficient Application Integration of Spatial Indices. SSDBM 2004 : 135- Zografoula Vagena , Mirella Moura Moro , Vassilis J. Tsotras: Twig Query Processing over Graph-Structured XML Data. WebDB 2004 : 43-48 Marios Hadjieleftheriou , George Kollios , Vassilis J. Tsotras: Performance Evaluation of Spatio-temporal Selectivity Estimation Techniques. SSDBM 2003 : 202-211 Marios Hadjieleftheriou , George Kollios , Dimitrios Gunopulos , Vassilis J. Tsotras: On-Line Discovery of Dense Areas in Spatio-temporal Databases. SSTD 2003 : 306-324 Zografoula Vagena , Vassilis J. Tsotras: Path-expression Queries over Multiversion XML Documents. WebDB 2003 : 49-54 Donghui Zhang , Dimitrios Gunopulos , Vassilis J. Tsotras, Bernhard Seeger : Temporal and spatio-temporal aggregations over data streams using multiple time granularities. Inf. Syst. 28 (1-2): 61-84 (2003) Dimitris Papadopoulos , George Kollios , Dimitrios Gunopulos , Vassilis J. Tsotras: Indexing Mobile Objects on the Plane. DEXA Workshops 2002 : 693-697 Shu-Yao Chien , Vassilis J. Tsotras, Carlo Zaniolo , Donghui Zhang : Efficient Complex Query Support for Multiversion XML Documents. EDBT 2002 : 161-178 Marios Hadjieleftheriou , George Kollios , Vassilis J. Tsotras, Dimitrios Gunopulos : Efficient Indexing of Spatiotemporal Objects. EDBT 2002 : 251-268 Donghui Zhang , Dimitrios Gunopulos , Vassilis J. Tsotras, Bernhard Seeger : Temporal Aggregation over Data Streams Using Multiple Granularities. EDBT 2002 : 646-663 Donghui Zhang , Vassilis J. Tsotras, Bernhard Seeger : Efficient Temporal Join Processing Using Indices. ICDE 2002 : 103- Donghui Zhang , Vassilis J. Tsotras, Dimitrios Gunopulos : Efficient Aggregation over Objects with Extent. PODS 2002 : 121-132 Donghui Zhang , Vassilis J. Tsotras: Index Based Processing of Semi-Restrictive Temporal Joins. TIME 2002 : 70-77 Shu-Yao Chien , Zografoula Vagena , Donghui Zhang , Vassilis J. Tsotras, Carlo Zaniolo : Efficient Structural Joins on Indexed XML Documents. VLDB 2002 : 263-274 Dimitris Papadopoulos , George Kollios , Dimitrios Gunopulos , Vassilis J. Tsotras: Indexing Mobile Objects Using Duality Transforms. IEEE Data Eng. Bull. 25 (2): 18-24 (2002) George Kollios , Vassilis J. Tsotras: Hashing Methods for Temporal Data. IEEE Trans. Knowl. Data Eng. 14 (4): 902-919 (2002) Shu-Yao Chien , Vassilis J. Tsotras, Carlo Zaniolo : Efficient schemes for managing multiversionXML documents. VLDB J. 11 (4): 332-353 (2002) Christian S. Jensen , Markus Schneider , Bernhard Seeger , Vassilis J. Tsotras: Advances in Spatial and Temporal Databases, 7th International Symposium, SSTD 2001, Redondo Beach, CA, USA, July 12-15, 2001, Proceedings Springer 2001 Donghui Zhang , Vassilis J. Tsotras: Improving Min/Max Aggregation over Spatial Objects. ACM-GIS 2001 : 88-93 Donghui Zhang , Alexander Markowetz , Vassilis J. Tsotras, Dimitrios Gunopulos , Bernhard Seeger : Efficient Computation of Temporal Aggregates with Range Predicates. PODS 2001 Shu-Yao Chien , Vassilis J. Tsotras, Carlo Zaniolo : Copy-Based versus Edit-Based Version Management Schemes for Structured Documents. RIDE-DM 2001 : 95-102 Shu-Yao Chien , Vassilis J. Tsotras, Carlo Zaniolo : Efficient Management of Multiversion Documents by Object Referencing. VLDB 2001 : 291-300 Shu-Yao Chien , Vassilis J. Tsotras, Carlo Zaniolo , Donghui Zhang : Storing and Querying Multiversion XML Documents using Durable Node Numbers. WISE (1) 2001 : 232- Leana Golubchik , Satish K. Tripathi , Vassilis J. Tsotras: Introduction to the Special Section on the Fifth International Workshop on Multimedia Information Systems. IEEE Trans. Knowl. Data Eng. 13 (5): 719-720 (2001) George Kollios , Vassilis J. Tsotras, Dimitrios Gunopulos , Alex Delis , Marios Hadjieleftheriou : Indexing Animated Objects Using Spatiotemporal Access Methods. IEEE Trans. Knowl. Data Eng. 13 (5): 758-777 (2001) Shu-Yao Chien , Vassilis J. Tsotras, Carlo Zaniolo : XML Document Versioning. SIGMOD Record 30 (3): 46-53 (2001) Dimitrios Gunopulos , George Kollios , Vassilis J. Tsotras, Carlotta Domeniconi : Approximating Multi-Dimensional Aggregate Range Queries over Real Attributes. SIGMOD Conference 2000 : 463-474 Shu-Yao Chien , Vassilis J. Tsotras, Carlo Zaniolo : Version Management of XML Documents. WebDB (Informal Proceedings) 2000 : 75-80 Shu-Yao Chien , Vassilis J. Tsotras, Carlo Zaniolo : Version Management of XML Documents. WebDB (Selected Papers) 2000 : 184-200 Yannis Manolopoulos , Yannis Theodoridis , Vassilis J. Tsotras: Advanced Database Indexing Kluwer 1999 Leana Golubchik , Vassilis J. Tsotras: MIS '99, 5th Workshop on Multimedia Information Systems, 21-23 October 1999, Indian Wells, California, Proceedings Multimedia Information Systems 1999 George Kollios , Dimitrios Gunopulos , Vassilis J. Tsotras: Indexing Animated Objects. Multimedia Information Systems 1999 : 28-33 George Kollios , Dimitrios Gunopulos , Vassilis J. Tsotras: On Indexing Mobile Objects. PODS 1999 : 261-272 George Kollios , Dimitrios Gunopulos , Vassilis J. Tsotras: Nearest Neighbor Queries in a Mobile Environment. Spatio-Temporal Database Management 1999 : 119-134 Betty Salzberg , Vassilis J. Tsotras: Comparison of Access Methods for Time-Evolving Data. ACM Comput. Surv. 31 (2): 158-221 (1999) Vassilis J. Tsotras, Vidyadhar Phalke , Anil Kumar , B. Gopinath : Supporting Temporal Views in a Management Information Base. J. Network Syst. Manage. 7 (2): (1999) Chi-Jiun Su , Leandros Tassiulas , Vassilis J. Tsotras: Broadcast scheduling for information distribution. Wireless Networks 5 (2): 137-147 (1999) Anil Kumar , Vassilis J. Tsotras, Christos Faloutsos : Designing Access Methods for Bitemporal Databases. IEEE Trans. Knowl. Data Eng. 10 (1): 1-20 (1998) Vassilis J. Tsotras, Christian S. Jensen , Richard T. Snodgrass : An Extensible Notation for Spatiotemporal Index Queries. SIGMOD Record 27 (1): 47-53 (1998) Vassilis J. Tsotras, Anil Kumar : Temporal Database Bibliography Update. SIGMOD Record 25 (1): 41-51 (1996) Anil Kumar , Vassilis J. Tsotras, Christos Faloutsos : Access Methods for Bi-Temporal Databases Temporal Databases 1995 : 235-254 Anil Kumar , Tony T. Lee , Vassilis J. Tsotras: A Load-Balanced Parallel Sorting Algorithm for Shared-Nothing Architectures. Distributed and Parallel Databases 3 (1): 37-68 (1995) Vassilis J. Tsotras, B. Gopinath , George W. Hart : Efficient Management of Time-Evolving Databases. IEEE Trans. Knowl. Data Eng. 7 (4): 591-608 (1995) Vassilis J. Tsotras, Nickolas Kangerlaris : The Snapshot Index: An I/O-optimal access method for timeslice queries. Inf. Syst. 20 (3): 237-260 (1995) Gad M. Landau , Jeanette P. Schmidt , Vassilis J. Tsotras: Historical Queries Along Multiple Lines of Time Evolution VLDB J. 4 (4): 703-726 (1995) Gad M. Landau , Jeanette P. Schmidt , Vassilis J. Tsotras: Efficient Support of Historical Queries for Multiple Lines of Evolution. ICDE 1993 : 319-326 Vassilis J. Tsotras, B. Gopinath : Optimal Versioning of Objects. ICDE 1992 : 358-365 Vassilis J. Tsotras, B. Gopinath : Efficient Algorithms for Managing the History of Evolving Databases. ICDT 1990 : 141-174 Vassilis J. Tsotras, B. Gopinath , George W. Hart : Optimally Managing the History of an Evolving Forest. 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