Efficient Algorithms for Managing the History of Evolving Databases. - Vassilis J. Tsotras; B. Gopinath (ICDT, 1990)

Optimally Managing the History of an Evolving Forest. - Vassilis J. Tsotras; B. Gopinath; George W. Hart (SIGAL International Symposium on Algorithms, 1990)

Using universe knowledge and arithmetic to get faster parallel algorithms. - Vassilis J. Tsotras; B. Gopinath; George W. Hart (SPDP, 1990)

Optimal Versioning of Objects. - Vassilis J. Tsotras; B. Gopinath (ICDE, 1992)

Efficient Support of Historical Queries for Multiple Lines of Evolution. - Gad M. Landau; Jeanette P. Schmidt; Vassilis J. Tsotras (ICDE, 1993)

Access Methods for Bi-Temporal Databases - Anil Kumar; Vassilis J. Tsotras; Christos Faloutsos (Temporal Databases, 1995)

A Load-Balanced Parallel Sorting Algorithm for Shared-Nothing Architectures. - Anil Kumar; Tony T. Lee; Vassilis J. Tsotras (Distributed Parallel Databases, 1995)

The Snapshot Index: An I/O-optimal access method for timeslice queries. - Vassilis J. Tsotras; Nickolas Kangerlaris (Inf. Syst., 1995)

Efficient Management of Time-Evolving Databases. - Vassilis J. Tsotras; B. Gopinath; George W. Hart (IEEE Trans. Knowl. Data Eng., 1995)

Historical Queries Along Multiple Lines of Time Evolution - Gad M. Landau; Jeanette P. Schmidt; Vassilis J. Tsotras (VLDB J., 1995)

Temporal Database Bibliography Update. - Vassilis J. Tsotras; Anil Kumar (SIGMOD Rec., 1996)

An Extensible Notation for Spatiotemporal Index Queries. - Vassilis J. Tsotras; Christian S. Jensen; Richard T. Snodgrass (SIGMOD Rec., 1998)

Designing Access Methods for Bitemporal Databases. - Anil Kumar; Vassilis J. Tsotras; Christos Faloutsos (IEEE Trans. Knowl. Data Eng., 1998)

Advanced Database Indexing - Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Kluwer, 1999)

Indexing Animated Objects. - George Kollios; Dimitrios Gunopulos; Vassilis J. Tsotras (Multimedia Information Systems, 1999)

On Indexing Mobile Objects. - George Kollios; Dimitrios Gunopulos; Vassilis J. Tsotras (PODS, 1999)

Nearest Neighbor Queries in a Mobile Environment. - George Kollios; Dimitrios Gunopulos; Vassilis J. Tsotras (Spatio-Temporal Database Management, 1999)

Comparison of Access Methods for Time-Evolving Data. - Betty Salzberg; Vassilis J. Tsotras (ACM Comput. Surv., 1999)

Supporting Temporal Views in a Management Information Base. - Vassilis J. Tsotras; Vidyadhar Phalke; Anil Kumar; B. Gopinath (J. Netw. Syst. Manag., 1999)

Broadcast scheduling for information distribution. - Chi-Jiun Su; Leandros Tassiulas; Vassilis J. Tsotras (Wirel. Networks, 1999)

Approximating Multi-Dimensional Aggregate Range Queries over Real Attributes. - Dimitrios Gunopulos; George Kollios; Vassilis J. Tsotras; Carlotta Domeniconi (SIGMOD Conference, 2000)

Version Management of XML Documents. - Shu-Yao Chien; Vassilis J. Tsotras; Carlo Zaniolo (WebDB (Informal Proceedings), 2000)

Improving Min/Max Aggregation over Spatial Objects. - Donghui Zhang; Vassilis J. Tsotras (ACM-GIS, 2001)

Efficient Computation of Temporal Aggregates with Range Predicates. - Donghui Zhang; Alexander Markowetz; Vassilis J. Tsotras; Dimitrios Gunopulos; Bernhard Seeger (PODS, 2001)

Copy-Based versus Edit-Based Version Management Schemes for Structured Documents. - Shu-Yao Chien; Vassilis J. Tsotras; Carlo Zaniolo (RIDE-DM, 2001)

Efficient Management of Multiversion Documents by Object Referencing. - Shu-Yao Chien; Vassilis J. Tsotras; Carlo Zaniolo (VLDB, 2001)

Storing and Querying Multiversion XML Documents using Durable Node Numbers. - Shu-Yao Chien; Vassilis J. Tsotras; Carlo Zaniolo; Donghui Zhang (WISE (1), 2001)

XML Document Versioning. - Shu-Yao Chien; Vassilis J. Tsotras; Carlo Zaniolo (SIGMOD Rec., 2001)

Introduction to the Special Section on the Fifth International Workshop on Multimedia Information Systems. - Leana Golubchik; Satish K. Tripathi; Vassilis J. Tsotras (IEEE Trans. Knowl. Data Eng., 2001)

Indexing Animated Objects Using Spatiotemporal Access Methods. - George Kollios; Vassilis J. Tsotras; Dimitrios Gunopulos; Alex Delis; Marios Hadjieleftheriou (IEEE Trans. Knowl. Data Eng., 2001)

Indexing Mobile Objects on the Plane. - Dimitris Papadopoulos; George Kollios; Dimitrios Gunopulos; Vassilis J. Tsotras (DEXA Workshops, 2002)

Efficient Complex Query Support for Multiversion XML Documents. - Shu-Yao Chien; Vassilis J. Tsotras; Carlo Zaniolo; Donghui Zhang (EDBT, 2002)

Efficient Indexing of Spatiotemporal Objects. - Marios Hadjieleftheriou; George Kollios; Vassilis J. Tsotras; Dimitrios Gunopulos (EDBT, 2002)

Temporal Aggregation over Data Streams Using Multiple Granularities. - Donghui Zhang; Dimitrios Gunopulos; Vassilis J. Tsotras; Bernhard Seeger (EDBT, 2002)

Efficient Temporal Join Processing Using Indices. - Donghui Zhang; Vassilis J. Tsotras; Bernhard Seeger (ICDE, 2002)

Efficient Aggregation over Objects with Extent. - Donghui Zhang; Vassilis J. Tsotras; Dimitrios Gunopulos (PODS, 2002)

Index Based Processing of Semi-Restrictive Temporal Joins. - Donghui Zhang; Vassilis J. Tsotras (TIME, 2002)

Efficient Structural Joins on Indexed XML Documents. - Shu-Yao Chien; Zografoula Vagena; Donghui Zhang; Vassilis J. Tsotras; Carlo Zaniolo (VLDB, 2002)

Indexing Mobile Objects Using Duality Transforms. - Dimitris Papadopoulos; George Kollios; Dimitrios Gunopulos; Vassilis J. Tsotras (IEEE Data Eng. Bull., 2002)

Hashing Methods for Temporal Data. - George Kollios; Vassilis J. Tsotras (IEEE Trans. Knowl. Data Eng., 2002)

Efficient schemes for managing multiversionXML documents. - Shu-Yao Chien; Vassilis J. Tsotras; Carlo Zaniolo (VLDB J., 2002)

On-Line Discovery of Dense Areas in Spatio-temporal Databases. - Marios Hadjieleftheriou; George Kollios; Dimitrios Gunopulos; Vassilis J. Tsotras (SSTD, 2003)

Performance Evaluation of Spatio-temporal Selectivity Estimation Techniques. - Marios Hadjieleftheriou; George Kollios; Vassilis J. Tsotras (SSDBM, 2003)

Path-expression Queries over Multiversion XML Documents. - Zografoula Vagena; Vassilis J. Tsotras (WebDB, 2003)

Temporal and spatio-temporal aggregations over data streams using multiple time granularities. - Donghui Zhang; Dimitrios Gunopulos; Vassilis J. Tsotras; Bernhard Seeger (Inf. Syst., 2003)

Knowledge Management Over Time-Varying Geospatial Datasets. - Peggy Agouris; Anthony Stefanidis; Kate Beard; Mark Gahegan; Vassilis J. Tsotras; Dimitrios Gunopulos (DG.O, 2004)

Efficient Processing of XML Containment Queries Using Partition-Based Schemes. - Zografoula Vagena; Mirella Moura Moro; Vassilis J. Tsotras (IDEAS, 2004)

Supporting Branched Versions on XML Documents. - Zografoula Vagena; Mirella Moura Moro; Vassilis J. Tsotras (RIDE, 2004)

SaIL: A Library for Efficient Application Integration of Spatial Indices. - Marios Hadjieleftheriou; Erik G. Hoel; Vassilis J. Tsotras (SSDBM, 2004)

Spatio-Temporal Data Services in a Shared-Nothing Environment. - Marios Hadjieleftheriou; Vassil Kriakov; Yangui Tao; George Kollios; Alex Delis; Vassilis J. Tsotras (SSDBM, 2004)

Twig Query Processing over Graph-Structured XML Data. - Zografoula Vagena; Mirella Moura Moro; Vassilis J. Tsotras (WebDB, 2004)

The threshold join algorithm for top-k queries in distributed sensor networks. - Demetrios Zeinalipour-Yazti; Zografoula Vagena; Dimitrios Gunopulos; Vana Kalogeraki; Vassilis J. Tsotras; Michail Vlachos; Nick Koudas; Divesh Srivastava (DMSN, 2005)

Time relaxed spatiotemporal trajectory joins. - Petko Bakalov; Marios Hadjieleftheriou; Vassilis J. Tsotras (GIS, 2005)

Efficient trajectory joins using symbolic representations. - Petko Bakalov; Marios Hadjieleftheriou; Eamonn J. Keogh; Vassilis J. Tsotras (Mobile Data Management, 2005)

Complex Spatio-Temporal Pattern Queries. - Marios Hadjieleftheriou; George Kollios; Petko Bakalov; Vassilis J. Tsotras (VLDB, 2005)

Tree-Pattern Queries on a Lightweight XML Processor. - Mirella Moura Moro; Zografoula Vagena; Vassilis J. Tsotras (VLDB, 2005)

Indexing Schemes for Efficient Aggregate Computation over Structural Joins. - Priya Mandawat; Vassilis J. Tsotras (WebDB, 2005)

Answering order-based queries over XML data. - Zografoula Vagena; Nick Koudas; Divesh Srivastava; Vassilis J. Tsotras (WWW (Special interest tracks and posters), 2005)

Efficient Handling of Positional Predicates Within XML Query Processing. - Zografoula Vagena; Nick Koudas; Divesh Srivastava; Vassilis J. Tsotras (XSym, 2005)

SaIL: A Spatial Index Library for Efficient Application Integration. - Marios Hadjieleftheriou; Erik G. Hoel; Vassilis J. Tsotras (GeoInformatica, 2005)

Selectivity estimators for multidimensional range queries over real attributes. - Dimitrios Gunopulos; George Kollios; Vassilis J. Tsotras; Carlotta Domeniconi (VLDB J., 2005)

Indexing mobile objects using dual transformations. - George Kollios; Dimitris Papadopoulos; Dimitrios Gunopulos; Vassilis J. Tsotras (VLDB J., 2005)

Optimizing spatial Min/Max aggregations. - Donghui Zhang; Vassilis J. Tsotras (VLDB J., 2005)

Continuous Spatiotemporal Trajectory Joins. - Petko Bakalov; Vassilis J. Tsotras (GSN, 2006)

Evaluating structural summaries as access methods for XML. - Mirella Moura Moro; Zografoula Vagena; Vassilis J. Tsotras (WWW, 2006)

Supporting complex queries on multiversion XML documents. - Shu-Yao Chien; Vassilis J. Tsotras; Carlo Zaniolo; Donghui Zhang (ACM Trans. Internet Techn., 2006)

Indexing spatiotemporal archives. - Marios Hadjieleftheriou; George Kollios; Vassilis J. Tsotras; Dimitrios Gunopulos (VLDB J., 2006)

TS2-tree - an efficient similarity based organization for trajectory data. - Petko Bakalov; Eamonn J. Keogh; Vassilis J. Tsotras (GIS, 2007)

RoXSum: Leveraging Data Aggregation and Batch Processing for XML Routing. - Zografoula Vagena; Mirella Moura Moro; Vassilis J. Tsotras (ICDE, 2007)

Recent Advances on Querying and Managing Trajectories. - Vassilis J. Tsotras (SSTDi (slides), 2007)

Early Profile Pruning on XML-aware Publish/Subscribe Systems. - Mirella Moura Moro; Petko Bakalov; Vassilis J. Tsotras (VLDB, 2007)

Value-Aware RoXSum: Effective Message Aggregation for XML-Aware Information Dissemination. - Zografoula Vagena; Mirella Moura Moro; Vassilis J. Tsotras (WebDB, 2007)

Editing and versioning dynamic network models. - Petko Bakalov; Erik G. Hoel; Wee-Liang Heng; Vassilis J. Tsotras (GIS, 2008)

Maintaining Connectivity in Dynamic Multimodal Network Models. - Petko Bakalov; Erik G. Hoel; Wee-Liang Heng; Vassilis J. Tsotras (ICDE, 2008)

A Generic Framework for Continuous Motion Pattern Query Evaluation. - Petko Bakalov; Vassilis J. Tsotras (ICDE, 2008)

Letter from the Special Issue Editors. - Michael J. Carey 001; Vassilis J. Tsotras (IEEE Data Eng. Bull., 2008)

XML Structural Summaries. - Mirella Moura Moro; Zografoula Vagena; Vassilis J. Tsotras (Proc. VLDB Endow., 2008)

On computing temporal aggregates with range predicates. - Donghui Zhang; Alexander Markowetz; Vassilis J. Tsotras; Dimitrios Gunopulos; Bernhard Seeger (ACM Trans. Database Syst., 2008)

Index Structures, Extensible. - Marios Hadjieleftheriou; Erik G. Hoel; Vassilis J. Tsotras (Encyclopedia of GIS, 2008)

Indexing Spatio-temporal Archives. - Marios Hadjieleftheriou; George Kollios; Vassilis J. Tsotras; Dimitrios Gunopulos (Encyclopedia of GIS, 2008)

R-Trees - A Dynamic Index Structure for Spatial Searching. - Marios Hadjieleftheriou; Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of GIS, 2008)

Mobile Object Indexing. - George Kollios; Vassilis J. Tsotras; Dimitrios Gunopulos (Encyclopedia of GIS, 2008)

Boosting XML filtering through a scalable FPGA-based architecture. - Abhishek Mitra; Marcos R. Vieira; Petko Bakalov; Vassilis J. Tsotras; Walid A. Najjar (CIDR, 2009)

On-line discovery of flock patterns in spatio-temporal data. - Marcos R. Vieira; Petko Bakalov; Vassilis J. Tsotras (GIS, 2009)

Versioning of Network Models in a Multiuser Environment. - Petko Bakalov; Erik G. Hoel; Sudhakar Menon; Vassilis J. Tsotras (SSTD, 2009)

Efficient and Scalable Sequence-Based XML Filtering. - Mariam Salloum; Vassilis J. Tsotras (WebDB, 2009)

Experimental Evaluation of Query Processing Techniques over Multiversion XML Documents. - Adam Woss; Vassilis J. Tsotras (WebDB, 2009)

Finding the K highest-ranked answers in a distributed network. - Demetrios Zeinalipour-Yazti; Zografoula Vagena; Vana Kalogeraki; Dimitrios Gunopulos; Vassilis J. Tsotras; Michail Vlachos; Nick Koudas; Divesh Srivastava (Comput. Networks, 2009)

Boosting XML Filtering with a Scalable FPGA-based Architecture - Abhishek Mitra; Marcos R. Vieira; Petko Bakalov; Walid A. Najjar; Vassilis J. Tsotras (CoRR, 2009)

Letter from the Special Issue Editor. - Marios Hadjieleftheriou; Vassilis J. Tsotras (IEEE Data Eng. Bull., 2009)

On continuously monitoring the top-k moving objects with relational group and score functions. - Jian Wen; Vassilis J. Tsotras; Donghui Zhang (ACM SIGSPATIAL Special, 2009)

Indexed Sequential Access Method. - Alex Delis; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Primary Index. - Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Secondary Index. - Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Spatial Indexing Techniques. - Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Tree-based Indexing. - Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Bi-Temporal Indexing. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Dense Index. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Sparse Index. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Transaction-Time Indexing. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Valid-Time Indexing. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Hash-based Indexing. - Mirella M. Moro; Donghui Zhang; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Grid File (and Family). - Apostolos N. Papadopoulos; Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

B+-Tree. - Donghui Zhang; Kenneth Baclawski; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Extendible Hashing. - Donghui Zhang; Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Linear Hashing. - Donghui Zhang; Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

I/O Model of Computation. - Donghui Zhang; Vassilis J. Tsotras (Encyclopedia of Database Systems, 2009)

Temporal Top-k Search in Social Tagging Sites Using Multiple Social Networks. - Wenyu Huo; Vassilis J. Tsotras (DASFAA (1), 2010)

Querying trajectories using flexible patterns. - Marcos R. Vieira; Petko Bakalov; Vassilis J. Tsotras (EDBT, 2010)

On continuous monitoring top-k unsafe moving objects. - Jian Wen; Vassilis J. Tsotras (GIS, 2010)

Accelerating XML Query Matching through Custom Stack Generation on FPGAs. - Roger Moussalli; Mariam Salloum; Walid A. Najjar; Vassilis J. Tsotras (HiPEAC, 2010)

Querying Spatio-temporal Patterns in Mobile Phone-Call Databases. - Marcos R. Vieira; Enrique Frías-Martínez; Petko Bakalov; Vanessa Frías-Martínez; Vassilis J. Tsotras (Mobile Data Management, 2010)

Graph Indexing of Road Networks for Shortest Path Queries with Label Restrictions. - Michael N. Rice; Vassilis J. Tsotras (Proc. VLDB Endow., 2010)

Massively parallel XML twig filtering using dynamic programming on FPGAs. - Roger Moussalli; Mariam Salloum; Walid A. Najjar; Vassilis J. Tsotras (ICDE, 2011)

On query result diversification. - Marcos R. Vieira; Humberto Luiz Razente; Maria Camila Nardini Barioni; Marios Hadjieleftheriou; Divesh Srivastava; Caetano Traina Jr.; Vassilis J. Tsotras (ICDE, 2011)

Complex motion pattern queries for trajectories. - Marcos R. Vieira; Vassilis J. Tsotras (ICDE Workshops, 2011)

Finding Regions of Interest from Trajectory Data. - Muhammad Reaz Uddin; Chinya V. Ravishankar; Vassilis J. Tsotras (Mobile Data Management (1), 2011)

A System for Discovering Regions of Interest from Trajectory Data. - Muhammad Reaz Uddin; Chinya V. Ravishankar; Vassilis J. Tsotras (SSTD, 2011)

FlexTrack: A System for Querying Flexible Patterns in Trajectory Databases. - Marcos R. Vieira; Petko Bakalov; Vassilis J. Tsotras (SSTD, 2011)

Efficient XML Path Filtering Using GPUs. - Roger Moussalli; Robert J. Halstead; Mariam Salloum; Walid A. Najjar; Vassilis J. Tsotras (ADMS@VLDB, 2011)

ASTERIX: towards a scalable, semistructured data platform for evolving-world models. - Alexander Behm; Vinayak R. Borkar; Michael J. Carey 001; Raman Grover; Chen Li 001; Nicola Onose; Rares Vernica; Alin Deutsch; Yannis Papakonstantinou; Vassilis J. Tsotras (Distributed Parallel Databases, 2011)

Editing and versioning for high performance network models in a multiuser environment. - Petko Bakalov; Erik G. Hoel; Wee-Liang Heng; Sudhakar Menon; Vassilis J. Tsotras (GeoInformatica, 2011)

DivDB: A System for Diversifying Query Results. - Marcos R. Vieira; Humberto Luiz Razente; Maria Camila Nardini Barioni; Marios Hadjieleftheriou; Divesh Srivastava; Caetano Traina Jr.; Vassilis J. Tsotras (Proc. VLDB Endow., 2011)

Diversifying query results on semi-structured data. - Mahbub Hasan; Abdullah Mueen; Vassilis J. Tsotras; Eamonn J. Keogh (CIKM, 2012)

Querying Transaction-Time Databases under Branched Schema Evolution. - Wenyu Huo; Vassilis J. Tsotras (DEXA (1), 2012)

A Comparison of Top-k Temporal Keyword Querying over Versioned Text Collections. - Wenyu Huo; Vassilis J. Tsotras (DEXA (2), 2012)

Online Identification of Dwell Regions for Moving Objects. - Muhammad Reaz Uddin; Chinya V. Ravishankar; Vassilis J. Tsotras (MDM, 2012)

A Spatial Caching Framework for Map Operations in Geographical Information Systems. - Marcos R. Vieira; Petko Bakalov; Erik G. Hoel; Vassilis J. Tsotras (MDM, 2012)

Bidirectional A* Search with Additive Approximation Bounds. - Michael N. Rice; Vassilis J. Tsotras (SOCS, 2012)

Exact Graph Search Algorithms for Generalized Traveling Salesman Path Problems. - Michael N. Rice; Vassilis J. Tsotras (SEA, 2012)

Route planning with flexible edge restrictions. - Robert Geisberger; Michael N. Rice; Peter Sanders 001; Vassilis J. Tsotras (ACM J. Exp. Algorithmics, 2012)

On The Spatiotemporal Burstiness of Terms. - Theodoros Lappas; Marcos R. Vieira; Dimitrios Gunopulos; Vassilis J. Tsotras (Proc. VLDB Endow., 2012)

Revisiting aggregation techniques for big data. - Vassilis J. Tsotras (DOLAP, 2013)

Parameterized algorithms for generalized traveling salesman problems in road networks. - Michael N. Rice; Vassilis J. Tsotras (SIGSPATIAL/GIS, 2013)

Engineering Generalized Shortest Path queries. - Michael N. Rice; Vassilis J. Tsotras (ICDE, 2013)

STEM: a spatio-temporal miner for bursty activity. - Theodoros Lappas; Marcos R. Vieira; Dimitrios Gunopulos; Vassilis J. Tsotras (SIGMOD Conference, 2013)

Stream-Mode FPGA Acceleration of Complex Pattern Trajectory Querying. - Roger Moussalli; Marcos R. Vieira; Walid A. Najjar; Vassilis J. Tsotras (SSTD, 2013)

High-Performance XML Twig Filtering using GPUs. - Ildar Absalyamov; Roger Moussalli; Vassilis J. Tsotras; Walid A. Najjar (ADMS@VLDB, 2013)

Revisiting Aggregation for Data Intensive Applications: A Performance Study. - Jian Wen; Vinayak R. Borkar; Michael J. Carey 001; Vassilis J. Tsotras (CoRR, 2013)

Online Ordering of Overlapping Data Sources. - Mariam Salloum; Xin Luna Dong; Divesh Srivastava; Vassilis J. Tsotras (Proc. VLDB Endow., 2013)

Spatio-Temporal Databases - Complex Motion Pattern Queries. - Marcos R. Vieira; Vassilis J. Tsotras (Springer, 2013)

Distributed Diversification of Large Datasets. - Mahbub Hasan; Abdullah Mueen; Vassilis J. Tsotras (IC2E, 2014)

User effort minimization through adaptive diversification. - Mahbub Hasan; Abhijith Kashyap; Vagelis Hristidis; Vassilis J. Tsotras (KDD, 2014)

Efficient temporal shortest path queries on evolving social graphs. - Wenyu Huo; Vassilis J. Tsotras (SSDBM, 2014)

AsterixDB: A Scalable, Open Source BDMS. - Sattam Alsubaiee; Yasser Altowim; Hotham Altwaijry; Alexander Behm; Vinayak R. Borkar; Yingyi Bu; Michael J. Carey 001; Inci Cetindil; Madhusudan Cheelangi; Khurram Faraaz; Eugenia Gabrielova; Raman Grover; et al. (Proc. VLDB Endow., 2014)

A study on parallelizing XML path filtering using accelerators. - Roger Moussalli; Mariam Salloum; Robert J. Halstead; Walid A. Najjar; Vassilis J. Tsotras (ACM Trans. Embed. Comput. Syst., 2014)

A scalable parallel XQuery processor. - E. Preston Carman Jr.; Till Westmann; Vinayak R. Borkar; Michael J. Carey 001; Vassilis J. Tsotras (IEEE BigData, 2015)

FPGA-based Multithreading for In-Memory Hash Joins. - Robert J. Halstead; Ildar Absalyamov; Walid A. Najjar; Vassilis J. Tsotras (CIDR, 2015)

Algebricks: a data model-agnostic compiler backend for big data languages. - Vinayak R. Borkar; Yingyi Bu; E. Preston Carman Jr.; Nicola Onose; Till Westmann; Pouria Pirzadeh; Michael J. Carey 001; Vassilis J. Tsotras (SoCC, 2015)

RICC: Fast Reachability Query Processing on Large Spatiotemporal Datasets. - Elena Vladislavivna Strzheletska; Vassilis J. Tsotras (SSTD, 2015)

Apache VXQuery: A Scalable XQuery Implementation. - E. Preston Carman Jr.; Till Westmann; Vinayak R. Borkar; Michael J. Carey 001; Vassilis J. Tsotras (CoRR, 2015)

High performance FPGA and GPU complex pattern matching over spatio-temporal streams. - Roger Moussalli; Ildar Absalyamov; Marcos R. Vieira; Walid A. Najjar; Vassilis J. Tsotras (GeoInformatica, 2015)

FPGA-accelerated group-by aggregation using synchronizing caches. - Ildar Absalyamov; Prerna Budhkar; Skyler Windh; Robert J. Halstead; Walid A. Najjar; Vassilis J. Tsotras (DaMoN, 2016)

Breaking BAD: a data serving vision for big active data. - Michael J. Carey 001; Steven Jacobs; Vassilis J. Tsotras (DEBS, 2016)

OSNI: Searching for Needles in a Haystack of Social Network Data. - Shiwen Cheng; James Fang; Vagelis Hristidis; Harsha V. Madhyastha; Niluthpol Chowdhury Mithun; Dorian Jean Perkins; Amit K. Roy-Chowdhury; Moloud Shahbazi; Vassilis J. Tsotras (EDBT, 2016)

DiVA: Using Application-Specific Policies to 'Dive' into Vector Approximations. - Konstantinos Tsakalozos; Spiros Evangelatos; Fotis Psallidas; Marcos R. Vieira; Vassilis J. Tsotras; Alex Delis (Comput. J., 2016)

Assembly Queries: Planning and Discovering Assemblies of Moving Objects Using Partial Information. - Reaz Uddin 001; Michael N. Rice; Chinya V. Ravishankar; Vassilis J. Tsotras (SIGSPATIAL/GIS, 2017)

Efficient Processing of Reachability Queries with Meetings. - Elena Vladislavivna Strzheletska; Vassilis J. Tsotras (SIGSPATIAL/GIS, 2017)

Efficient Computation of Top-k Frequent Terms over Spatio-temporal Ranges. - Pritom Ahmed; Mahbub Hasan; Abhijith Kashyap; Vagelis Hristidis; Vassilis J. Tsotras (SIGMOD Conference, 2017)

A BAD Demonstration: Towards Big Active Data. - Steven Jacobs; Md. Yusuf Sarwar Uddin; Michael J. Carey 001; Vagelis Hristidis; Vassilis J. Tsotras; Nalini Venkatasubramanian; Yao Wu; Syed Safir; Purvi Kaul; Xikui Wang; Mohiuddin Abdul Qader; Yawei Li (Proc. VLDB Endow., 2017)

Index Structures, Extensible. - Marios Hadjieleftheriou; Erik G. Hoel; Vassilis J. Tsotras (Encyclopedia of GIS, 2017)

Indexing Spatiotemporal Archives. - Marios Hadjieleftheriou; George Kollios; Vassilis J. Tsotras; Dimitrios Gunopulos (Encyclopedia of GIS, 2017)

R-Trees: A Dynamic Index Structure for Spatial Searching. - Marios Hadjieleftheriou; Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of GIS, 2017)

Mobile Object Indexing. - George Kollios; Vassilis J. Tsotras; Dimitrios Gunopulos (Encyclopedia of GIS, 2017)

Massively parallel skyline computation for processing-in-memory architectures. - Vasileios Zois; Divya Gupta; Vassilis J. Tsotras; Walid A. Najjar; Jean-François Roy (PACT, 2018)

A Parallel and Scalable Processor for JSON Data. - Christina Pavlopoulou; E. Preston Carman Jr.; Till Westmann; Michael J. Carey 001; Vassilis J. Tsotras (EDBT, 2018)

Indexing moving object trajectories with hilbert curves. - Reaz Uddin 001; Chinya V. Ravishankar; Vassilis J. Tsotras (SIGSPATIAL/GIS, 2018)

Lightweight Cardinality Estimation in LSM-based Systems. - Ildar Absalyamov; Michael J. Carey 001; Vassilis J. Tsotras (SIGMOD Conference, 2018)

Indexed Sequential Access Method. - Alex Delis; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Primary Index. - Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Secondary Index. - Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Spatial Indexing Techniques. - Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Tree-Based Indexing. - Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Bitemporal Indexing. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Dense Index. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Sparse Index. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Transaction-Time Indexing. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Valid-Time Indexing. - Mirella M. Moro; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Hash-Based Indexing. - Mirella M. Moro; Donghui Zhang; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Grid File (and Family). - Apostolos N. Papadopoulos; Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

B+-Tree. - Donghui Zhang; Kenneth Paul Baclawski; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Extendible Hashing. - Donghui Zhang; Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

Linear Hashing. - Donghui Zhang; Yannis Manolopoulos; Yannis Theodoridis; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

I/O Model of Computation. - Donghui Zhang; Vassilis J. Tsotras (Encyclopedia of Database Systems (2nd ed.), 2018)

GPU Accelerated Top-K Selection With Efficient Early Stopping. - Vasileios Zois; Vassilis J. Tsotras; Walid A. Najjar (ADMS@VLDB, 2019)

Experimental Evaluation of Bounded-Depth LSM Merge Policies. - Qizhong Mao; Steven Jacobs; Waleed Amjad; Vagelis Hristidis; Vassilis J. Tsotras; Neal E. Young (IEEE BigData, 2019)

Geolocating Tweets in any Language at any Location. - Mike Izbicki; Vagelis Papalexakis; Vassilis J. Tsotras (CIKM, 2019)

Exploiting the Earth's Spherical Geometry to Geolocate Images. - Mike Izbicki; Evangelos E. Papalexakis; Vassilis J. Tsotras (ECML/PKDD (2), 2019)

Efficient Main-Memory Top-K Selection For Multicore Architectures. - Vasileios Zois; Vassilis J. Tsotras; Walid A. Najjar (Proc. VLDB Endow., 2019)

Accelerating In-Memory Database Selections Using Latency Masking Hardware Threads. - Prerna Budhkar; Ildar Absalyamov; Vasileios Zois; Skyler Windh; Walid A. Najjar; Vassilis J. Tsotras (ACM Trans. Archit. Code Optim., 2019)

Bridging BAD Islands: Declarative Data Sharing at Scale. - Xikui Wang; Michael J. Carey 001; Vassilis J. Tsotras (IEEE BigData, 2020)

High-Performance Parallel Radix Sort on FPGA. - Bashar Romanous; Mohammadreza Rezvani; Junjie Huang; Daniel Wong 001; Evangelos E. Papalexakis; Vassilis J. Tsotras; Walid A. Najjar (FCCM, 2020)

Scalable Spatial GroupBy Aggregations Over Complex Polygons. - Laila Abdelhafeez; Amr Magdy 001; Vassilis J. Tsotras (SIGSPATIAL/GIS, 2020)

Being Happy with the Least: Achieving α-happiness with Minimum Number of Tuples. - Min Xie; Raymond Chi-Wing Wong; Peng Peng 002; Vassilis J. Tsotras (ICDE, 2020)

BAD to the bone: Big Active Data at its core. - Steven Jacobs; Xikui Wang; Michael J. Carey 001; Vassilis J. Tsotras; Md. Yusuf Sarwar Uddin (VLDB J., 2020)

Building an end-to-end BAD application. - Shahrzad Haji Amin Shirazi; Michael J. Carey 001; Vassilis J. Tsotras (DEBS, 2021)

A brief introduction to geospatial big data analytics with apache AsterixDB. - Akil Sevim; Mehnaz Tabassum Mahin; Tin Vu; Ian Maxon; Ahmed Eldawy; Michael J. Carey 001; Vassilis J. Tsotras (SpatialAPI@SIGSPATIAL, 2021)

Reachability Queries with Transfer Decay. - Elena Vladislavivna Strzheletska; Vassilis J. Tsotras (MDM, 2021)

Developing an Interdisciplinary Data Science Program. - Mariam Salloum; Daniel R. Jeske; Wenxiu Ma; Vagelis Papalexakis; Christian R. Shelton; Vassilis J. Tsotras; Shuheng Zhou 002 (SIGCSE, 2021)

Reachability and Top-k Reachability Queries with Transfer Decay. - Elena Vladislavivna Strzheletska; Vassilis J. Tsotras (CoRR, 2021)

Incremental Partitioning for Efficient Spatial Data Analytics. - Tin Vu; Ahmed Eldawy; Vagelis Hristidis; Vassilis J. Tsotras (Proc. VLDB Endow., 2021)

Comparison and evaluation of state-of-the-art LSM merge policies. - Qizhong Mao; Steven Jacobs; Waleed Amjad; Vagelis Hristidis; Vassilis J. Tsotras; Neal E. Young (VLDB J., 2021)

Efficient local locking for massively multithreaded in-memory hash-based operators. - Bashar Romanous; Skyler Windh; Ildar Absalyamov; Prerna Budhkar; Robert J. Halstead; Walid A. Najjar; Vassilis J. Tsotras (VLDB J., 2021)

Subscribing to big data at scale. - Xikui Wang; Michael J. Carey 001; Vassilis J. Tsotras (Distributed Parallel Databases, 2022)

DDCEL: Efficient Distributed Doubly Connected Edge List for Large Spatial Networks. - Laila Abdelhafeez; Amr Magdy 001; Vassilis J. Tsotras (MDM, 2023)

Scalable Overlay Operations over DCEL Polygon Layers. - Andrés Calderón Romero; Vassilis J. Tsotras; Amr Magdy 001 (SSTD, 2023)

Revisiting Runtime Dynamic Optimization for Join Queries in Big Data Management Systems. - Christina Pavlopoulou; Michael J. Carey 001; Vassilis J. Tsotras (SIGMOD Rec., 2023)

Reverse spatial top-k keyword queries. - Pritom Ahmed; Ahmed Eldawy; Vagelis Hristidis; Vassilis J. Tsotras (VLDB J., 2023)

Dwell Regions: Generalized Stay Regions for Streaming and Archival Trajectory Data. - Reaz Uddin 001; Mehnaz Tabassum Mahin; Payas Rajan; Chinya V. Ravishankar; Vassilis J. Tsotras (ACM Trans. Spatial Algorithms Syst., 2023)

SGPAC: generalized scalable spatial GroupBy aggregations over complex polygons. - Laila Abdelhafeez; Amr Magdy 001; Vassilis J. Tsotras (GeoInformatica, 2023)

Automating Data Science Pipelines with Tensor Completion. - Shaan Pakala; Bryce Graw; Dawon Ahn; Tam Dinh; Mehnaz Tabassum Mahin; Vassilis J. Tsotras; Jia Chen 002; Evangelos E. Papalexakis (IEEE Big Data, 2024)

FUDJ: Flexible User-Defined Distributed Joins. - Akil Sevim; Ahmed Eldawy; E. Preston Carman; Michael J. Carey 001; Vassilis J. Tsotras (ICDE, 2024)

EBV: Electronic Bee-Veterinarian for Principled Mining and Forecasting of Honeybee Time Series. - Shamima Hossain; Christos Faloutsos; Boris Baer; Hyoseung Kim 001; Vassilis J. Tsotras (SDM, 2024)

A new window Clause for SQL++. - James Fang; Dmitry Lychagin; Michael J. Carey 001; Vassilis J. Tsotras (VLDB J., 2024)

Pyneapple-G: Scalable Spatial Grouping Queries. - Laila Abdelhafeez; Andres Calderon; Amr Magdy 001; Vassilis J. Tsotras (Proc. VLDB Endow., 2024)

Optimizing Big Active Data Management Systems. - Shahrzad Haji Amin Shirazi; Xikui Wang; Michael J. Carey 001; Vassilis J. Tsotras (DOLAP, 2025)

Principled Mining, Forecasting, and Monitoring of Honeybee Time Series with EBV+. - Shamima Hossain; Christos Faloutsos; Boris Baer; Hyoseung Kim 001; Vassilis J. Tsotras (ACM Trans. Knowl. Discov. Data, 2025)

On scalable DCEL overlay operations. - Andrés Calderón Romero; Laila Abdelhafeez; Goce Trajcevski; Amr Magdy 001; Vassilis J. Tsotras (GeoInformatica, 2025)