Vassilis J. Tsotras

According to our database, Vassilis J. Tsotras authored at least 215 papers between 1990 and 2024.

Collaborative distances:

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2024

Pyneapple-G: Scalable Spatial Grouping Queries.

Laila Abdelhafeez, Andres Calderon, Amr Magdy, Vassilis J. Tsotras

Proc. VLDB Endow., August, 2024

A new window Clause for SQL++.

James Fang, Dmitry Lychagin, Michael J. Carey, Vassilis J. Tsotras

VLDB J., May, 2024

Automating Data Science Pipelines with Tensor Completion.

Shaan Pakala, Bryce Graw, Dawon Ahn, Tam Dinh, Mehnaz Tabassum Mahin, Vassilis J. Tsotras, Jia Chen, Evangelos E. Papalexakis

CoRR, 2024

EBV: Electronic Bee-Veterinarian for Principled Mining and Forecasting of Honeybee Time Series.

Shamima Hossain, Christos Faloutsos, Boris Baer, Hyoseung Kim, Vassilis J. Tsotras

Proceedings of the 2024 SIAM International Conference on Data Mining, 2024

FUDJ: Flexible User-Defined Distributed Joins.

Akil Sevim, Ahmed Eldawy, E. Preston Carman, Michael J. Carey, Vassilis J. Tsotras

Proceedings of the 40th IEEE International Conference on Data Engineering, 2024

2023

SGPAC: generalized scalable spatial GroupBy aggregations over complex polygons.

Laila Abdelhafeez, Amr Magdy, Vassilis J. Tsotras

GeoInformatica, October, 2023

Dwell Regions: Generalized Stay Regions for Streaming and Archival Trajectory Data.

Reaz Uddin, Mehnaz Tabassum Mahin, Payas Rajan, Chinya V. Ravishankar, Vassilis J. Tsotras

ACM Trans. Spatial Algorithms Syst., June, 2023

Reverse spatial top-k keyword queries.

Pritom Ahmed, Ahmed Eldawy, Vagelis Hristidis, Vassilis J. Tsotras

VLDB J., May, 2023

Revisiting Runtime Dynamic Optimization for Join Queries in Big Data Management Systems.

Christina Pavlopoulou, Michael J. Carey, Vassilis J. Tsotras

SIGMOD Rec., 2023

Scalable Overlay Operations over DCEL Polygon Layers.

Andrés Calderón Romero, Vassilis J. Tsotras, Amr Magdy

Proceedings of the 18th International Symposium on Spatial and Temporal Data, 2023

DDCEL: Efficient Distributed Doubly Connected Edge List for Large Spatial Networks.

Laila Abdelhafeez, Amr Magdy, Vassilis J. Tsotras

Proceedings of the 24th IEEE International Conference on Mobile Data Management, 2023

2022

Subscribing to big data at scale.

Xikui Wang, Michael J. Carey, Vassilis J. Tsotras

Distributed Parallel Databases, 2022

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

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

Incremental Partitioning for Efficient Spatial Data Analytics.

Tin Vu, Ahmed Eldawy, Vagelis Hristidis, Vassilis J. Tsotras

Proc. VLDB Endow., 2021

Reachability and Top-k Reachability Queries with Transfer Decay.

Elena Vladislavivna Strzheletska, Vassilis J. Tsotras

CoRR, 2021

Developing an Interdisciplinary Data Science Program.

Mariam Salloum, Daniel R. Jeske, Wenxiu Ma, Vagelis Papalexakis, Christian R. Shelton, Vassilis J. Tsotras, Shuheng Zhou

Proceedings of the SIGCSE '21: The 52nd ACM Technical Symposium on Computer Science Education, 2021

Reachability Queries with Transfer Decay.

Elena Vladislavivna Strzheletska, Vassilis J. Tsotras

Proceedings of the 22nd IEEE International Conference on Mobile Data Management, 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, Vassilis J. Tsotras

Proceedings of the SpatialAPI@SIGSPATIAL 2021: Proceedings of the 3rd ACM SIGSPATIAL International Workshop on APIs and Libraries for Geospatial Data Science, 2021

Building an end-to-end BAD application.

Shahrzad Haji Amin Shirazi, Michael J. Carey, Vassilis J. Tsotras

Proceedings of the 15th ACM International Conference on Distributed and Event-based Systems, 2021

2020

BAD to the bone: Big Active Data at its core.

Steven Jacobs, Xikui Wang, Michael J. Carey, Vassilis J. Tsotras, Md. Yusuf Sarwar Uddin

VLDB J., 2020

Being Happy with the Least: Achieving α-happiness with Minimum Number of Tuples.

Min Xie, Raymond Chi-Wing Wong, Peng Peng, Vassilis J. Tsotras

Proceedings of the 36th IEEE International Conference on Data Engineering, 2020

Scalable Spatial GroupBy Aggregations Over Complex Polygons.

Laila Abdelhafeez, Amr Magdy, Vassilis J. Tsotras

Proceedings of the SIGSPATIAL '20: 28th International Conference on Advances in Geographic Information Systems, 2020

High-Performance Parallel Radix Sort on FPGA.

Bashar Romanous, Mohammadreza Rezvani, Junjie Huang, Daniel Wong, Evangelos E. Papalexakis, Vassilis J. Tsotras, Walid A. Najjar

Proceedings of the 28th IEEE Annual International Symposium on Field-Programmable Custom Computing Machines, 2020

Bridging BAD Islands: Declarative Data Sharing at Scale.

Xikui Wang, Michael J. Carey, Vassilis J. Tsotras

Proceedings of the 2020 IEEE International Conference on Big Data (IEEE BigData 2020), 2020

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

Efficient Main-Memory Top-K Selection For Multicore Architectures.

Vasileios Zois, Vassilis J. Tsotras, Walid A. Najjar

Proc. VLDB Endow., 2019

Exploiting the Earth's Spherical Geometry to Geolocate Images.

Mike Izbicki, Evangelos E. Papalexakis, Vassilis J. Tsotras

Proceedings of the Machine Learning and Knowledge Discovery in Databases, 2019

Geolocating Tweets in any Language at any Location.

Mike Izbicki, Vagelis Papalexakis, Vassilis J. Tsotras

Proceedings of the 28th ACM International Conference on Information and Knowledge Management, 2019

Experimental Evaluation of Bounded-Depth LSM Merge Policies.

Qizhong Mao, Steven Jacobs, Waleed Amjad, Vagelis Hristidis, Vassilis J. Tsotras, Neal E. Young

Proceedings of the 2019 IEEE International Conference on Big Data (IEEE BigData), 2019

GPU Accelerated Top-K Selection With Efficient Early Stopping.

Vasileios Zois, Vassilis J. Tsotras, Walid A. Najjar

Proceedings of the 10th International Workshop on Accelerating Analytics and Data Management Systems Using Modern Processor and Storage Architectures, 2019

2018

I/O Model of Computation.

Donghui Zhang, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Linear Hashing.

Donghui Zhang, Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Extendible Hashing.

Donghui Zhang, Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

B+-Tree.

Donghui Zhang, Kenneth Paul Baclawski, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Grid File (and Family).

Apostolos N. Papadopoulos, Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Hash-Based Indexing.

Mirella M. Moro, Donghui Zhang, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Valid-Time Indexing.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Transaction-Time Indexing.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Sparse Index.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Dense Index.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Bitemporal Indexing.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Tree-Based Indexing.

Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Spatial Indexing Techniques.

Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Secondary Index.

Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Primary Index.

Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Indexed Sequential Access Method.

Alex Delis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Lightweight Cardinality Estimation in LSM-based Systems.

Ildar Absalyamov, Michael J. Carey, Vassilis J. Tsotras

Proceedings of the 2018 International Conference on Management of Data, 2018

Indexing moving object trajectories with hilbert curves.

Reaz Uddin, Chinya V. Ravishankar, Vassilis J. Tsotras

Proceedings of the 26th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2018

A Parallel and Scalable Processor for JSON Data.

Christina Pavlopoulou, E. Preston Carman Jr., Till Westmann, Michael J. Carey, Vassilis J. Tsotras

Proceedings of the 21st International Conference on Extending Database Technology, 2018

Massively parallel skyline computation for processing-in-memory architectures.

Vasileios Zois, Divya Gupta, Vassilis J. Tsotras, Walid A. Najjar, Jean-François Roy

Proceedings of the 27th International Conference on Parallel Architectures and Compilation Techniques, 2018

2017

Mobile Object Indexing.

George Kollios, Vassilis J. Tsotras, Dimitrios Gunopulos

Proceedings of the Encyclopedia of GIS., 2017

R-Trees: A Dynamic Index Structure for Spatial Searching.

Marios Hadjieleftheriou, Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of GIS., 2017

Indexing Spatiotemporal Archives.

Marios Hadjieleftheriou, George Kollios, Vassilis J. Tsotras, Dimitrios Gunopulos

Proceedings of the Encyclopedia of GIS., 2017

Index Structures, Extensible.

Marios Hadjieleftheriou, Erik G. Hoel, Vassilis J. Tsotras

Proceedings of the Encyclopedia of GIS., 2017

A BAD Demonstration: Towards Big Active Data.

Steven Jacobs, Md. Yusuf Sarwar Uddin, Michael J. Carey, Vagelis Hristidis, Vassilis J. Tsotras, Nalini Venkatasubramanian, Yao Wu, Syed Safir, Purvi Kaul, Xikui Wang, Mohiuddin Abdul Qader, Yawei Li

Proc. VLDB Endow., 2017

Efficient Computation of Top-k Frequent Terms over Spatio-temporal Ranges.

Pritom Ahmed, Mahbub Hasan, Abhijith Kashyap, Vagelis Hristidis, Vassilis J. Tsotras

Proceedings of the 2017 ACM International Conference on Management of Data, 2017

Efficient Processing of Reachability Queries with Meetings.

Elena Vladislavivna Strzheletska, Vassilis J. Tsotras

Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2017

Assembly Queries: Planning and Discovering Assemblies of Moving Objects Using Partial Information.

Reaz Uddin, Michael N. Rice, Chinya V. Ravishankar, Vassilis J. Tsotras

Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2017

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

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

Proceedings of the 19th International Conference on Extending Database Technology, 2016

Breaking BAD: a data serving vision for big active data.

Michael J. Carey, Steven Jacobs, Vassilis J. Tsotras

Proceedings of the 10th ACM International Conference on Distributed and Event-based Systems, 2016

FPGA-accelerated group-by aggregation using synchronizing caches.

Ildar Absalyamov, Prerna Budhkar, Skyler Windh, Robert J. Halstead, Walid A. Najjar, Vassilis J. Tsotras

Proceedings of the 12th International Workshop on Data Management on New Hardware, 2016

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

Apache VXQuery: A Scalable XQuery Implementation.

E. Preston Carman Jr., Till Westmann, Vinayak R. Borkar, Michael J. Carey, Vassilis J. Tsotras

CoRR, 2015

RICC: Fast Reachability Query Processing on Large Spatiotemporal Datasets.

Elena Vladislavivna Strzheletska, Vassilis J. Tsotras

Proceedings of the Advances in Spatial and Temporal Databases, 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, Vassilis J. Tsotras

Proceedings of the Sixth ACM Symposium on Cloud Computing, 2015

FPGA-based Multithreading for In-Memory Hash Joins.

Robert J. Halstead, Ildar Absalyamov, Walid A. Najjar, Vassilis J. Tsotras

Proceedings of the Seventh Biennial Conference on Innovative Data Systems Research, 2015

A scalable parallel XQuery processor.

E. Preston Carman Jr., Till Westmann, Vinayak R. Borkar, Michael J. Carey, Vassilis J. Tsotras

Proceedings of the 2015 IEEE International Conference on Big Data (IEEE BigData 2015), Santa Clara, CA, USA, October 29, 2015

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

AsterixDB: A Scalable, Open Source BDMS.

Sattam Alsubaiee, Yasser Altowim, Hotham Altwaijry, Alexander Behm, Vinayak R. Borkar, Yingyi Bu, Michael J. Carey, Inci Cetindil, Madhusudan Cheelangi, Khurram Faraaz, Eugenia Gabrielova, Raman Grover, Zachary Heilbron, Young-Seok Kim, Chen Li, Guangqiang Li, Ji Mahn Ok, Nicola Onose, Pouria Pirzadeh, Vassilis J. Tsotras, Rares Vernica, Jian Wen, Till Westmann

Proc. VLDB Endow., 2014

Efficient temporal shortest path queries on evolving social graphs.

Wenyu Huo, Vassilis J. Tsotras

Proceedings of the Conference on Scientific and Statistical Database Management, 2014

User effort minimization through adaptive diversification.

Mahbub Hasan, Abhijith Kashyap, Vagelis Hristidis, Vassilis J. Tsotras

Proceedings of the 20th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 2014

Distributed Diversification of Large Datasets.

Mahbub Hasan, Abdullah Mueen, Vassilis J. Tsotras

Proceedings of the 2014 IEEE International Conference on Cloud Engineering, 2014

2013

Spatio-Temporal Databases - Complex Motion Pattern Queries.

Marcos R. Vieira, Vassilis J. Tsotras

Springer Briefs in Computer Science, Springer, ISBN: 978-3-319-02408-0, 2013

Online Ordering of Overlapping Data Sources.

Mariam Salloum, Xin Luna Dong, Divesh Srivastava, Vassilis J. Tsotras

Proc. VLDB Endow., 2013

Revisiting Aggregation for Data Intensive Applications: A Performance Study.

Jian Wen, Vinayak R. Borkar, Michael J. Carey, Vassilis J. Tsotras

CoRR, 2013

High-Performance XML Twig Filtering using GPUs.

Ildar Absalyamov, Roger Moussalli, Vassilis J. Tsotras, Walid A. Najjar

Proceedings of the International Workshop on Accelerating Data Management Systems Using Modern Processor and Storage Architectures, 2013

Stream-Mode FPGA Acceleration of Complex Pattern Trajectory Querying.

Roger Moussalli, Marcos R. Vieira, Walid A. Najjar, Vassilis J. Tsotras

Proceedings of the Advances in Spatial and Temporal Databases, 2013

STEM: a spatio-temporal miner for bursty activity.

Theodoros Lappas, Marcos R. Vieira, Dimitrios Gunopulos, Vassilis J. Tsotras

Proceedings of the ACM SIGMOD International Conference on Management of Data, 2013

Engineering Generalized Shortest Path queries.

Michael N. Rice, Vassilis J. Tsotras

Proceedings of the 29th IEEE International Conference on Data Engineering, 2013

Parameterized algorithms for generalized traveling salesman problems in road networks.

Michael N. Rice, Vassilis J. Tsotras

Proceedings of the 21st SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2013

Revisiting aggregation techniques for big data.

Vassilis J. Tsotras

Proceedings of the sixteenth international workshop on Data warehousing and OLAP, 2013

2012

On The Spatiotemporal Burstiness of Terms.

Theodoros Lappas, Marcos R. Vieira, Dimitrios Gunopulos, Vassilis J. Tsotras

Proc. VLDB Endow., 2012

Route planning with flexible edge restrictions.

Robert Geisberger, Michael N. Rice, Peter Sanders, Vassilis J. Tsotras

ACM J. Exp. Algorithmics, 2012

Exact Graph Search Algorithms for Generalized Traveling Salesman Path Problems.

Michael N. Rice, Vassilis J. Tsotras

Proceedings of the Experimental Algorithms - 11th International Symposium, 2012

Bidirectional A* Search with Additive Approximation Bounds.

Michael N. Rice, Vassilis J. Tsotras

Proceedings of the Fifth Annual Symposium on Combinatorial Search, 2012

A Spatial Caching Framework for Map Operations in Geographical Information Systems.

Marcos R. Vieira, Petko Bakalov, Erik G. Hoel, Vassilis J. Tsotras

Proceedings of the 13th IEEE International Conference on Mobile Data Management, 2012

Online Identification of Dwell Regions for Moving Objects.

Muhammad Reaz Uddin, Chinya V. Ravishankar, Vassilis J. Tsotras

Proceedings of the 13th IEEE International Conference on Mobile Data Management, 2012

A Comparison of Top-k Temporal Keyword Querying over Versioned Text Collections.

Wenyu Huo, Vassilis J. Tsotras

Proceedings of the Database and Expert Systems Applications, 2012

Querying Transaction-Time Databases under Branched Schema Evolution.

Wenyu Huo, Vassilis J. Tsotras

Proceedings of the Database and Expert Systems Applications, 2012

Diversifying query results on semi-structured data.

Mahbub Hasan, Abdullah Mueen, Vassilis J. Tsotras, Eamonn J. Keogh

Proceedings of the 21st ACM International Conference on Information and Knowledge Management, 2012

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

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

ASTERIX: towards a scalable, semistructured data platform for evolving-world models.

Alexander Behm, Vinayak R. Borkar, Michael J. Carey, Raman Grover, Chen Li, Nicola Onose, Rares Vernica, Alin Deutsch, Yannis Papakonstantinou, Vassilis J. Tsotras

Distributed Parallel Databases, 2011

Efficient XML Path Filtering Using GPUs.

Roger Moussalli, Robert J. Halstead, Mariam Salloum, Walid A. Najjar, Vassilis J. Tsotras

Proceedings of the International Workshop on Accelerating Data Management Systems Using Modern Processor and Storage Architectures, 2011

FlexTrack: A System for Querying Flexible Patterns in Trajectory Databases.

Marcos R. Vieira, Petko Bakalov, Vassilis J. Tsotras

Proceedings of the Advances in Spatial and Temporal Databases, 2011

A System for Discovering Regions of Interest from Trajectory Data.

Muhammad Reaz Uddin, Chinya V. Ravishankar, Vassilis J. Tsotras

Proceedings of the Advances in Spatial and Temporal Databases, 2011

Finding Regions of Interest from Trajectory Data.

Muhammad Reaz Uddin, Chinya V. Ravishankar, Vassilis J. Tsotras

Proceedings of the 12th IEEE International Conference on Mobile Data Management, 2011

Complex motion pattern queries for trajectories.

Marcos R. Vieira, Vassilis J. Tsotras

Proceedings of the Workshops Proceedings of the 27th International Conference on Data Engineering, 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

Proceedings of the 27th International Conference on Data Engineering, 2011

Massively parallel XML twig filtering using dynamic programming on FPGAs.

Roger Moussalli, Mariam Salloum, Walid A. Najjar, Vassilis J. Tsotras

Proceedings of the 27th International Conference on Data Engineering, 2011

2010

Graph Indexing of Road Networks for Shortest Path Queries with Label Restrictions.

Michael N. Rice, Vassilis J. Tsotras

Proc. VLDB Endow., 2010

Querying Spatio-temporal Patterns in Mobile Phone-Call Databases.

Marcos R. Vieira, Enrique Frías-Martínez, Petko Bakalov, Vanessa Frías-Martínez, Vassilis J. Tsotras

Proceedings of the Eleventh International Conference on Mobile Data Management, 2010

Accelerating XML Query Matching through Custom Stack Generation on FPGAs.

Roger Moussalli, Mariam Salloum, Walid A. Najjar, Vassilis J. Tsotras

Proceedings of the High Performance Embedded Architectures and Compilers, 2010

On continuous monitoring top-k unsafe moving objects.

Jian Wen, Vassilis J. Tsotras

Proceedings of the 18th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems, 2010

Querying trajectories using flexible patterns.

Marcos R. Vieira, Petko Bakalov, Vassilis J. Tsotras

Proceedings of the EDBT 2010, 2010

Temporal Top-<i>k</i> Search in Social Tagging Sites Using Multiple Social Networks.

Wenyu Huo, Vassilis J. Tsotras

Proceedings of the Database Systems for Advanced Applications, 2010

2009

I/O Model of Computation.

Donghui Zhang, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Linear Hashing.

Donghui Zhang, Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Extendible Hashing.

Donghui Zhang, Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

B+-Tree.

Donghui Zhang, Kenneth Baclawski, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Grid File (and Family).

Apostolos N. Papadopoulos, Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Hash-based Indexing.

Mirella M. Moro, Donghui Zhang, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Valid-Time Indexing.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Transaction-Time Indexing.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Sparse Index.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Dense Index.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Bi-Temporal Indexing.

Mirella M. Moro, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Tree-based Indexing.

Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Spatial Indexing Techniques.

Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Secondary Index.

Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Primary Index.

Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 2009

Indexed Sequential Access Method.

Alex Delis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of Database Systems, 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

Letter from the Special Issue Editor.

Marios Hadjieleftheriou, Vassilis J. Tsotras

IEEE Data Eng. Bull., 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

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

Experimental Evaluation of Query Processing Techniques over Multiversion XML Documents.

Adam Woss, Vassilis J. Tsotras

Proceedings of the 12th International Workshop on the Web and Databases, 2009

Efficient and Scalable Sequence-Based XML Filtering.

Mariam Salloum, Vassilis J. Tsotras

Proceedings of the 12th International Workshop on the Web and Databases, 2009

Versioning of Network Models in a Multiuser Environment.

Petko Bakalov, Erik G. Hoel, Sudhakar Menon, Vassilis J. Tsotras

Proceedings of the Advances in Spatial and Temporal Databases, 2009

On-line discovery of flock patterns in spatio-temporal data.

Marcos R. Vieira, Petko Bakalov, Vassilis J. Tsotras

Proceedings of the 17th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems, 2009

Boosting XML filtering through a scalable FPGA-based architecture.

Abhishek Mitra, Marcos R. Vieira, Petko Bakalov, Vassilis J. Tsotras, Walid A. Najjar

Proceedings of the Fourth Biennial Conference on Innovative Data Systems Research, 2009

2008

Mobile Object Indexing.

George Kollios, Vassilis J. Tsotras, Dimitrios Gunopulos

Proceedings of the Encyclopedia of GIS., 2008

R-Trees - A Dynamic Index Structure for Spatial Searching.

Marios Hadjieleftheriou, Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Proceedings of the Encyclopedia of GIS., 2008

Indexing Spatio-temporal Archives.

Marios Hadjieleftheriou, George Kollios, Vassilis J. Tsotras, Dimitrios Gunopulos

Proceedings of the Encyclopedia of GIS., 2008

Index Structures, Extensible.

Marios Hadjieleftheriou, Erik G. Hoel, Vassilis J. Tsotras

Proceedings of the Encyclopedia of GIS., 2008

On computing temporal aggregates with range predicates.

Donghui Zhang, Alexander Markowetz, Vassilis J. Tsotras, Dimitrios Gunopulos, Bernhard Seeger

ACM Trans. Database Syst., 2008

XML Structural Summaries.

Mirella Moura Moro, Zografoula Vagena, Vassilis J. Tsotras

Proc. VLDB Endow., 2008

Letter from the Special Issue Editors.

Michael J. Carey, Vassilis J. Tsotras

IEEE Data Eng. Bull., 2008

A Generic Framework for Continuous Motion Pattern Query Evaluation.

Petko Bakalov, Vassilis J. Tsotras

Proceedings of the 24th International Conference on Data Engineering, 2008

Maintaining Connectivity in Dynamic Multimodal Network Models.

Petko Bakalov, Erik G. Hoel, Wee-Liang Heng, Vassilis J. Tsotras

Proceedings of the 24th International Conference on Data Engineering, 2008

Editing and versioning dynamic network models.

Petko Bakalov, Erik G. Hoel, Wee-Liang Heng, Vassilis J. Tsotras

Proceedings of the 16th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems, 2008

2007

Value-Aware RoXSum: Effective Message Aggregation for XML-Aware Information Dissemination.

Zografoula Vagena, Mirella Moura Moro, Vassilis J. Tsotras

Proceedings of the Tenth International Workshop on the Web and Databases, 2007

Early Profile Pruning on XML-aware Publish/Subscribe Systems.

Mirella Moura Moro, Petko Bakalov, Vassilis J. Tsotras

Proceedings of the 33rd International Conference on Very Large Data Bases, 2007

Recent Advances on Querying and Managing Trajectories.

Vassilis J. Tsotras

Proceedings of the Advances in Spatial and Temporal Databases, 2007

RoXSum: Leveraging Data Aggregation and Batch Processing for XML Routing.

Zografoula Vagena, Mirella Moura Moro, Vassilis J. Tsotras

Proceedings of the 23rd International Conference on Data Engineering, 2007

TS2-tree - an efficient similarity based organization for trajectory data.

Petko Bakalov, Eamonn J. Keogh, Vassilis J. Tsotras

Proceedings of the 15th ACM International Symposium on Geographic Information Systems, 2007

2006

Indexing spatiotemporal archives.

Marios Hadjieleftheriou, George Kollios, Vassilis J. Tsotras, Dimitrios Gunopulos

VLDB J., 2006

Supporting complex queries on multiversion XML documents.

Shu-Yao Chien, Vassilis J. Tsotras, Carlo Zaniolo, Donghui Zhang

ACM Trans. Internet Techn., 2006

Evaluating structural summaries as access methods for XML.

Mirella Moura Moro, Zografoula Vagena, Vassilis J. Tsotras

Proceedings of the 15th international conference on World Wide Web, 2006

Continuous Spatiotemporal Trajectory Joins.

Petko Bakalov, Vassilis J. Tsotras

Proceedings of the GeoSensor Networks, Second International Conference, 2006

2005

Optimizing spatial Min/Max aggregations.

Donghui Zhang, Vassilis J. Tsotras

VLDB J., 2005

Indexing mobile objects using dual transformations.

George Kollios, Dimitris Papadopoulos, Dimitrios Gunopulos, Vassilis J. Tsotras

VLDB J., 2005

Selectivity estimators for multidimensional range queries over real attributes.

Dimitrios Gunopulos, George Kollios, Vassilis J. Tsotras, Carlotta Domeniconi

VLDB J., 2005

SaIL: A Spatial Index Library for Efficient Application Integration.

Marios Hadjieleftheriou, Erik G. Hoel, Vassilis J. Tsotras

GeoInformatica, 2005

Efficient Handling of Positional Predicates Within XML Query Processing.

Zografoula Vagena, Nick Koudas, Divesh Srivastava, Vassilis J. Tsotras

Proceedings of the Database and XML Technologies, 2005

Answering order-based queries over XML data.

Zografoula Vagena, Nick Koudas, Divesh Srivastava, Vassilis J. Tsotras

Proceedings of the 14th international conference on World Wide Web, 2005

Indexing Schemes for Efficient Aggregate Computation over Structural Joins.

Priya Mandawat, Vassilis J. Tsotras

Proceedings of the Eight International Workshop on the Web & Databases (WebDB 2005), 2005

Tree-Pattern Queries on a Lightweight XML Processor.

Mirella Moura Moro, Zografoula Vagena, Vassilis J. Tsotras

Proceedings of the 31st International Conference on Very Large Data Bases, Trondheim, Norway, August 30, 2005

Complex Spatio-Temporal Pattern Queries.

Marios Hadjieleftheriou, George Kollios, Petko Bakalov, Vassilis J. Tsotras

Proceedings of the 31st International Conference on Very Large Data Bases, Trondheim, Norway, August 30, 2005

Efficient trajectory joins using symbolic representations.

Petko Bakalov, Marios Hadjieleftheriou, Eamonn J. Keogh, Vassilis J. Tsotras

Proceedings of the 6th International Conference on Mobile Data Management (MDM 2005), 2005

Time relaxed spatiotemporal trajectory joins.

Petko Bakalov, Marios Hadjieleftheriou, Vassilis J. Tsotras

Proceedings of the 13th ACM International Workshop on Geographic Information Systems, 2005

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

Proceedings of the 2nd Workshop on Data Management for Sensor Networks, 2005

2004

Twig Query Processing over Graph-Structured XML Data.

Zografoula Vagena, Mirella Moura Moro, Vassilis J. Tsotras

Proceedings of the Seventh International Workshop on the Web and Databases, 2004

Spatio-Temporal Data Services in a Shared-Nothing Environment.

Marios Hadjieleftheriou, Vassil Kriakov, Yangui Tao, George Kollios, Alex Delis, Vassilis J. Tsotras

Proceedings of the 16th International Conference on Scientific and Statistical Database Management (SSDBM 2004), 2004

SaIL: A Library for Efficient Application Integration of Spatial Indices.

Marios Hadjieleftheriou, Erik G. Hoel, Vassilis J. Tsotras

Proceedings of the 16th International Conference on Scientific and Statistical Database Management (SSDBM 2004), 2004

Supporting Branched Versions on XML Documents.

Zografoula Vagena, Mirella Moura Moro, Vassilis J. Tsotras

Proceedings of the 14th International Workshop on Research Issues in Data Engineering (RIDE-WS-ECEG 2004), 2004

Efficient Processing of XML Containment Queries Using Partition-Based Schemes.

Zografoula Vagena, Mirella Moura Moro, Vassilis J. Tsotras

Proceedings of the 8th International Database Engineering and Applications Symposium (IDEAS 2004), 2004

Knowledge Management Over Time-Varying Geospatial Datasets.

Peggy Agouris, Anthony Stefanidis, Kate Beard, Mark Gahegan, Vassilis J. Tsotras, Dimitrios Gunopulos

Proceedings of the 2004 Annual National Conference on Digital Government Research, 2004

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

Path-expression Queries over Multiversion XML Documents.

Zografoula Vagena, Vassilis J. Tsotras

Proceedings of the International Workshop on Web and Databases, 2003

Performance Evaluation of Spatio-temporal Selectivity Estimation Techniques.

Marios Hadjieleftheriou, George Kollios, Vassilis J. Tsotras

Proceedings of the 15th International Conference on Scientific and Statistical Database Management (SSDBM 2003), 2003

On-Line Discovery of Dense Areas in Spatio-temporal Databases.

Marios Hadjieleftheriou, George Kollios, Dimitrios Gunopulos, Vassilis J. Tsotras

Proceedings of the Advances in Spatial and Temporal Databases, 8th International Symposium, 2003

2002

Efficient schemes for managing multiversionXML documents.

Shu-Yao Chien, Vassilis J. Tsotras, Carlo Zaniolo

VLDB J., 2002

Hashing Methods for Temporal Data.

George Kollios, Vassilis J. Tsotras

IEEE Trans. Knowl. Data Eng., 2002

Indexing Mobile Objects Using Duality Transforms.

Dimitris Papadopoulos, George Kollios, Dimitrios Gunopulos, Vassilis J. Tsotras

IEEE Data Eng. Bull., 2002

Efficient Structural Joins on Indexed XML Documents.

Shu-Yao Chien, Zografoula Vagena, Donghui Zhang, Vassilis J. Tsotras, Carlo Zaniolo

Proceedings of 28th International Conference on Very Large Data Bases, 2002

Index Based Processing of Semi-Restrictive Temporal Joins.

Donghui Zhang, Vassilis J. Tsotras

Proceedings of the 9th International Symposium on Temporal Representation and Reasoning, 2002

Efficient Aggregation over Objects with Extent.

Donghui Zhang, Vassilis J. Tsotras, Dimitrios Gunopulos

Proceedings of the Twenty-first ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, 2002

Efficient Temporal Join Processing Using Indices.

Donghui Zhang, Vassilis J. Tsotras, Bernhard Seeger

Proceedings of the 18th International Conference on Data Engineering, San Jose, CA, USA, February 26, 2002

Temporal Aggregation over Data Streams Using Multiple Granularities.

Donghui Zhang, Dimitrios Gunopulos, Vassilis J. Tsotras, Bernhard Seeger

Proceedings of the Advances in Database Technology, 2002

Efficient Indexing of Spatiotemporal Objects.

Marios Hadjieleftheriou, George Kollios, Vassilis J. Tsotras, Dimitrios Gunopulos

Proceedings of the Advances in Database Technology, 2002

Efficient Complex Query Support for Multiversion XML Documents.

Shu-Yao Chien, Vassilis J. Tsotras, Carlo Zaniolo, Donghui Zhang

Proceedings of the Advances in Database Technology, 2002

Indexing Mobile Objects on the Plane.

Dimitris Papadopoulos, George Kollios, Dimitrios Gunopulos, Vassilis J. Tsotras

Proceedings of the 13th International Workshop on Database and Expert Systems Applications (DEXA 2002), 2002

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

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

XML Document Versioning.

Shu-Yao Chien, Vassilis J. Tsotras, Carlo Zaniolo

SIGMOD Rec., 2001

Storing and Querying Multiversion XML Documents using Durable Node Numbers.

Shu-Yao Chien, Vassilis J. Tsotras, Carlo Zaniolo, Donghui Zhang

Proceedings of the 2nd International Conference on Web Information Systems Engineering, 2001

Efficient Management of Multiversion Documents by Object Referencing.

Shu-Yao Chien, Vassilis J. Tsotras, Carlo Zaniolo

Proceedings of the VLDB 2001, 2001

Copy-Based versus Edit-Based Version Management Schemes for Structured Documents.

Shu-Yao Chien, Vassilis J. Tsotras, Carlo Zaniolo

Proceedings of the Eleventh International Workshop on Research Issues in Data Engineering: Document Management for Data Intensive Business and Scientific Applications, 2001

Efficient Computation of Temporal Aggregates with Range Predicates.

Donghui Zhang, Alexander Markowetz, Vassilis J. Tsotras, Dimitrios Gunopulos, Bernhard Seeger

Proceedings of the Twentieth ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, 2001

Improving Min/Max Aggregation over Spatial Objects.

Donghui Zhang, Vassilis J. Tsotras

Proceedings of the ACM-GIS 2001, 2001

2000

Version Management of XML Documents.

Shu-Yao Chien, Vassilis J. Tsotras, Carlo Zaniolo

Proceedings of the Third International Workshop on the Web and Databases, 2000

Approximating Multi-Dimensional Aggregate Range Queries over Real Attributes.

Dimitrios Gunopulos, George Kollios, Vassilis J. Tsotras, Carlotta Domeniconi

Proceedings of the 2000 ACM SIGMOD International Conference on Management of Data, 2000

1999

Broadcast scheduling for information distribution.

Chi-Jiun Su, Leandros Tassiulas, Vassilis J. Tsotras

Wirel. Networks, 1999

Supporting Temporal Views in a Management Information Base.

Vassilis J. Tsotras, Vidyadhar Phalke, Anil Kumar, B. Gopinath

J. Netw. Syst. Manag., 1999

Comparison of Access Methods for Time-Evolving Data.

Betty Salzberg, Vassilis J. Tsotras

ACM Comput. Surv., 1999

Nearest Neighbor Queries in a Mobile Environment.

George Kollios, Dimitrios Gunopulos, Vassilis J. Tsotras

Proceedings of the Spatio-Temporal Database Management, 1999

On Indexing Mobile Objects.

George Kollios, Dimitrios Gunopulos, Vassilis J. Tsotras

Proceedings of the Eighteenth ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, May 31, 1999

Indexing Animated Objects.

George Kollios, Dimitrios Gunopulos, Vassilis J. Tsotras

Proceedings of the MIS '99, 1999

Advanced Database Indexing

Yannis Manolopoulos, Yannis Theodoridis, Vassilis J. Tsotras

Advances in Database Systems 17, Kluwer, ISBN: 0-7923-7716-8, 1999

1998

Designing Access Methods for Bitemporal Databases.

Anil Kumar, Vassilis J. Tsotras, Christos Faloutsos

IEEE Trans. Knowl. Data Eng., 1998

An Extensible Notation for Spatiotemporal Index Queries.

Vassilis J. Tsotras, Christian S. Jensen, Richard T. Snodgrass

SIGMOD Rec., 1998

1996

Temporal Database Bibliography Update.

Vassilis J. Tsotras, Anil Kumar

SIGMOD Rec., 1996

1995

Historical Queries Along Multiple Lines of Time Evolution

Gad M. Landau, Jeanette P. Schmidt, Vassilis J. Tsotras

VLDB J., 1995

Efficient Management of Time-Evolving Databases.

Vassilis J. Tsotras, B. Gopinath, George W. Hart

IEEE Trans. Knowl. Data Eng., 1995

The Snapshot Index: An I/O-optimal access method for timeslice queries.

Vassilis J. Tsotras, Nickolas Kangerlaris

Inf. Syst., 1995

A Load-Balanced Parallel Sorting Algorithm for Shared-Nothing Architectures.

Anil Kumar, Tony T. Lee, Vassilis J. Tsotras

Distributed Parallel Databases, 1995

Access Methods for Bi-Temporal Databases

Anil Kumar, Vassilis J. Tsotras, Christos Faloutsos

Proceedings of the Recent Advances in Temporal Databases, 1995

1993

Efficient Support of Historical Queries for Multiple Lines of Evolution.

Gad M. Landau, Jeanette P. Schmidt, Vassilis J. Tsotras

Proceedings of the Ninth International Conference on Data Engineering, 1993

1992

Optimal Versioning of Objects.

Vassilis J. Tsotras, B. Gopinath

Proceedings of the Eighth International Conference on Data Engineering, 1992

1990

Using universe knowledge and arithmetic to get faster parallel algorithms.

Vassilis J. Tsotras, B. Gopinath, George W. Hart

Proceedings of the Second IEEE Symposium on Parallel and Distributed Processing, 1990

Optimally Managing the History of an Evolving Forest.

Vassilis J. Tsotras, B. Gopinath, George W. Hart

Proceedings of the Algorithms, 1990

Efficient Algorithms for Managing the History of Evolving Databases.

Vassilis J. Tsotras, B. Gopinath

Proceedings of the ICDT'90, 1990