Nearest Neighbor Search on Vertically Partitioned High-Dimensional Data. - Evangelos Dellis; Bernhard Seeger; Akrivi Vlachou (DaWaK, 2005)

Constrained subspace skyline computation. - Evangelos Dellis; Akrivi Vlachou; Ilya Vladimirskiy; Bernhard Seeger; Yannis Theodoridis (CIKM, 2006)

Representing and Quantifying Rank - Change for the Web Graph. - Akrivi Vlachou; Michalis Vazirgiannis; Klaus Berberich (WAW, 2006)

Designing a Peer-to-Peer Architecture for Distributed Image Retrieval. - Akrivi Vlachou; Christos Doulkeridis; Dimitrios Mavroeidis; Michalis Vazirgiannis (Adaptive Multimedia Retrieval, 2007)

SKYPEER: Efficient Subspace Skyline Computation over Distributed Data. - Akrivi Vlachou; Christos Doulkeridis; Yannis Kotidis; Michalis Vazirgiannis (ICDE, 2007)

Peer-to-Peer Similarity Search in Metric Spaces. - Christos Doulkeridis; Akrivi Vlachou; Yannis Kotidis; Michalis Vazirgiannis (VLDB, 2007)

Skyline-based Peer-to-Peer Top-k Query Processing. - Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg; Michalis Vazirgiannis (ICDE, 2008)

Angle-based space partitioning for efficient parallel skyline computation. - Akrivi Vlachou; Christos Doulkeridis; Yannis Kotidis (SIGMOD Conference, 2008)

On efficient top-k query processing in highly distributed environments. - Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg; Michalis Vazirgiannis (SIGMOD Conference, 2008)

Web page rank prediction with markov models. - Michalis Vazirgiannis; Dimitris Drosos; Pierre Senellart; Akrivi Vlachou (WWW, 2008)

Efficient query processing over highly distributed data - Akrivi Vlachou (2008)

Multidimensional routing indices for efficient distributed query processing. - Christos Doulkeridis; Akrivi Vlachou; Kjetil Nørvåg; Yannis Kotidis; Michalis Vazirgiannis (CIKM, 2009)

AGiDS: A Grid-Based Strategy for Distributed Skyline Query Processing. - João B. Rocha-Junior; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (Globe, 2009)

Bandwidth-constrained distributed skyline computation. - Akrivi Vlachou; Kjetil Nørvåg (MobiDE, 2009)

Efficient range query processing in metric spaces over highly distributed data. - Christos Doulkeridis; Akrivi Vlachou; Yannis Kotidis; Michalis Vazirgiannis (Distributed Parallel Databases, 2009)

On the selectivity of multidimensional routing indices. - Christos Doulkeridis; Akrivi Vlachou; Kjetil Nørvåg; Yannis Kotidis; Michalis Vazirgiannis (CIKM, 2010)

Peer-to-Peer Similarity Search Based on M-Tree Indexing. - Akrivi Vlachou; Christos Doulkeridis; Yannis Kotidis (DASFAA (2), 2010)

Reverse top-k queries. - Akrivi Vlachou; Christos Doulkeridis; Yannis Kotidis; Kjetil Nørvåg (ICDE, 2010)

Ranking the sky: Discovering the importance of skyline points through subspace dominance relationships. - Akrivi Vlachou; Michalis Vazirgiannis (Data Knowl. Eng., 2010)

Efficient search based on content similarity over self-organizing P2P networks. - Christos Doulkeridis; Akrivi Vlachou; Kjetil Nørvåg; Yannis Kotidis; Michalis Vazirgiannis (Peer-to-Peer Netw. Appl., 2010)

Efficient Processing of Top-k Spatial Preference Queries. - João B. Rocha-Junior; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (Proc. VLDB Endow., 2010)

Identifying the Most Influential Data Objects with Reverse Top-k Queries. - Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg; Yannis Kotidis (Proc. VLDB Endow., 2010)

Efficient Routing of Subspace Skyline Queries over Highly Distributed Data. - Akrivi Vlachou; Christos Doulkeridis; Yannis Kotidis; Michalis Vazirgiannis (IEEE Trans. Knowl. Data Eng., 2010)

Efficient Distributed Top-k Query Processing with Caching. - Norvald H. Ryeng; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (DASFAA (2), 2011)

Efficient execution plans for distributed skyline query processing. - João B. Rocha-Junior; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (EDBT, 2011)

Monitoring reverse top-k queries over mobile devices. - Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (MobiDE, 2011)

Skyline query processing over joins. - Akrivi Vlachou; Christos Doulkeridis; Neoklis Polyzotis (SIGMOD Conference, 2011)

Monochromatic and Bichromatic Reverse Top-k Queries. - Akrivi Vlachou; Christos Doulkeridis; Yannis Kotidis; Kjetil Nørvåg (IEEE Trans. Knowl. Data Eng., 2011)

Distributed skyline processing: a trend in database research still going strong. - Katja Hose; Akrivi Vlachou (EDBT, 2012)

Processing of Rank Joins in Highly Distributed Systems. - Christos Doulkeridis; Akrivi Vlachou; Kjetil Nørvåg; Yannis Kotidis; Neoklis Polyzotis (ICDE, 2012)

Discovering Representative Skyline Points over Distributed Data. - Akrivi Vlachou; Christos Doulkeridis; Maria Halkidi (SSDBM, 2012)

Distributed top-k query processing by exploiting skyline summaries. - Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (Distributed Parallel Databases, 2012)

Metric-Based Similarity Search in Unstructured Peer-to-Peer Systems. - Akrivi Vlachou; Christos Doulkeridis; Yannis Kotidis (Trans. Large Scale Data Knowl. Centered Syst., 2012)

A survey of skyline processing in highly distributed environments. - Katja Hose; Akrivi Vlachou (VLDB J., 2012)

Peer-to-Peer Query Processing over Multidimensional Data. - Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg; Yannis Kotidis (Springer, 2012)

Branch-and-bound algorithm for reverse top-k queries. - Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg; Yannis Kotidis (SIGMOD Conference, 2013)

Discovering Influential Data Objects over Time. - Orestis Gkorgkas; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (SSTD, 2013)

eSkyline: Processing Skyline Queries over Encrypted Data. - Suvarna Bothe; Panagiotis Karras; Akrivi Vlachou (Proc. VLDB Endow., 2013)

Skyline Query Processing over Encrypted Data: An Attribute-Order-Preserving-Free Approach. - Suvarna Bothe; Alfredo Cuzzocrea; Panagiotis Karras; Akrivi Vlachou (PSBD@CIKM, 2014)

APSkyline: Improved Skyline Computation for Multicore Architectures. - Stian Liknes; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (DASFAA (1), 2014)

Location-Aware Tag Recommendations for Flickr. - Ioanna Miliou; Akrivi Vlachou (DEXA (1), 2014)

Efficient processing of exploratory top-k joins. - Orestis Gkorgkas; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (SSDBM, 2014)

Finding the Most Diverse Products using Preference Queries. - Orestis Gkorgkas; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (EDBT, 2015)

On Processing Top-k Spatio-Textual Preference Queries. - George Tsatsanifos; Akrivi Vlachou (EDBT, 2015)

The RoadRunner framework for efficient and scalable processing of big data. - Christos Doulkeridis; Akrivi Vlachou; Panagiotis Nikitopoulos; Panagiotis Tampakis; Mei Saouk (Panhellenic Conference on Informatics, 2015)

Maximizing Influence of Spatio-Textual Objects Based on Keyword Selection. - Orestis Gkorgkas; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (SSTD, 2015)

Efficient processing of top-k joins in MapReduce. - Mei Saouk; Christos Doulkeridis; Akrivi Vlachou; Kjetil Nørvåg (IEEE BigData, 2016)

A Framework for Clustering and Classification of Big Data Using Spark. - Xristos Mallios; Vasilis Vassalos; Tassos Venetis; Akrivi Vlachou (OTM Conferences, 2016)

Computing Skylines over Encrypted Data in Cloud Environments. - Suvarna Bothe; Alfredo Cuzzocrea; Panagiotis Karras; Akrivi Vlachou (SEBD, 2016)

Parallel and Distributed Processing of Spatial Preference Queries using Keywords. - Christos Doulkeridis; Akrivi Vlachou; Dimitris Mpestas; Nikos Mamoulis (EDBT, 2017)

The datAcron Ontology for Semantic Trajectories. - Georgios M. Santipantakis; George A. Vouros; Apostolos Glenis; Christos Doulkeridis; Akrivi Vlachou (ESWC (Satellite Events), 2017)

Specification of Semantic Trajectories Supporting Data Transformations for Analytics: The datAcron Ontology. - Georgios M. Santipantakis; George A. Vouros; Christos Doulkeridis; Akrivi Vlachou; Gennady L. Andrienko; Natalia V. Andrienko; Georg Fuchs; Jose Manuel Cordero Garcia; Miguel Garcia Martinez (SEMANTiCS, 2017)

Taming Big Maritime Data to Support Analytics. - George A. Vouros; Christos Doulkeridis; Georgios M. Santipantakis; Akrivi Vlachou (IF&GIS, 2017)

Efficient RDF Query Processing using Multidimensional Indexing. - Akrivi Vlachou (PCI, 2017)

Exploratory product search using top-k join queries. - Orestis Gkorgkas; Akrivi Vlachou; Christos Doulkeridis; Kjetil Nørvåg (Inf. Syst., 2017)

User-Centric Similarity Search. - Konstantinos Georgoulas; Akrivi Vlachou; Christos Doulkeridis; Yannis Kotidis (IEEE Trans. Knowl. Data Eng., 2017)

DiStRDF: Distributed Spatio-temporal RDF Queries on Spark. - Panagiotis Nikitopoulos; Akrivi Vlachou; Christos Doulkeridis; George A. Vouros (EDBT/ICDT Workshops, 2018)

FAIMUSS: Flexible Data Transformation to RDF from Multiple Streaming Sources. - Georgios M. Santipantakis; Apostolos Glenis; Nikolaos Kalaitzian; Akrivi Vlachou; Christos Doulkeridis; George A. Vouros (EDBT, 2018)

Big Data Analytics for Time Critical Mobility Forecasting: Recent Progress and Research Challenges. - George A. Vouros; Akrivi Vlachou; Georgios M. Santipantakis; Christos Doulkeridis; Nikos Pelekis; Harris V. Georgiou; Yannis Theodoridis; Kostas Patroumpas; Elias Alevizos; Alexander Artikis; Christophe Claramunt; Cyril Ray; et al. (EDBT, 2018)

A Stream Reasoning System for Maritime Monitoring. - Georgios M. Santipantakis; Akrivi Vlachou; Christos Doulkeridis; Alexander Artikis; Ioannis Kontopoulos; George A. Vouros (TIME, 2018)

Increasing Maritime Situation Awareness via Trajectory Detection, Enrichment and Recognition of Events. - George A. Vouros; Akrivi Vlachou; Georgios M. Santipantakis; Christos Doulkeridis; Nikos Pelekis; Harris V. Georgiou; Yannis Theodoridis; Kostas Patroumpas; Elias Alevizos; Alexander Artikis; Georg Fuchs; Michael Mock; et al. (W2GIS, 2018)

MaskLink: Efficient Link Discovery for Spatial Relations via Masking Areas. - Georgios M. Santipantakis; Christos Doulkeridis; George A. Vouros; Akrivi Vlachou (CoRR, 2018)

Stream Processing Languages in the Big Data Era. - Martin Hirzel; Guillaume Baudart; Angela Bonifati; Emanuele Della Valle; Sherif Sakr; Akrivi Vlachou (SIGMOD Rec., 2018)

Reverse Top-k Queries. - Akrivi Vlachou (Encyclopedia of Database Systems (2nd ed.), 2018)

Parallel and Distributed Processing of Reverse Top-k Queries. - Panagiotis Nikitopoulos; Georgios A. Sfyris; Akrivi Vlachou; Christos Doulkeridis; Orestis Telelis (ICDE, 2019)

Efficient spatio-temporal RDF query processing in large dynamic knowledge bases. - Akrivi Vlachou; Christos Doulkeridis; Apostolos Glenis; Georgios M. Santipantakis; George A. Vouros (SAC, 2019)

stLD: towards a spatio-temporal link discovery framework. - Georgios M. Santipantakis; Apostolos Glenis; Christos Doulkeridis; Akrivi Vlachou; George A. Vouros (SBD@SIGMOD, 2019)

NoDA: Unified NoSQL Data Access Operators for Mobility Data. - Nikolaos Koutroumanis; Panagiotis Nikitopoulos; Akrivi Vlachou; Christos Doulkeridis (SSTD, 2019)

ARGO: A Big Data Framework for Online Trajectory Prediction. - Petros Petrou; Panagiotis Nikitopoulos; Panagiotis Tampakis; Apostolos Glenis; Nikolaos Koutroumanis; Georgios M. Santipantakis; Kostas Patroumpas; Akrivi Vlachou; Harris V. Georgiou; Eva Chondrodima; Christos Doulkeridis; Nikos Pelekis; et al. (SSTD, 2019)

The datAcron Ontology for the Specification of Semantic Trajectories - Specification of Semantic Trajectories for Data Transformations Supporting Visual Analytics. - George A. Vouros; Georgios M. Santipantakis; Christos Doulkeridis; Akrivi Vlachou; Gennady L. Andrienko; Natalia V. Andrienko; Georg Fuchs; Jose Manuel Cordero Garcia; Miguel Garcia Martinez (J. Data Semant., 2019)

Distributed Storage of Large Knowledge Graphs with Mobility Data. - Panagiotis Nikitopoulos; Nikolaos Koutroumanis; Akrivi Vlachou; Christos Doulkeridis; George A. Vouros (Big Data Analytics for Time-Critical Mobility Forecasting, 2020)

Integrating Data by Discovering Topological and Proximity Relations Among Spatiotemporal Entities. - Georgios M. Santipantakis; Christos Doulkeridis; Akrivi Vlachou; George A. Vouros (Big Data Analytics for Time-Critical Mobility Forecasting, 2020)

Modeling Mobility Data and Constructing Large Knowledge Graphs to Support Analytics: The datAcron Ontology. - Georgios M. Santipantakis; George A. Vouros; Akrivi Vlachou; Christos Doulkeridis (Big Data Analytics for Time-Critical Mobility Forecasting, 2020)

The SPADES Framework for Scalable Management of Spatio-textual Data. - Akrivi Vlachou; Christos Doulkeridis; Nikolaos Koutroumanis; Dimitrios Poulopoulos; Kjetil Nørvåg (PCI, 2020)

SPARTAN: Semantic integration of big spatio-temporal data from streaming and archival sources. - Georgios M. Santipantakis; Apostolos Glenis; Kostas Patroumpas; Akrivi Vlachou; Christos Doulkeridis; George A. Vouros; Nikos Pelekis; Yannis Theodoridis (Future Gener. Comput. Syst., 2020)

A Novel Indexing Method for Spatial-Keyword Range Queries. - Panagiotis Tampakis; Dimitris Spyrellis; Christos Doulkeridis; Nikos Pelekis; Christos Kalyvas; Akrivi Vlachou (SSTD, 2021)

Declarative Querying of Heterogeneous NoSQL Stores. - Nikolaos Koutroumanis; Nikolaos Kousathanas; Christos Doulkeridis; Akrivi Vlachou (SEA-Data@VLDB, 2021)

Pruning techniques for parallel processing of reverse top-k queries. - Panagiotis Nikitopoulos; Georgios A. Sfyris; Akrivi Vlachou; Christos Doulkeridis; Orestis Telelis (Distributed Parallel Databases, 2021)

Parallel and scalable processing of spatio-temporal RDF queries using Spark. - Panagiotis Nikitopoulos; Akrivi Vlachou; Christos Doulkeridis; George A. Vouros (GeoInformatica, 2021)

A Demonstration of NoDA: Unified Access to NoSQL Stores. - Nikolaos Koutroumanis; Nikolaos Kousathanas; Christos Doulkeridis; Akrivi Vlachou (Proc. VLDB Endow., 2021)

A Survey on Big Data Processing Frameworks for Mobility Analytics. - Christos Doulkeridis; Akrivi Vlachou; Nikos Pelekis; Yannis Theodoridis (SIGMOD Rec., 2021)

On Decisive Skyline Queries. - Akrivi Vlachou; Christos Doulkeridis; João B. Rocha-Junior; Kjetil Nørvåg (DaWaK, 2022)

Tearing Down the Tower of Babel: Unified and Efficient Spatio-temporal Queries for NoSQL Stores. - Nikolaos Koutroumanis; Christos Doulkeridis; Akrivi Vlachou (MDM, 2022)

Introducing Algorithmic Thinking in Primary Education in Greece. - Athanasios Karakostas; Vasilis Liarokapis; Akrivi Vlachou (SEEDA-CECNSM, 2022)

Effective and efficient skyline query processing over attribute-order-preserving-free encrypted data in cloud-enabled databases. - Alfredo Cuzzocrea; Panagiotis Karras; Akrivi Vlachou (Future Gener. Comput. Syst., 2022)

RDF-Gen: generating RDF triples from big data sources. - Georgios M. Santipantakis; Konstantinos I. Kotis; Apostolos Glenis; George A. Vouros; Christos Doulkeridis; Akrivi Vlachou (Knowl. Inf. Syst., 2022)

Processing of Spatial-Keyword Range Queries in Apache Spark. - Aggelos Karabinos; Panagiotis Tampakis; Christos Doulkeridis; Akrivi Vlachou (BigSpatial@SIGSPATIAL, 2023)

Stimulating Primary School Students' Interest in Data Structures Through ESA's Astro Pi Challenges. - Athanasios Karakostas; Akrivi Vlachou (SEEDA-CECNSM, 2023)

Decisive skyline queries for truly balancing multiple criteria. - Akrivi Vlachou; Christos Doulkeridis; João B. Rocha-Junior; Kjetil Nørvåg (Data Knowl. Eng., 2023)

Diversity in Spatio-textual Data Objects. - Andreas Alamanos; Akrivi Vlachou (EDBT/ICDT Workshops, 2024)

Introducing Cryptographic and Sorting Algorithms to Primary School Students and its Effect in the Classroom. - Athanasios Karakostas; Akrivi Vlachou (EDUCON, 2024)

Parallel Spatial Join Processing with Adaptive Replication. - Nikolaos Koutroumanis; Christos Doulkeridis; Akrivi Vlachou (EDBT, 2025)