I am an Assistant Professor at the Research Division
E-Commerce in the
TU Wien . Prior to that, I was a postdoctoral researcher and a Marie Curie fellow at the
"Athena" Research Center , and at the
Hong Kong University of Science and Technology . I finished my PhD in 2009 at the
National Technical University of Athens under the supervision of professor
T. Sellis .
education
Oct. '04 - Feb. '09
PhD in Computer Science National Technical University of Athens, "Data Streams Management" supervised by Prof. Timos Sellis
Aug. '02 - May '04
MSc in Computer Science University of Southern California, supervised by Prof. Cyrus Shahabi
Oct. '96 - Oct '01
Diploma in Electrical and Computer Engineering National Technical University of Athens
publications
2020
Johannes Luef, Christian Ohrfandl, Dimitris Sacharidis, Hannes Werthner, A Recommender System For Investing In Early-Stage Enterprises , ACM SIGAPP Symposium On Applied Computing (SAC '20), March 30 - April 3, 2020
Michael Ion, Dimitris Sacharidis, Hannes Werthner, Designing a Recommender System for Board Games , ACM SIGAPP Symposium On Applied Computing (SAC '20), March 30 - April 3, 2020
2019
Leonard Weydemann, Dimitris Sacharidis, Hannes Werthner, Defining and Measuring Fairness in Location Recommendations , ACM SIGSPATIAL Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising, November 5, 2019
Dimitris Sacharidis, Kyriakos Mouratidis, Dimitrios Kleftogiannis, A Common Approach for Consumer and
Provider Fairness , ACM Conference on Recommender Systems (RecSys) Late-Breaking Results, September 16 - September 20, 2019
Ilias Kanellos, Thanasis Vergoulis, Dimitris Sacharidis, Theodore Dalamagas, and Yannis Vassiliou, Impact-Based Ranking of Scientific Publications: A Survey and Experimental Evaluation , IEEE Transactions on Knowledge and Data Engineering, 2019
Dimitris Sacharidis, Diversity and Novelty in Social-Based Collaborative Filtering , ACM Conference On User Modelling, Adaptation and Personalization (UMAP '19), June 9 - June 12, 2019
Dimitris Sacharidis, Modeling Uncertainty in Group Recommendations , ACM Conference On User Modelling, Adaptation and Personalization (UMAP '19), June 9 - June 12, 2019
Carine Pierrette Mukamakuza, Dimitris Sacharidis, Hannes Werthner, The Impact of Social Connections in Personalization , ACM Conference On User Modelling, Adaptation and Personalization (UMAP '19 adjunct), June 9 - June 12, 2019
Dimitris Sacharidis, Top-N Group Recommendations with Fairness , ACM SIGAPP Symposium On Applied Computing (SAC '19), April 6 - April 12, 2019
Karim Benouaret, Dimitris Sacharidis, Djamal Benslimane, Allel Hadjali, Selecting Services for Multiple Users: Let's Be Democratic , IEEE Transactions on Services Computing, 2019
2018
Dimitrios Skoutas, Dimitris Sacharidis, Kostas Patroumpas, Efficient Progressive and Diversified Top-k Best Region Search , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '18), November 6 - November 9, 2018
Dimitris Sacharidis, Paras Mehta, Dimitrios Skoutas, Kostas Patroumpas, Agnès Voisard, Selecting Representative and Diverse Spatio-Textual Posts over Sliding Windows 30th Conference on Scientific and Statistical Database Management (SSDBM '18), July 9 - July 11, 2018
Carine Pierrette Mukamakuza, Dimitris Sacharidis, Hannes Werthner, Mining User Behavior in Social Recommender Systems , 8th International Conference on Web Intelligence, Mining and Semantics (WIMS '18), June 25 - June 27, 2018
2017
Dimitris Sacharidis, Panagiotis Bouros, and Theodoros Chondrogiannis, Finding The Most Preferred Path , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '17), November 7 - November 10, 2017
Dimitris Sacharidis, Paras Mehta, Dimitrios Skoutas, Kostas Patroumpas, Agnès Voisard, Continuous Summarization of Streaming Spatio-Textual Posts , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '17), November 7 - November 10, 2017
Qihang Gu, Dimitris Sacharidis, Michael Mathioudakis, and Gang Wang, Inferring Venue Visits from GPS Trajectories , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '17), November 7 - November 10, 2017
Dimitris Sacharidis, Observing User Behavior in Group Recommender Systems , International Conference on Computational Social Science (IC2S2 '17), July 10-13, 2017
Dimitris Sacharidis, Group Recommendations by Learning Rating Behavior , International Conference on User Modelling, Adaptation and Personalization (UMAP '17), July 9-12, 2017
Paras Mehta, Manuel Kotlarski, Dimitrios Skoutas, Dimitris Sacharidis, Kostas Patroumpas, Agnès Voisard, μTOP: Spatio-Temporal Detection and Summarization of Locally Trending Topics in Microblog Posts (demo), International Conference on Extending Database Technology (EDBT '17), March 21-24, 2017
Paras Mehta, Dimitris Sacharidis, Dimitrios Skoutas, Agnès Voisard, Finding Socio-Textual Associations Among Locations , International Conference on Extending Database Technology (EDBT '17), March 21-24, 2017
2016
Paras Mehta, Dimitrios Skoutas, Dimitris Sacharidis, Agnès Voisard, Coverage and Diversity Aware Top-k Query for Spatio-Temporal Posts , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '16), October 31 - November 3, 2016 [doi]
Shuyao Qi, Dimitris Sacharidis, Panagiotis Bouros, Nikos Mamoulis, Snapshot and Continuous Points-based Trajectory Search , GeoInformatica [doi]
Paras Mehta, Dimitris Sacharidis, Dimitrios Skoutas, Agnès Voisard, Keyword-Based Retrieval of Frequent Location Sets in Geotagged Photo Trails , International ACM Web Science Conference (WebSci '16), May 22-25, 2016
Dimitrios Skoutas, Dimitris Sacharidis, Kostas Stamatoukos, Identifying and Describing Streets of Interest , International Conference on Extending Database Technology (EDBT '16), March 15-18, 2016
Angelos Papatriantafyllou, Dimitris Sacharidis, High Performance Parallel Summed-Area Table Kernels for Multi-Core and Many-Core Systems , International Conference on Parallel and Distributed Computing (EUROPAR '16), August 24-26, 2016 [doi]
Nikos Bikakis, Karim Benouaret, Dimitris Sacharidis, Finding Desirable Objects under Group Categorical Preferences , International Journal on Knowledge and Information Systems (KAIS)
2015
Dimitris Sacharidis, Amra Delic, Julia Neidhardt, Learning the Role and Behavior of Users in Group Decision Making , International Workshop on Decision Making and Recommender Systems 2015 (DMRS '15), October 22-23, 2015
Alexei Pozdnoukhov, Dimitris Sacharidis, Sen Xu, LBSN'15: Proceedings of the 8th ACM SIGSPATIAL International Workshop on Location-Based Social Networks , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '15), November 3, 2015
Dimitris Sacharidis, Antonios Deligiannakis, Spatial Cohesion Queries , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '15), November 3-6, 2015 [doi]
Panagiotis Bouros, Neal Lathia, Matthias Renz, Francesco Ricci, Dimitris Sacharidis, LocalRec'15: Workshop on Location-Aware Recommendations , ACM Conference on Recommender Systems (RecSys '15), September 16-20, 2015 [doi]
Shuyao Qi, Panagiotis Bouros, Dimitris Sacharidis, Nikos Mamoulis, Efficient Point-based Trajectory Search (best paper), International Symposium on Spatial and Temporal Databases (SSTD '15), August 26-28, 2015 [doi]
2014
Dimitris Sacharidis, Dimitrios Skoutas, Georgios Skoumas, Continuous Monitoring of Nearest Trajectories , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '14), November 4-7, 2014
Panagiotis Bouros, Dimitris Sacharidis, Nikos Bikakis, Regionally Influential Users in Location-Aware Social Networks , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '14), November 4-7, 2014
Ilias Kanellos, Thanasis Vergoulis, Dimitris Sacharidis, Theodore Dalamagas, Artemis Hatzigeorgiou, Stelios Sartzetakis, Timos Sellis, MR-microT: A MapReduce-based MicroRNA Target Prediction Method (demo), 26th Conference on Scientific and Statistical Database Management (SSDBM '14), June 30 - July 2, 2014
George Tsatsanifos, Dimitris Sacharidis, Timos Sellis, RIPPLE: A Scalable Framework for Distributed Processing of Rank Queries , International Conference on Extending Database Technology (EDBT '14), March 24-28, 2014
Nikos Bikakis, Karim Benouaret, Dimitris Sacharidis, Reconciling Multiple Categorical Preferences with Double Pareto-based Aggregation , International Conference on Database Systems for Advanced Applications (DASFAA '14), April 21-14, 2014
Dimitris Sacharidis, Timos Sellis, Efficient Identification of the Highest Diversity Gain Object , International Workshop on Information Search, Integration and Personalization (ISIP '14), October 9-10, 2014 [doi]
2013
Dimitris Sacharidis, Panagiotis Bouros, Routing Directions: Keeping it Fast and Simple , ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL '13), November 5-8, 2013
George Tsatsanifos, Dimitris Sacharidis, Timos Sellis, Index-based Query Processing on Distributed Multidimensional Data , GeoInformatica, 2013
2012
Sören Auer, Theodore Dalamagas, Helen E. Parkinson, François Bancilhon, Giorgos Flouris, Dimitris Sacharidis, Peter Buneman, Dimitris Kotzinos, Yannis Stavrakas, Vassilis Christophides, George Papastefanatos, Kostas Thiveos, Diachronic Linked Data: Towards Long-term Preservation of Structured Interrelated Information , International Workshop on Open Data (WOD '12), May 25, 2012
Karim Benouaret, Dimitris Sacharidis, Djamal Benslimane, Allel Hadjali, Majority-Rule-Based Web Service Selection , International Conference on Web Information Systems Engineering (WISE '12), November 28-30, 2012
Thanasis Vergoulis, Theodore Dalamagas, Dimitris Sacharidis, Timos Sellis, Approximate Regional Sequence Matching for Genomic Databases , International Journal on Very Large Data Bases, 2012
2011
George Tsatsanifos, Dimitris Sacharidis, Timos Sellis, MIDAS: Multi-Attribute Indexing for Distributed Architecture Systems , 12th International Symposium on Spatial and Temporal Databases (SSTD '11), August 24-26, 2011
Panagiotis Bouros, Dimitris Sacharidis, Theodore Dalamagas, Timos Sellis, Dynamic Pickup and Delivery with Transfers , 12th International Symposium on Spatial and Temporal Databases (SSTD '11), August 24-26, 2011
George Tsatsanifos, Dimitris Sacharidis, Timos Sellis, On Enhancing Scalability for Distributed RDF/S Stores , 14th International Conference on Extending Database Technology (EDBT '11), March 22-24, 2011
Panagiotis Bouros, Dimitris Sacharidis, Theodore Dalamagas, Spiros Skiadopoulos, Timos Sellis, Evaluating Path Queries over Frequently Updated Route Collections , IEEE Transactions on Knowledge and Data Engineering, 2011
2010
Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Timos Sellis, Ranking and Clustering Web Services using Multi-Criteria Dominance Relationships , IEEE Transactions on Services Computing, 2010
Dimitris Sacharidis, Anastasios Arvanitis, Timos Sellis, Probabilistic Contextual Skylines , 26th IEEE International Conference on Data Engineering (ICDE '10), March 1-6, 2010
Dimitris Sacharidis, Kyriakos Mouratidis, Dimitris Papadias, k-Anonymity in the Presence of External Databases , IEEE Transactions on Knowledge and Data Engineering, 2010 [code]
2009
Panagiotis Bouros, Spiros Skiadopoulos, Theodore Dalamagas, Dimitris Sacharidis, Timos Sellis, Evaluating reachability queries over path collections , 21st Conference on Scientific and Statistical Database Management (SSDBM '09), June 2-4, 2009
Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Verena Kantere, Timos Sellis, Top-k Dominant Web Services Under Multi-Criteria Matching , 12th International Conference on Extending Database Technology (EDBT '09), March 23-26, 2009
Dimitris Sacharidis, Stavros Papadopoulos, Dimitris Papadias, Topologically Sorted Skylines for Partially Ordered Domains , 25th IEEE International Conference on Data Engineering (ICDE '09), March 29 - April 4, 2009 [code]
Dimitris Sacharidis, Antonios Deligiannakis, Timos Sellis, Hierarchically Compressed Wavelet Synopses , International Journal on Very Large Data Bases, 2009
Kyriakos Mouratidis, Dimitris Sacharidis, HweeHwa Pang, Partially Materialized Digest Scheme: An Efficient Verification Method for Outsourced Databases , International Journal on Very Large Data Bases, 2009 [code]
2008
Dimitrios Skoutas, Dimitris Sacharidis, Verena Kantere, Timos Sellis, Efficient Semantic Web Service Discovery in Centralized and P2P Environments , 7th International Semantic Web Conference (ISWC '08), October 26-30, 2008
Dimitrios Skoutas, Dimitris Sacharidis, Alkis Simitsis, Timos Sellis, Serving the Sky: Discovering and Selecting Semantic Web Services through Dynamic Skyline Queries , 2nd IEEE International Conference on Semantic Computing (ICSC '08), August 4-7, 2008
Dimitris Sacharidis, Panagiotis Bouros, Timos Sellis, Caching Dynamic Skyline Queries , 20th Conference on Scientific and Statistical Database Management (SSDBM '08), July 9-11, 2008 [code]
Dimitris Sacharidis, Kostas Patroumpas, Manolis Terrovitis, Verena Kantere, Michalis Potamias, Kyriakos Mouratidis, Timos Sellis, On-Line Discovery of Hot Motion Paths , 11th International Conference on Extending Database Technology (EDBT '08), March 25-30, 2008 [slides]
2007
Panagiotis Karras, Dimitris Sacharidis, Nikos Mamoulis,Exploiting Duality in Summarization with Deterministic Guarantees , 13th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD '07), Aug 12-15, 2007
Stavros Papadopoulos, Dimitris Sacharidis, Kyriakos Mouratidis, Continuous Medoid Queries over Moving Objects , 10th International Symposium on Spatial and Temporal Databases (SSTD '07), Jul 16-18, 2007
2006
Michael Mathioudakis, Dimitris Sacharidis, Timos Sellis, A Study on Workload-Aware Wavelet Synopses , ACM Ninth International Workshop on Data Warehousing and OLAP (DOLAP '06), Nov 10, 2006 [michael's slides]
Dimitris Sacharidis, Constructing Optimal Wavelet Synopses , PhD Workshop of 10th International Conference on Extending Database Technology (EDBT '06), March 26, 2006 [slides]
Graham Cormode, Minos Garofalakis, Dimitris Sacharidis, Fast Approximate Wavelet Tracking on Streams , 10th International Conference on Extending Database Technology (EDBT '06), March 27-29, 2006 [slides]
2005
Mehrdad Jahangiri, Dimitris Sacharidis, Cyrus Shahabi, SHIFT-SPLIT: I/O Efficient Maintenance of Wavelet-Transformed Multidimensional Data , ACM SIGMOD International Conference on Management of Data (SIGMOD '05), June 14-16, 2005
Cyrus Shahabi, Mehrdad Jahangiri, Dimitris Sacharidis, Hybrid Query and Data Ordering for Fast and Progressive Range-Aggregate Query Answering , International Journal of Data Warehousing and Mining, April 2005
Cyrus Shahabi, Dimitris Sacharidis, Mehrdad Jahangiri, Wavelets for Querying Multidimensional Datasets, Encyclopedia of Data Warehousing and Mining , April 2005
