Dimitrios Theodoratos

Associate Professor, Computer Science
Education
Ph.D.; University of Paris at Orsay; Computer Science; 1991
M.S.; Ecole Nationale Superieure de Tellecommunications de Paris; Computer Science; 1986
Diploma; National Technical University of Athens; Iploma Electrical And Computer Engineering; 1985
2026 Fall Courses
CS 631 - DATA MGT SYSTEMS DESIGN
CS 726 - INDEPENDENT STUDY II
CS 701B - MASTER'S THESIS
CS 488 - INDEPENDENT STUDY IN CS
CS 700B - MASTER'S PROJECT
CS 725 - INDEPENDENT STUDY I
CS 489 - COMPUTER SCIENCE RESEARCH PROJ
CS 790A - DOCT DISSERTATION & RES
CS 792 - PRE-DOCTORAL RESEARCH
CS 331 - DATABASE SYSTEM DESIGN & MGMT - HONORS
Past Courses
CS 331: DATABASE SYSTEM DESIGN & MGMT
CS 431: INTRO DATABASE SYSTEMS
CS 434: ADVANCED DATABASE SYSTEMS
CS 631: DATA MANAGEMENT SYSTEM DESIGN
CS 631: DATA MGT SYSTEMS DESIGN
CS 632: ADV DATABASE SYS DESIGN
Journal Article
Xiaoying Wu, Dimitrios Theodoratos, Dimitrios Skoutas, Michael Lan. 2023. "A novel framework for the efficient evaluation of hybrid tree-pattern queries on large data graphs.." Information Systems, Elsevier, ScienceDirect, vol. 117, pp. 30.
Xiaoying Wu, Dimitrios Theodoratos, Nikos Mamoulis. 2021. "Discovering closed and maximal embedded patterns from large tree data.." Data and Knowledge Engineering-journal- Elsevier, vol. 133, pp. 32 pages.
Ananya Dass, Cem Aksoy, Aggeliki Dimitriou, Dimitrios Theodoratos. 2017. "Relaxation of Keyword Pattern Graphs on RDF Data." Journal of Web Engineering (JWE), Rinton Press, pp. 36 pages (363-398).
Xiaoying Wu, Dimitrios Theodoratos. 2016. "Homomorphic Pattern Mining from a Single Large Data Tree. ." Data Science and Engineering Journal (DSEJ), Springer, pp. 16 pages (203-218).
Xiaoying Wu, Dimitrios Theodoratos. 2016. "Template-based Bitmap View Selection for Optimizing Queries over Tree Data.." International Journal of Cooperative Information Systems (IJCIS), World Scientific, vol. 25, no. 3, pp. 28 pages (1-28).
Cem Aksoy, Aggeliki Dimitriou, Dimitrios Theodoratos. 2015. "Reasoning with Patterns to Effectively Answer XML Keyword Queries." Very Large Databases Journal (VLDBJ), Publisher: Springer, vol. 24, no. 3, pp. 441-465.
Conference Paper
"Evaluating Hybrid Graph Pattern Queries Using Runtime Index Graphs."
Proceedings 26th International Conference on Extending Database Technology (EDBT 2023), OpenProceedings, March, 2023.
"Efficient In-Memory Evaluation of Reachability Graph Pattern Queries on Data Graphs"
27th International Conference on Database Systems for Advanced Applications, Springer, April (2nd Quarter/Spring), 2022.
"Answering Graph Pattern Queries using Compact Materialized Views."
Proceedings of the 24th International Workshop on Design, Optimization, Languages and Analytical Processing of Big Data (DOLAP), CEUR Workshop Proceedings, March, 2022.
Conference Proceeding
"Leveraging Double Simulation to Efficiently Evaluate Hybrid Patterns on Data Graphs"
21st International Conference on Web Information Systems Engineering (WISE), Lecture Notes in Computer Science. Proceedings Publisher: Springer, November, 2020.
"Exploring Citation Networks with Hybrid Tree Pattern Queries."
ADBIS/TPDL/EDA Workshops. Proceedings Publisher: Springer, September, 2020.
"Leveraging Pattern Mining Techniques for Efficient Keyword Search on Data Graphs"
Proceedings of the The International Workshop on Web Information Systems in the Era of AI, Springer, January (1st Quarter/Winter), 2020.
"Efficiently Computing Homomorphic Matches of Hybrid Pattern Queries on Large Graphs."
Proceedings of the 24th International Conference on Database Systems for Advanced Applications, Springer, September, 2019.
"Evaluating Mixed Patterns on Large Data Graphs Using Bitmap Views"
Proceedings of the 24th International Conference on Database Systems for Advanced Applications, Springer, September, 2019.
"Trading Off Popularity for Diversity in the Results Sets of Keyword Queries on Linked Data."
Proceedings of the 17th International Conference on Web Engineering, Springer, June, 2017.