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Orestis Kostakis

M.Sc. (Tech.), Doctoral Researcher

Room T-A342 in Computer Science Building,
Konemiehentie 2, Otaniemi campus area, Espoo
Postal Address:
Aalto University School of Science,
Department of Information and Computer Science,
P.O. Box 15400, FI-00076 Aalto, Finland

About Me

I'm a doctoral researcher in the Data Mining group led by Prof. Aristides Gionis.
My research interests include Data Mining, Algorithm Design and Computer Security.

During the Spring 2016 semester, I'm TA for the "Modern Database Systems" course.

Curriculum Vitae



Peer-Reviewed Journal Papers

  1. O. Kostakis, A. Gionis, N. Tatti. "Discovering recurring activity in temporal networks", Journal of Data Mining and Knowledge Discovery (DMKD), in press.
  2. O. Kostakis, P. Papapetrou. "Finding the Longest Common Sub-Pattern in Sequences of Temporal Intervals", Journal of Data Mining and Knowledge Discovery (DMKD), 2015.
  3. O. Kostakis. Classy: Fast Clustering Streams of Call-Graphs, Journal of Data Mining and Knowledge Discovery (DMKD), 2014.
  4. J. Kinable, O. Kostakis. Malware Classification based on Call Graph Clustering, Journal in Computer Virology, 2011.

Peer-Reviewed Conference Papers

  1. O. Kostakis, A.Gionis. Subsequence Search in Event-Interval Sequences". In Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR), 2015.
  2. O. Kostakis, P. Papapetrou, and J. Hollmén. Artemis: Assessing the similarity of event-interval sequences. In Proceedings of The European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML PKDD), 2011.
  3. O. Kostakis, P. Papapetrou, and J. Hollmén. Distance measure for querying arrangements of temporal intervals. In Proceedings of 4th International Conference on Pervasive Technologies Related to Assistive Environments (PETRA), 2011.
  4. O. Kostakis, J. Kinable, H. Mahmoudi, K. Mustonen. Improved Call Graph comparison using Simulated Annealing. In Proceedings of 26th ACM Symposium On Applied Computing (ACM SAC), 2011.

Selected Talks

Awards and Honours