Panagiotis Papapetrou



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Panagiotis Papapetrou, Ph.D.

Aalto University, School of Science
Department of Information and Computer Science

Konemiehentie 2, Espoo, Room B331
P.O. Box 15400, FI-00076 Aalto, Finland

Office Tel: +358 9 470 23282
Mobile Tel: +358 50 529 7850
E-mail: panagiotis.papapetrou@aalto.fi

Research Interests News:

Currently:

an image Postdoctoral researcher at the Department of Information and Computer Science at Aalto University School of Science and Technology, Also, affiliated with ALGODAN and HIIT. My superior is Prof. Heikki Mannila.

Research Interests:

Research Interests My research interests include: algorithmic data analysis and data mining, analysis of citation networks and bibliometrics, subsequence matching, indexing non-metric spaces, and visual analytics.

Publications:

For a complete listing of my publications click here.

Peer-reviewed publications:
2012
  • Panagiotis Papapetrou, Gary Benson, and George Kollios, "Mining Poly-regions in DNA". In the International Journal of Data Mining and Bioinformatics (IJDMB), 2012. (To Appear) [pdf]
2011
  • Panagiotis Papapetrou, Luiz Augusto Pizzato, Aristides Gionis, Xiongcai Cai, "Proceedings of the IEEE ICDM Workshop on Community Mining and People Recommenders", December 2011.
  • Panagiotis Papapetrou, Vassilis Athitsos, Michalis Potamias, George Kollios, and Dimitrios Gunopulos, "Embedding-based Subsequence Matching in Time Series Databases". In ACM Transactions on Database Systems (TODS), Volume 36, No. 3, Article 17, August 2011. [pdf]
  • Alexios Kotsifakos, Panagiotis Papapetrou, Jaakko Hollmen, and Dimitrios Gunopulos, "A Subsequence Matching with Gaps-Range-Tolerances Framework: A Query-By-Humming Application". In Proceedings of the Very Large DataBases Endowement (PVLDB), Volume 4, Issue 11, pages 761-771, 2011. [pdf]
  • Panagiotis Papapetrou, Aristides Gionis, and Heikki Mannila, "A Shapley-value Approach for Influence Attribution". In Proc. of the European Conference of Machine Learning and Principles and Practices of Knowledge Discovery in Databases (ECML PKDD), pages 549-564, September 2011. [pdf]
  • Jefrey Lijffijt, Panagiotis Papapetrou, Kai Puolamaki, and Heikki Mannila, "Analyzing Word Frequencies in Large Text Corpora using Inter-arrival Times and Bootstrapping". In Proc. of the European Conference of Machine Learning and Principles and Practices of Knowledge Discovery in Databases (ECML PKDD), pages 341-357, September 2011. [pdf]
  • Orestis Kostakis, Panagiotis Papapetrou, and Jaakko Hollmen, "Artemis: Assessing the Similarity of Event-Interval Sequences". In Proc. of the European Conference of Machine Learning and Principles and Practices of Knowledge Discovery in Databases (ECML PKDD), pages 229-244, September 2011. [pdf]
  • Alexios Kotsifakos, Vassilis Athitsos, Panagiotis Papapetrou, Jaakko Hollmen, and Dimitrios Gunopulos, "Model-based search in large time series databases". In Proc. of Pervasive Technologies Related to Assistive Environments (PETRA), May 2011.
  • Orestis Kostakis, Panagiotis Papapetrou, and Jaakko Hollmen, "Distance Measure for Querying Arrangements of Temporal Intervals". In Proc. of Pervasive Technologies Related to Assistive Environments (PETRA), May 2011. [pdf]
2010
  • Kai Puolamaki, Panagiotis Papapetrou, and Jefrey Lijffijt, "Visually-Controllable Data Mining Methods". In Proc. of the IEEE International Conference on Data Mining Workshop, (ICDM VAKD) December 2010, Sydney, Australia. [pdf]
  • Kai Puolamaki, Alessio Bertone, Roberto Theron, Otto Huisman, Jimmy Johansson, Silvia Miksch, Panagiotis Papapetrou, and Salvo Rinzivillo, "Mastering the Information Age Solving Problems with Visual Analytics, chapter Data Mining, pages 39-56. Eurographics Association, 2010.
  • Jefrey Lijffijt, Panagiotis Papapetrou, Jaakko Hollmen, and Vassilis Athitsos, "Benchmarking dynamic time warping for music retrieval". In Proc. of Pervasive Technologies Related to Assistive Environments (PETRA), June 2010, Samos, Greece. [pdf]
  • Jefrey Lijffijt, Panagiotis Papapetrou, and Jaakko Hollmen, "Tracking your steps on the track: Body sensor recordings of a controlled walking experiment". In Proc. of Pervasive Technologies Related to Assistive Environments (PETRA), June 2010, Samos, Greece. [pdf]
2009
  • Panagiotis Papapetrou, George Kollios, Stan Sclaroff, and Dimitrios Gunopulos, "Mining Frequent Arrangements of Temporal Intervals". In Knowledge and Information Systems (KAIS), Volume 21, Issue 2 (2009), Pages 133-171. [pdf]
  • Panagiotis Papapetrou, Vassilis Athitsos, George Kollios, and Dimitrios Gunopulos, "Reference-Based Alignment in Large Sequence Databases", In Proceedings of the Very Large DataBases Endowment (PVLDB), Volume 2, Issue 1 (2009), Pages 205-216. [pdf][Oral presentation in VLDB 2009: ppt]
  • Panagiotis Papapetrou, Paul Doliotis and Vassilis Athitsos, "Towards Faster Activity Search Using Embedding-based Subsequence Matching", In Proc. of Pervasive Technologies Related to Assistive Environments (PETRA), June 2009, Corfu, Greece. [pdf]
2008
2006
  • Panagiotis Papapetrou, Gary Benson, and George Kollios, "Discovering Frequent Poly-Regions in DNA Sequences". In Proc. of the IEEE International Conference on Data Mining Workshop on Data Mining in Bioinformatics (ICDM DMB), December 2006, Hong Kong. [pdf] [Full Version: pdf ][talk slides in ppt]
2005
  • Panagiotis Papapetrou, George Kollios, Stan Sclaroff, and Dimitrios Gunopulos, "Discovering Frequent Arrangements of Temporal Intervals". In Proc. of the IEEE International Conference on Data Mining (ICDM), November 2005, Houston, Texas, USA. [pdf] [talk slides in ppt]
Technical Reports:
2010
  • Jefrey Lijffijt, Panagiotis Papapetrou, Niko Vuokko, and Kai Puolamaki. "The smallest set of constraints that explains the data: a randomization approach". TKK-ICS-R31, TKK Reports in Information and Computer Science, Espoo, 2010.
2008
  • Panagiotis Papapetrou, Gary Benson, and George Kollios, "Generalized Methods for Discovering Frequent Poly-Regions in DNA Sequences".Technical Report, Department of Computer Science, Boston University, October 21, 2008.
2006
  • Ching Chang, Raymond Sweha, Panagiotis Papapetrou, "Extending snBench to Support a Graphical Programming Interface for a Sensor Network Tasking Language (STEP)". Technical Report, Department of Computer Science, Boston University, July 14, 2006. [pdf] [Web-site]
Theses:
2010
  • "Embedding-based Subsequence Matching in Large Sequence Databases", Ph.D. Thesis [pdf][defense slides in ppt]
2007
  • "Constraint-based Mining of Frequent Arrangements of Temporal Intervals", M.A. Thesis [pdf] [defense slides in ppt]
2004
  • "Discovering Aggregate Usage Profiles using Clustering Methods", B.Sc. Thesis [zip] (in Greek only)

Education:

Brief Bio:

  • September 2009 - present: Postdoctoral Researcher at the Department of Information and Computer Science, School of Science, Aalto University, Finland.
  • June 2009: Received Ph.D. in Computer Science.
  • September 2006: Received M.A. in Computer Science.
  • January 2004: Admitted to the MA/PhD Program of the Department of Computer Science at Boston University, USA.
  • June 2003: Received B.Sc. in Computer Science.
  • September 1999: Admitted to the Department of Computer Science, University of Ioannina, Greece.
  • September 1982: Moved to the city of Ioannina, my home-town (Northwest of Greece).
  • July 1981: God made a mistake and brought me to the world in Patra, Greece.

Professional Activities:

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