Currently:

Postdoctoral Researcher at the Helsinki Insitute for Information Technology (HIIT), Helsinki University of Technology (TKK), Helsinki, Finland.

Supervisor: Prof. Heikki Mannila.

Publications:

  Journals:

• Panagiotis Papapetrou, George Kollios, Stan Sclaroff, and Dimitrios Gunopulos. “Mining Frequent Arrangements of Temporal Intervals”. Knowledge and Information Systems (KAIS), Volume 21, Issue 2 (2009), Page 133. [pdf]

  Conference papers:

• Panagiotis Papapetrou, Vassilis Athitsos, George Kollios, and Dimitrios Gunopulos, "Reference-Based Alignment in Large Sequence Databases", In Proc. of VLDB, August 2009, Lyon, France. [pdf][talk slides in ppt]

• Panagiotis Papapetrou, Paul Doliotis and Vassilis Athitsos, "Towards Faster Activity Search Using Embedding-based Subsequence Matching", In Proc. of the PETRA 2009 Workshop on Multimedia Event Analysis for Assistive Environments (EventAnalysis), June 2009, Corfu, Greece. [pdf]

• Vassilis Athitsos, Panagiotis Papapetrou, Michalis Potamias, George Kollios, and Dimitrios Gunopulos "Approximate Embedding-Based Subsequence Matching of Time Series". In Proc. of ACM SIGMOD, June 2008, Vancouver, Canada. [pdf]

• Vassilis Athitsos, Michalis Potamias, Panagiotis Papapetrou, and George Kollios. "Nearest Neighbor Retrieval Using Distance-Based Hashing". In Proc.of IEEE ICDE, April 2008, Cancun, Mexico. [pdf]

• Panagiotis Papapetrou, Gary Benson, and George Kollios. "Discovering Frequent Poly-Regions in DNA Sequences". In Proc. of the IEEE ICDM Workshop on Data Mining in Bioinformatics (DMB), December 2006, Hong Kong. [pdf] [Full Version: pdf ][talk slides in ppt]

• Panagiotis Papapetrou, George Kollios, Stan Sclaroff, and Dimitrios Gunopulos. "Discovering Frequent Arrangements of Temporal Intervals". In Proc. of IEEE ICDM, Houston, Texas, USA, November 2005. [pdf] [talk slides in ppt]

  Technical Reports:

• 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. [pdf]

• 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:

• " Embedding-based Subsequence Matching in Large Sequence Databases", Ph.D. Thesis [pdf][defense slides in ppt]

• "Constraint-based Mining of Frequent Arrangements of Temporal Intervals", M.A. Thesis [pdf] [defense slides in ppt]

• "Discovering Aggregate Usage Profiles using Clustering Methods", B.Sc. Thesis [zip] (in Greek only)

Education:

• July 2009: Ph.D. (Computer Science),  Department of Computer Science, Boston University.

Thesis Title: "Embedding-based Subsequence Matching in Large Sequence Databases". [defense slides in ppt]

Advisor: Prof. George Kollios.
Co-Advisor: Prof. Vassilis Athitsos.

• September 2006: M.A. (Computer Science),  Department of Computer Science, Boston University.

Thesis Title: "Constraint-based Mining of Frequent Arrangements of Temporal Intervals". [defense slides in ppt]

Advisor: Prof. George Kollios.

• July 2003: B.Sc. (Computer Science),  Department of Computer Science, University of Ioannina, Greece.

B.Sc. Thesis Title: "Discovering Aggregate Usage Profiles in the Web using Clustering Methods". [Greek Version]

Advisor: Prof. Dimitrios Fotiadis.

Brief Bio:

• September 2009 - present: Postdoctoral Researcher at the Helsinki University of Technology.

• 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 the city of Patra, Greece.

Professional Activities:

• Program Committee Memberships:

  • 20th IEEE Conference on Scientific and Statistical Database Management (SSDBM), 2010.

• Project Developer at the Medical Technology and Software Development Unit, (2001-2003).

• Member of the IEEE Computer Society.

• External reviewer for the following conferences:

  • VLDB (2009).

  • CIKM(2006, 2009).

  • ICDM (2005, 2006).

  • KDD (2006, 2008).

  • DASFAA (2004).

• Reviewer for the TKDE Journal (2009).