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Curriculum Vitae

Phone:   (+420) 221 914 227
Fax:       (+420) 221 914 323
E-mail:   lokoc (at) ksi (dot) mff (dot) cuni (dot) cz

  • Ph.D. in Software Systems (2010), 
    Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic,
    advisor Tomáš Skopal
  • RNDr. in Software Systems (2010),
    Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
  • Mgr. (MSc equivalent) in Computer Science (2005),
    Faculty of Science, Palacky University, Olomouc, Czech Republic
  • Bc. in Computer Science (2003)
    Faculty of Science, Palacky University, Olomouc, Czech Republic
  • databases : indexing, metric indexing, non-metric indexing
  • multimedia : feature extraction, similarity modeling, exploration, mental query retrieval

Assistant Professor (January 2012 - present)
Department of Software EngineeringSchool of Computer ScienceFMP,
Charles University in Prague

Researcher (September 2010 - December 2011)
Department of Software Engineering, School of Computer Science, FMP,
Charles University in Prague

Assistant Professor (September 2009 - July 2016)
Department of Computer Science and Mathematics, 
Lecturer (September 2007 - August 2009)
Department of Computer Science and Mathematics, 


M. Kruliš, T. Skopal. J. Lokoč, Ch. Beecks. Combining CPU and GPU Architectures for Fast Similarity Search, Distributed and Parallel Databases, Springer, 30(3), ISSN: 0926-8782, 2012
J. Lokoč, P. Čech, J. Novák, T. Skopal. Cut-region: A Compact Building Block For Hierarchical Metric Indexing, SISAP, Springer, LNCS 7404 ISBN: 978-3-642-32152-8, ISSN: 0302-9743, 2012
T. Skopal, J. Lokoč, B. Bustos. D-cache: Universal Distance Cache for Metric Access Methods, IEEE Transactions on Knowledge and Data Engineering, IEEE, 24(5), ISSN: 1041-4347, 2012
J. Lokoč, T. Grošup, T. Skopal. Image Exploration using Online Feature Extraction and Reranking, ACM ICMR, ACM, ISBN: 978-1-4503-1329-2, 2012
Ch. Beecks, J. Lokoč, T. Seidl, T. Skopal. Indexing the Signature Quadratic Form Distance for Efficient Content-Based Multimedia Retrieval, ACM ICMR, ACM, ISBN: 978-1-4503-0336-1, 2011
T. Skopal, J. Lokoč. New Dynamic Construction Techniques for M-tree, Journal of Discrete Algorithms, Elsevier, 7(1), ISSN: 1570-8667, 2009
T. Skopal, J. Lokoč. NM-tree: Flexible Approximate Similarity Search in Metric and Non-metric Spaces, DEXA, Springer, LNCS 5181 ISBN: 978-3-540-85653-5, 2008
T. Skopal, T. Bartoš, J. Lokoč. On (not) indexing quadratic form distance by metric access methods, EDBT, ACM, ISBN: 978-1-4503-0528-0, 2011
M. Kruliš, J. Lokoč, Ch. Beecks, T. Skopal, T. Seidl. Processing Signature Quadratic Form Distance on Many-Core GPU Architecture, CIKM, ACM, ISBN: 978-1-4503-0717-8, 2011
M.L. Hetland, T. Skopal. J. Lokoč, Ch. Beecks. Ptolemaic Access Methods: Challenging the Reign of the Metric Space Model, Information Systems, Elsevier, 38(7), ISSN: 0306-4379, 2013
J. Lokoč, J. Wuenschmann, A. Rothermel, T. Skopal. Similarity Search in 3D Object-Based Video Data, CIKM, ACM, ISBN: 978-1-4503-1156-4, 2012
  • Founding member of SIRET Research Group


  • SISAP 2008 - 2018
  • CBMI 2015, 2016
  • VBS 2015 - 2018
  • EDBT 2010
  • DKE Journal 2014
  • MMM 2015
  • SISAP 2009
  • CBMI 2015

Charles University in Prague, Prague, Czech Republic
Teaching Asistant (September 2006 – present)

  • Transactions
  • Database Systems
Lecturer (September 2007 - July 2016)
  • Database systems, Computer Graphics, Application Software


1st place at the Video Browser Showdown, 2018

3rd place at the Video Browser Showdown, 2016 and 2017

1st place at the Video Search Showcase, 2015

Three month research scholarship from the AKTION Czech Republic - Austria, 2014

1st place at the Video Browser Showdown, 2014

4th position at the Joseph Fourier competition in computational sciences, 2011.

Programming Languages:

  • C, C++, C#, VB .NET, ASP.NET, JavaScript, PHP, T-SQL
  • Microsoft SQL Server (TSQL programming, administration)