General Implementation of top-k Algorithm

Alan Eckhardt, Peter Vojtáš


Project Tokaf is an general implementation of top-k algorithm. It provides interfaces for all modules that are needed. It also features user preferences module, for computing new preferences and manipulating existing ones.

Where to get it

Tokaf is open-source and is therefore freely accessible. Users are welcome with their feedback.


Contact email:



Research group at the department:

Web Semantization Research Group

Supporting research projects and grants:

AV CR 1ET100300517, MSMT MSM0021620838


  • Eckhardt A., Pokorný J., Vojtáš P.: A system recommending top-k objects for multiple users preferences, in 2007 IEEE Conference on Fuzzy Systems, ISBN: 978-1-4244-1209-9, ISSN: 1098-7584, pp. 1101-1106, July 2007
  • Eckhardt A., Pokorný J., Vojtáš P.: Integrating user and group preferences for top-k search, in Database and Expert Systems Applications, IEEE, ISBN: 978-0-7695-2932-5, ISSN: 1529-4188, pp. 317-322, September 2007
  • Eckhardt A., Vojtáš P.: Uživatelské preference při vyhledávání ve webovských zdrojích, in Znalosti 2007, VSB-TU Ostrava, VSB-TY Ostrava, ISBN: 978-80-248-1279-3, pp. 179-190, February 2007 - WWW
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