Prof. Peter Vojtáš

vojtas<at>ksi.mff.cuni.cz
professor

Research topics

  • customer's preference learning
  • web semantization
  • real world challenge, models, methods, experimental prototypes, data (benchmarks), metrics, improvement, real world impact
  • mathematical fuzzy logic programming
  • Boolean algebra of absolutely divergent series with comparison test ordering, see http://www.ksi.mff.cuni.cz/~vojtas/WorkResultsChallenges/VojtasMathPublications.html
  • Galois-Tukey connections/reductions, see http://www.ksi.mff.cuni.cz/~vojtas/WorkResultsChallenges/VojtasMathPublications.html

Teachingtop

CodeTitleLinks
NDBI006Query Languages IIlink
NDBI021Customer preferenceslink
NDBI037Information Models with Orderinglink
NSWI108Web Semantizationlink
NSWI121Dissertation Thesis Preparation
NSWI122Dissertation Thesis Preparation
NSWI155Seminar on semantization and preferences I
NSWI156Seminar on semantization and preferences II

Ph.D. studentstop

Current: Štěpán Balcar, M.Sc.

Former: Jan Dědek, M.Sc., Alan Eckhardt, Ph.D., Ladislav Peška, M.Sc.

Supervised thesestop

TitleStudentTypeStartedDefended
User preferencesŠtěpán BalcarPh.D.2017
Web page data figure finderDominik JanataMS20152016
Content based Recommendation from Explicit RatingsMatej FerencMS20142016
Semantic annotation and querying RDF dataJakub KýpeťMS20132015
Information extraction from semistructured dataJán LučanskýMS2011
Recommender systems - models, methods, experimentsLadislav PeškaPh.D.20112016
User preferences in web service environmentOndřej MalýMS2011
Semantic annotation of domain dependent dataDominik FišerMS20102011
Acquiring user preferences for eshopZdeněk SmrčkaBS20102011
Universal Recommender SystemPetr CvengrošMS20102011
User preferences in the domain of web shopsLadislav PeškaMS20102011
Models of user preferences in e-shop environmentBranislav VáclavMS20092010
Visualization methods utilization for document searching by user preferencesPetr JenčekMS20092009
User anotation of web resources using microformatsJiří ToušekMS20092010
Semantic annotationsJan DědekPh.D.20072012
Information extraction from semistructured dataJán LučanskýMS2007
Support of unqualified user queryingDaniela DybalováMS2007
Induction of user preferences for semantic webAlan EckhardtPh.D.20062010
Preferencev querying, indexing, optimisationErik HorničákMS20062009
Preferencev querying, indexing, optimisationErik HorničákMS20062011
Theoretical aspect of modeling of user decisionPeter LackýMS20062009
Theoretical aspect of modeling of user decisionPeter LackýMS20062010
Semantic annotation of data from web resourcesJan DědekMS20062007
Ontology mapping and mining with user preferenceDušan MaruščákMS20052007
Methods for finding best answer with different user preferencesAlan EckhardtMS20052006

Research grantstop

  • Social Network of the Computer Scientists in the Regions of the Czech Republic (EU CZ1.07/2.4.00/12.0039) 2009-2012 head investigator
  • Semantization of the Web (GACR P202/10/0761) 2010-2012 head investigator
  • Res Informatica (GACR 201/09/H057) 2009-2012 cooperant
  • Processing of XML Data (GACR 201/09/0990) 2009-2011 cooperant
  • Modern Methods, Structures and Systems of Computer Science (MSMT MSM0021620838) 2005-2011 cooperant
  • (show all)

Selected publications (complete list)top

  • [Journal (without IF)]Peška L., Vojtáš P.: Using Implicit Preference Relations to Improve Recommender Systems, in Journal on Data Semantics, Vol. 6, Num. 1, ISSN: 1861-2032, pp. 15-30, 2017 - text
  • Peška L., Vojtáš P.: How to Interpret Implicit User Feedback?, in RecSys 2015 Poster Proceeding, Vienna, Austria, CEUR-WS.org, ISSN: 1613-0073, pp. nestránkováno, 2015 - text
  • [Journal (without IF)]Peška L., Lašek I., Eckhardt A., Dědek J., Vojtáš P., Dominik F.: Towards web semantization and user understanding, in Frontiers in Artificial Intelligence and Applications, Vol. 251, Num. January, ISSN: 0922-6389, pp. 63-81, 2013
  • [IF Journal]Dědek J., Vojtáš P., Vomlelová M.: Fuzzy ILP Classification of web reports after linguistic text mining, in Information Processing and Management, Vol. 48, Num. 3, ISSN: 0306-4573, pp. 438-450, 2012 - online
  • [Core A conference]Horváth T., Vojtáš P.: Ordinal Classification with Monotonicity Constraints, in Advances in Data Mining, Applications in Medicine, Web Mining, Marketing, Image and Signal Mining, 6th Industrial Conference on Data Mining, ICDM 2006, Leipzig, Germany, July 14-15, 2006, Proceedings, Springer, ISBN: 3-540-36036-0, pp. 217-225, 2006
  • [IF Journal]Krajči S., Lencses R., Vojtáš P.: A comparison of fuzzy and annotated logic programming, in FUZZY SETS AND SYSTEMS, Vol. 144, Num. 1, ISSN: 0165-0114, pp. 173-192, 2004
  • [IF Journal]Vojtáš P.: Fuzzy logic programming, in FUZZY SETS AND SYSTEMS, Vol. 124, Num. 3, Sp. Iss. SI, ISSN: 0165-0114, pp. 361-370, 2001

Software

CZsem, PrefWork, Semantic Annotator, Tokaf

Additional information

Contactstop

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