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Description
  • We define a data model, which enables to answer queries over crisp data using fuzzy knowledge base, fuzzy interpretation of vague expressions and fuzzy similarities. We present an extension of a positive relational algebra and show that its the expressive power together with a fuzzy fixpoint operator is sufficient for evaluating fuzzy Datalog programs. We discuss also a computational model for queries with a threshold on truth values and optimiyation of such queries.
  • We define a data model, which enables to answer queries over crisp data using fuzzy knowledge base, fuzzy interpretation of vague expressions and fuzzy similarities. We present an extension of a positive relational algebra and show that its the expressive power together with a fuzzy fixpoint operator is sufficient for evaluating fuzzy Datalog programs. We discuss also a computational model for queries with a threshold on truth values and optimiyation of such queries. (en)
Title
  • A Data Model for Flexible Querying.
  • A Data Model for Flexible Querying. (en)
skos:prefLabel
  • A Data Model for Flexible Querying.
  • A Data Model for Flexible Querying. (en)
skos:notation
  • RIV/67985807:_____/01:06020203!RIV/2003/AV0/A06003/N
http://linked.open.../vavai/riv/strany
  • 280;293
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA201/00/1031), Z(AV0Z1030915), Z(MSM 113200006), Z(MSM 212300014)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 672103
http://linked.open...ai/riv/idVysledku
  • RIV/67985807:_____/01:06020203
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • flexible querying; vague linguistic expressions; fuzzy Datalog; fuzzy similarities; fuzzy relational algebra; treshold computation (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [7BB5DE3DFA17]
http://linked.open...v/mistoKonaniAkce
  • Vilnius [LT]
http://linked.open...i/riv/mistoVydani
  • Berlin
http://linked.open...i/riv/nazevZdroje
  • Advances in Databases and Information Systems.
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...ocetUcastnikuAkce
http://linked.open...nichUcastnikuAkce
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Pokorný, J.
  • Vojtáš, Peter
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
http://linked.open...n/vavai/riv/zamer
number of pages
http://purl.org/ne...btex#hasPublisher
  • Springer-Verlag
https://schema.org/isbn
  • 3-540-42555-1
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