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  • Reputační systémy byly navrženy pro vynucování bezpečnosti v prostředí, kde není možné registrovat nové uživatele. Použití důvěry ovšem přináší obtížné problémy, které odstrašují od používání důvěry pro bezpečnostní mechanismy. Schopnost měnit důvěry rychle, a efektivně reagovat na změny v prostředí a chování uživatelů je nezbytné pro rozumné používání mechanismů postavených na důvěře. Teorie Dempster-Shafer byla navržena jako vhodný teoretický model pro výpočet důvěry. V článku definujeme sadu požadavkků na důvěru a demonstrujeme, že DS teorie má v praxi velmi špatné vlastnosti.<br> (cs)
  • To enforce security without user enrollment, trust (or reputation) systems were proposed to use experience as crucial information to support cooperation as well as for security enforcement mechanisms. However, use of trust introduces very difficult problems that still discourage from exploitation of trust for security mechanisms. The ability to change trust quickly and react effectively to changes in environment and user behaviour is profound for usability of mechanisms built on top of trust. Dempster-SShafer theory was proposed as a suitable theoretical model for trust computation. Here, we define general requirements for reputation dynamics and demonstrate that Dempster-Shafer theory properties are not as good as is widely thought. On the contrary, simple formulae work.
  • To enforce security without user enrollment, trust (or reputation) systems were proposed to use experience as crucial information to support cooperation as well as for security enforcement mechanisms. However, use of trust introduces very difficult problems that still discourage from exploitation of trust for security mechanisms. The ability to change trust quickly and react effectively to changes in environment and user behaviour is profound for usability of mechanisms built on top of trust. Dempster-SShafer theory was proposed as a suitable theoretical model for trust computation. Here, we define general requirements for reputation dynamics and demonstrate that Dempster-Shafer theory properties are not as good as is widely thought. On the contrary, simple formulae work. (en)
Title
  • Dynamics of Reputation
  • Dynamics of Reputation (en)
  • Dynamika reputace (cs)
skos:prefLabel
  • Dynamics of Reputation
  • Dynamics of Reputation (en)
  • Dynamika reputace (cs)
skos:notation
  • RIV/00216305:26230/04:PU49347!RIV06-MSM-26230___
http://linked.open.../vavai/riv/strany
  • 1-7
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(1K04106), P(GA102/04/0871)
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
  • 561495
http://linked.open...ai/riv/idVysledku
  • RIV/00216305:26230/04:PU49347
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Reputation, trust, Dempster-Shafer theory, combining evidence (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [F6702DF9BE6E]
http://linked.open...v/mistoKonaniAkce
  • Helsinki
http://linked.open...i/riv/mistoVydani
  • Helsinki
http://linked.open...i/riv/nazevZdroje
  • NordSec'04
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Cvrček, Daniel
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • Helsinki University of Technology
http://localhost/t...ganizacniJednotka
  • 26230
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