Publication detail

Dynamics of Reputation

CVRČEK, D.

Original Title

Dynamics of Reputation

Type

conference paper

Language

English

Original Abstract

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-Shafer 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.

Keywords

Reputation, trust, Dempster-Shafer theory, combining evidence

Authors

CVRČEK, D.

RIV year

2004

Released

14. 9. 2004

Publisher

Helsinki University of Technology

Location

Helsinki

ISBN

1455-9749

Periodical

Publications in Telecommunication Software and Multimedia

Number

9

State

Republic of Finland

Pages from

1

Pages to

7

Pages count

7

BibTex

@inproceedings{BUT17600,
  author="Daniel {Cvrček}",
  title="Dynamics of Reputation",
  booktitle="NordSec'04",
  year="2004",
  series="Publications in Telecommunications Software and Multimedia",
  journal="Publications in Telecommunication Software and Multimedia",
  number="9",
  pages="1--7",
  publisher="Helsinki University of Technology",
  address="Helsinki",
  issn="1455-9749"
}