TY  - CHAP
N2  - Reputation systems are nowadays widely used to support decision making in networked systems. Parties in such systems rate each other and use shared ratings to compute reputation scores that drive their interactions. The existence of reputation systems with remarkable differences calls for formal approaches to their analysis. We present a verification methodology for reputation systems that is based on the use of the coordination language Klaim and related analysis tools. First, we define a parametric Klaim specification of a reputation system that can be instantiated with different reputation models. Then, we consider stochastic specification obtained by considering actions with random (exponentially distributed) duration. The resulting specification enables quantitative analysis of properties of the considered system. Feasibility and effectiveness of our proposal is demonstrated by reporting on the analysis of two reputation models.
TI  - Specifying and analysing reputation systems with coordination languages
SP  - 1363
EP  - 1368 
ID  - eprints1571
SN  - 978-1-4503-1656-9
AV  - public
N1  - SAC '13, Coimbra, Portugal ? March 18 - 22, 2013 
KW  - Categories and Subject Descriptors: H.4 [Information Systems Applications]: Reputation systems; F.3 [Theory of computation]: Specifying and Verifying and Reasoning about Programs
T2  - Proceedings of the 28th Annual ACM symposium on applied computing
PB  - ACM
Y1  - 2013///
A1  - Celestini, Alessandro
A1  - De Nicola, Rocco
A1  - Tiezzi, Francesco
UR  - http://dl.acm.org/citation.cfm?id=2480618&CFID=404444698&CFTOKEN=59891405
ER  -