A Behaviour-Based Trust Model for Service Web
Surya Nepal (CSIRO ICT Centre)
CSIRO ICTDATE: 2010-04-22
TIME: 14:00:00 - 15:00:00
LOCATION: S206 CSIRO DCS Building
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ABSTRACT:
Reputation based trust models have been proposed for the Service Web, where reputation of a service is defined as the collective perception of consumers that have interacted with the service in the past. Existing reputation based trust models capture consumers' perception of the service through feedback scores against a set of quality of service parameters. Though the feedback based models are proven to be good in electronic commerce, they have known drawbacks such as such as dishonest rating, retaliation, reciprocation and reputation milking. There are many solutions proposed towards addressing these shortcomings. One of the important aspects of the reputation is that "it takes years to build a reputation and minutes to ruin it". The feedback based mechanism is not good to capture this aspect of reputation. In order to address this problem in the Service Web, this talk presents a novel reputation based trust model based on the behaviour of interacting services. The proposed model is based on the BOLTZMANN- like behaviour model in a social field and considers behaviour of both consumers and providers. The underlying assumption is that the behaviour of services in the Service Web shows some analogies with the behaviour of individuals under the influence of social field, which in turn shows some analogies with the physical model for the behaviour of electrons in electronic field. The talk discusses the model and its pros and cons.
BIO:
Dr. Surya Nepal is a Principal Research Scientist working on trust and security aspects of Web Services at CSIRO ICT Centre. His main research interest is in the development and implementation of technologies in the area of Web Services and Service-Oriented Architectures. He obtained his BE from Regional Engineering college, Surat, India (currently known as National Institute of Technology), ME from Asian Institute of Technology, Bangkok, Thailand and PhD from RMIT University, Australia. At CSIRO, Surya undertook research in the area of multimedia databases, Web Services and Service-Oriented Architectures, and security, privacy and trust in collaborative environment. He has also edited a book on "Managing Multimedia Semantics". He has several journal and conference papers in these areas to his credit.
