Towards a Unified Framework for Computational Trust and Reputation Models for e-Commerce Applications.

Evaluating the quality of resources and the reliability of entities in a system is one of the current needs of modern computer systems. This assessment is the result of two concepts that dominate our real life as well as computer systems, which are Trust and Reputation. To measure them, a variety of computational models have been developed to help users make decisions, and to improve interactions with the system and between users. Due to the wide variety of definitions for reputation and trust topics, this paper attempts to unify these definitions by proposing a unique formalization in terms of graphical and textual notations. It introduces also a deep analysis to understand the behavior and the intuition behind each computational model.