A holistic review on trust and reputation management systems for digital environments

Digital environments have generated tremendous benefits for various entities. Individuals and organizations have utilized these environments for performing transactions, sharing information, and engaging in collaboration. However, the benefits that digital environments offer also attract a number of dishonest entities. These entities perform malicious activities that further disadvantage other genuine entities. In order to mitigate this issue, a method to investigate the trustworthiness of entities in digital environments is needed prior to any transaction or collaboration. Such method should allow entities to gauge the trustworthiness of other entities. Therefore, this method could increase the confidence of the entities to perform the transaction or collaboration. In this paper, we focus at providing a holistic review on the current state of art in trust and reputation management system. Several existing works in trust models are discussed. In addition, several requirements for an appropriate trust model for digital environments are presented