for interactions. We believe that this problem can be solved by assigning trust values to
entities and allowing them to state opinions about the trust-worthiness of others. In this
paper, we develop a new trust model, called Certain Trust, which can easily be interpreted
and adjusted by users and software agents. A key feature of Certain Trust is that it is capable
of expressing the certainty of a trust opinion, depending on the context of use. We show how …