Expectation trust model based on behaviors and values

In virtual network society, trust of computer user takes an important role in transactions. Existing trust model focus on the study of the next transaction decision making based on past behavior. While the cost of next transaction is seldom be taken as a consideration. In this paper, we proposed a novel trust model based on both expression of past transactions and the next transaction, especially make use of the cost of next transaction as an important consideration in trust prediction. The simulation shows that the next cost play an important role in the future transactions.