Effects of Computational Mechanism Design in User Evaluation System

This paper describes the survey on electronic commerce and proposes a new user evaluation methods based on multi-criteria based rating system. In recent years, number of ecommerce users is increasing and a lot of untruthful trades are occurred. Although most of electronic commerce sites provide user evaluation systems, each user does not know the real item and the trading partner’s behavior in actual. In some cases, sellers do not lose a chance to sell the item because of lack of their and their items information. On the other hands, buyers sometimes can not make a decision to choose trading partner because the evaluation rating is not good, although electronic commerce site is looking good. To solve these problems, we propose a new evaluation system where sellers can set up and define the evaluation criteria and electronic commerce system evaluates sellers based on their behavior. We conducted some experiments with situation changing and show the result of simulation on the passage of sellers evaluations. Contributions of this research include providing basic concept of computational mechanism design in user evaluation system and showing experiment result where our proposed mechanism is employed.