Evaluations of a core broking model from the viewpoint of online group trading

A new Core Broking Model (CBM) is proposed to resolve group trading problems in e-markets. The aim of this paper is to evaluate the new model from the viewpoint of online group trading. A simulation system for the evaluations of new model was used to generate test data and to produce outputs from the core and the CBM. The results show that the CBM is superior to the core in distributed computing, computational complexity, and incentive compatibility when applied in e-markets. They demonstrate that the CBM can attract customers and deal with online group trading problems effectively in a large coalition. An extensive evaluation of the CBM has been made and shows that the additional techniques in the CBM have all successfully produced the desired result.