In many electronic commerce systems, detecting significant clusters is of great value to the
analysis, design, and optimization of the commerce behaviors. In this article, we propose a
new dynamical approach to detect the cluster configuration fast and accurately which can be
applied to electronic commerce systems. First, we analyze the two-stage game in which the
leader group members make contributions prior to the follower group, and propose an exact
index, ie, the leadership, to characterize the key leaders. Then an efficient dynamical system …