Th is work was supported by the National Natural Science Foundation of China (Grant Nos. 70171053. 70271070,70471033& 10472ll61);the Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP No.20020358009); the Foundation for Graduate Students of University of Science and Tech—nology of China(Grant No.KD 200408).
Starting with the self-organized evolution of the trader group’s structure, a parsimonious percolation model for stock market is established, which can be considered as a kind of betterment of the Cont-Bouchaud model...