Establishing hierarchy structure in complex systems based on the integration of DEMATEL and ISM

Establishing hierarchy structure is generally the foundation of the analysis of complex systems.To make the hierarchy structures of the complex systems illustrative and reasonable,a new method is first pro- posed to establish the hierarchy structures for complex systems based on the integration of DEMATEL and ISM after the theoretical foundation and corresponding steps of the integration are analyzed;and then the concept of dummy node is advanced to improve on the hierarchy structures of the complex systems;finally an example is used to illustrate the methods mentioned above.Through the integration algorithm mentioned in the paper,the rearchability matrix of ISM can be obtained easily.