Abstract: IBS evidence theory widely used in the information fusion field was introduced into network evaluation area. Faking the network application as guide, we selected the KPI which mainly bears application in the evaluated network as indicator-level information input. An Internet quality evaluation hierarchical structure was established by using AHP method to assign basic probability. The two-level IBS structure was used to fuse evidence to get the network duality e- valuation results. The calculated results show the model using two levels of IBS structure to fuse evidence eliminates the uncertainty at a great extent. Furthermore, it has good practicality.

Key words: Quality of IP network, Data fusion, Dempster-shafer theory of evidence, Uncertainty measurement, Analytic hierarchy process