The Improvement of DI and Research for Precision-comparison between DI and CI in the Early Warning System of Real Estate
Lieyun Ding · Systems Engineering - Theory & Practice · 2003
The Prosperity Index method,including the diffusion index (DI) and the composite index \$\{(CI)\}\$,is a common approach to analysis the early warning. Practically, there exist some problems such as the disaccord of the warning degree between the DI and CI, leading to the error of the warning condition appraisal. In this article, based on the suitable improvement to the calculation method of the DI, the concept of comparison of the precision in the Early Warning System of Real Estate has been introduced and the more scientific early warning index can be chosen by means of comparing the precision of the two indexes (DI and CI) in order to eliminate the contradiction between the two indexes.