First, the construction of the basic principles of index system
1, the principle of purpose
2, the principle of comprehensiveness
3, the principle feasibility
4, the principle of stability
5, the principle of coordination
6, the principle of binding
Second, the index system in dilemma
Dilemma between independence and comprehensiveness of the index
Third, several quantitative Construction Indicator System
1, the variation coefficient method
Generally, the variable dispersion, which contains a greater amount of information, and vice versa.
2, entropy method
Entropy represents a greater orderliness orderly system, the system, the greater the entropy, on the contrary, the smaller the orderliness of a system, the smaller the entropy
3, the correlation coefficient method
Overlap between the information indicator could be generally correlation coefficient between the index of the reaction, if the correlation coefficient between the two indicators overlap between the information closer to 1, the more serious the two indicators overlap, if equal to 0, no overlay information, If the correlation coefficient between two variables is negative, then no overlap between them information. Because the index reflects the overlapping information elements on the index connotation overlap, since the two indicators change direction away inverse relationship
they each contain the elements are heterogeneous, no information at all overlap.
4, conditions of generalized minimum variance method
Variance is a measure of the degree of dispersion of the one-dimensional random variable statistical indicators, generalized variance is a measure of the degree of dispersion of the overall index multidimensional random variables, which allows you to select indicator variables
4, no great correlation method
First, from the candidate index group, excluding those one by one the high degree of correlation with other indicators index, the second is to start from a single index, introduced one by one the low degree of correlation with other indicators index
Reference Links: https://wenku.baidu.com/view/31178c466c175f0e7cd137f4.html