(1) Standardization of the original data: There are R indicators in the original data, the sample size is C, and the sample matrix obtained is as shown in equation (1). Normalization of equation (1) can be obtained as shown below Standardization matrix:
(1) Standardization of original data: there are R indicators in the original data, and the sample size is C, and the sample matrix obtained is shown in equation (1). Normalize equation (1) to obtain the standardization matrix as follows:<br>
(1) standardization of raw data: there are r indexes in the raw data, and the sample size is c, and the obtained sample matrix is shown in formula (1). by normalizing formula (1), the standardized matrix shown below can be obtained.