An Evaluation Model Based on Grey Trigonometry Whitening Weight Function for Logistic Center

In order to locate logistic centers and improve the scientificity of logistic center evaluation, the connotation and extension of logistic center was analyzed. Analysis result shows that the logistic center is grey system. According to the classical grey theory, the grey number was adopted to express the evaluation indices and clustering thresholds. Furthermore, grey number formula was presented and clustering model was built based on the trigonometry whitening weight function. Then, possibility idea of compare interval number was introduced into grey number compare. At last, an empirical study was given to prove the effectiveness and reasonableness of the presented model.