Grey evaluation and triangle-coordinate figure of golden section

Multidimensional grey evaluation is an intelligent method for decision evaluation. We distinguish the class of the assessment object according to the maximum of composite weighting coefficients vector in grey evaluation. However, we find there are obvious limitations or deficiencies in the practical application. This paper divides three basic types of grey evaluation into ten particular classifications by combining the triangle-coordinate figure with the theory of golden section, which can provide more effective information and reliable scientific evidence for the decision-making. We calculate grey evaluation code by weighted summation of category weights and make the single-level sort. Hence, through the proposed procedure, grey evaluation will be more comprehensive, accurate and credible.