Quality grading method of China sea-cultured pearls on the basis of fuzzy evaluation
Kong Bei · 2003
A qualified model for grading the quality of China sea-cultured pearls is put forward.The model contains 3 hierarchies,6conditions and 12 factors.According to the basic weighting indices of the evaluation conditions and factors,China sea-cultured pearls can be sorted out into 5 grades,that is extraodinary fine,first grade,second grade,third grade and forth grade.Through computerizing the whole model on VB60,the grading of a pearl can be defined quickly and readily enough by calculating the subordinative order in the grades.