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一、农业经济结构的灰色系统分析在灰色系统理论中,系统分析是采用灰色关联分析,根据因素之间发展态势的相似或相异程度,来衡量因素间关联程度的方法,它实际上是动态过程发展态势的量化分析。1、计算方法与步骤:(1)确定参考序列和比较序列。(2)无量纲化处理(采用初值比或均值比)。(3)求关联系数中的两级差:△min=(?)|Xo(K)-Xi(K)|;△max=(?)|Xo(K)-Xi(K)| (4)取分辩系数(P)P=0.1～1.0,一般取P=0.5。(5)求关联系数:§oi(K)=(△min+P·△max)/(△ci/oi(K)+P·△max)。(6)计算关联度:roi=1/(?)oi(K),式中N为比较序列的数据列,根据关联度大小,
First, the gray system analysis of agricultural economic structure In the gray system theory, the system analysis is the use of gray relational analysis, according to the similarities or dissimilarities in the development trend between factors to measure the degree of correlation between factors, which is actually dynamic Quantitative Analysis of Process Development Situation. 1, calculation methods and steps: (1) to determine the reference sequence and comparison of sequences. (2) Dimensionless treatment (using initial ratio or mean ratio). (3) Find the two steps in the correlation coefficient: Δmin = (?) | Xo (K) -Xi (K) | △ max = (?) | Xo (K) -Xi (K) | The resolution coefficient (P) P = 0.1 ~ 1.0, generally take P = 0.5. (5) Find the correlation coefficient: §oi (K) = (△ min + P · △ max) / (△ ci / oi (K) + P · △ max). (6) Calculate the degree of association: roi = 1 / (?) Oi (K), where N is the data sequence of the comparison sequence,