灰色关联度模型

99152.374220141.48312.22390.94950.76961.01912.48673、求对应差序列。计算X0(j)-Xi(j),即将表2中X0数值值分别减去X1、X2、X3、X4、X5、中各行数值,并求绝对值。由表3可以看出,最大值绝对差值为1.7171,最小绝对差值为0。表3各比较数列与参考数列的绝对差|x0-x1||x0-x2||x0-x3||x0-x4||x0-x5|20050000020060.01150.16910.05360.10270.051920070.16080.16200.23920.30580.240320080.27890.05880.43710.52890.437120090.33230.04810.53830.65410.548720100.48220.04710.73710.86580.737520110.78740.14961.10761.25961.096920120.99460.28291.36781.52861.368620130.96900.19041.41521.58811.382620141.00360.26281.53721.71711.4676max1.00360.28291.53721.71711.4676min000004、计算关联系数。取分辨率为0.5,根据表3灰色关联系数的计算结果,可算出农业机械总动力、农村用电量、化肥用电量、农药使用量、有效灌溉面积与农业总产值,各关联度详见表4。εik=0+0.5×1.717XOK-XiK+0.5×1.717=0.859XOK-XiK+0.859=0.859XOK-XiK+0.859表4江苏省农业现代化指标与农业总产值的关联度项目农业机械总动力农村用电量化肥施用量农药使用量有效灌溉面积关联度0.68610.86960.60970.57640.6112排序21453