Estimation of GM (1, 1) model parameter usually adopts the least square criterion, but test of model precision often USES average relative error criterion.
估计GM(1,1)模型中的参数通常采用最小二乘准则，而在模型精度检验时又常采用平均相对误差。
Act as routine dispose signal estimation route to, recursion least square method possess in a position to at approximate time bring relative comparison small error.
作为常规的处理信号估计的方法，递归最小二乘法具有能够在估计的时候产生相对比较小的误差。
The results of estimation show that BP neural network can estimate farmland drainage accurately with the largest relative error only of-2.45%.
估算结果表明利用BP神经网络可以准确地估算农田排水量，最大相对误差仅为-2.45%。
If we heighten the precision of measuring equipment, the central difference's relative error of the estimation variance improved great, which is less than 10%.
若提高测量仪表精度，则中心差分法估计方差相对值明显改善，可提高到10%以内。
Unbiased estimation of flow size, the upper bound of relative error and the time and space complexity are deduced theoretically.
理论上给出了算法的流大小的无偏估计，相对误差的上界以及时间和空间复杂度。
Two relative error criteria for simple order statistic filters (Ranked-order statistic filters) are defined, and optimum estimation based on the error criteria is obtained.
在相对误差意义下定义了针对一种简单的顺序滤波器的两种相对误差准则，并在该准则基础上得到了相应的最佳估值。
Two relative error criteria for simple order statistic filters (Ranked-order statistic filters) are defined, and optimum estimation based on the error criteria is obtained.
在相对误差意义下定义了针对一种简单的顺序滤波器的两种相对误差准则，并在该准则基础上得到了相应的最佳估值。
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