The paper studied the relative error which appear because of abbreviation for the model of crane load sway, the relative error equations are obtained too.

研究了起重机载荷摆振模型在简化过程中所产生的相对误差，得到了相对误差公式。

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The root mean square relative error, mean absolute relative error and maximize absolute relative error of SVM model generalization performance are 1.06%, 0.96% and 1.16%, respectively.

对SVM多元非线性回归泛化性能进行测试，其均方根相对误差为1.06%，平均绝对相对误差为0.96%，最大绝对相对误差为1.16%。

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The results indicate that the relative monitoring error is about 10%, and the relative risk forecasting error is about 20%.

从近年在河北省冬麦区土壤水分的监测预测结果来看，监测相对误差在10%左右，风险预测相对误差在20%左右。

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However, as index-based mutual funds and ETFs continue to gain popularity and active managers are increasingly pressured to control their performance tracking error relative to benchmark indexes, the markets could become less efficient.

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