预测误差是指预测结果与预测对象发展变化的真实结果的差距。分为预测的相对误差与绝对误差。绝对误差是预测值与实际观测值的绝对差距,相对误差是绝对差距相对于观测值的百分比。确定预测误差,是为了检验预测的准确度,为决策提供可靠的依据。预测误差产生的原因是多方面的,有随机性误差与系统性误差之分。随机性误差指由于预测变量本身的随机性,因而产生的观测值(实际值)与期望值(预测值)之间的偏差。
... error of observation 观察误差 error of prediction 预测误差 error of refraction 折射误差 ...
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最终预测误差 FPE ; Final Prediction Error
反向预测误差滤波器 backward prediction error filter
预测误差算子 predictive error operator
均方根预测误差 [数] rms prediction error ; root-mean-square prediction error ; RMSEP
均方预测误差 Mean square forecast error ; [数] mean square prediction error
正向预测误差滤波器 forward prediction error filter
预测误差的方差 Variance of the Prediction Error
预测误差均方根 RMSEP
B ) xt = 1 + 0.243 Bε4 t+ 0.281B6, the fitting error: MSE=20.004, MAE=3.113, MAPE=0.172;the prediction error: MSE=19.637, MAE=3.553, MAPE=0.166.
B ) xt = 1 + 0.243 Bε4 t+ 0.281B6,拟和误差MSE=20.004,MAE=3.113,MAPE=0.172;预测误差MSE=19.637, MAE=3.553, MAPE=0.166。
参考来源 - 传染病预警指标体系及三种预测模型的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
然后对预测误差进行量化,以进一步降低编码率。
Then prediction errors were quantized properly to reduce coding rate further.
提前进行计划来消除预测误差总比根本没有预测要好些。
When planning ahead, coping with inaccuracy is better than having no forecast at all.
文章研究上市公司盈利预测误差对公司盈余管理行为的影响。
The paper researches the influence of earnings forecast deviation on earnings management behavior of listed companies.
All right now, now what I'd like you to do is just sort of do a guestimate in your mind of the percentage errors you might have made overall in these estimates, and I'll come back and ask you in a minute.
好了,现在,现在我希望你们,在脑海中估算下你们预测的百分误差,你们可以就总值做一个估算,我会在一分钟后问你们
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