Jessica lifted her hand from the door, turned, saw Mapes come to the foot of the stairs.
杰西卡把手从门上拿开,转身看到梅普斯来到楼梯脚下。
英语百科
Mean absolute percentage error
(重定向自MAPE)
The mean absolute percentage error (MAPE), also known as mean absolute percentage deviation (MAPD), is a measure of prediction accuracy of a forecasting method in statistics, for example in trend estimation. It usually expresses accuracy as a percentage, and is defined by the formula: