绝对误差百分比（ Mean absolute percentage error）作 为决策质量的指标（ Yaniv， 2004a， 2004b； Harvey
基于20个网页-相关网页
2nˆ1⎛P−P⎞(2)平均方根误差百分比（Root Mean Squared Percentage Error, RMSPE）：ii ×100%∑⎜⎟nPi=1⎝⎠i为一相对量的误差评估准则，數值越小，模型愈能捕捉到市场价格。
基于4个网页-相关网页
平均绝对误差百分比 MAPE ; Mean Absolute Percentage Error
误差百分比 MAPE ; percentage error
直径差百分比 diameter difference percent
进度偏差百分比 Schedule variance pct
价格容差百分比 hinnan toleranssiprosentti ; percentuale di tolleranza prezzi
异动容差百分比 transaction tolerance percent
选项方差百分比 optional variance percent
绝对误差百分比 Absolute percentage errors ; APE
平均方根误差百分比 Root Mean Squared Percentage Error ; RMSPE
实践表明，这种方法具有较高精度，平均残差百分比绝对值为1.61%，适合小样本单价的建立。
The practice indicated that the method possesses higher accuracy with absolute value 1.61% of the average residual percentage. The model may be suitable for the price establishment of small samples.
摆动是每天基于品项(件数，单元数)百分比变化差的绝对值。
Swing is the absolute value of day to day percentage change based on items (pieces, or units).
本研究以自行编制问卷为工具，资料处理以SAS PC套装软体计算百分比等级、平均数和标凖差，进行描述统计分析。
The research tool was self-developed questionnaire. The data were analyzed with SAS PC software on percentage, average mean, and standard deviation for descriptive analysis.
应用推荐