MAPE 平均绝对百分误差

from fbprophet.diagnostics import performance_metrics

df_p = performance_metrics(df_cv)

df_p.head()

mape平均绝对百分误差

• 定义
  

• def evalmape(preds, dtrain):
      gaps = dtrain.get_label()
      err = abs(gaps-preds)/gaps
      err[(gaps==0)] = 0
      err = np.mean(err)*100
      return 'error',err