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请问滑动时间窗口中有特殊节假日如何处理 #1

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176coding opened this issue Feb 11, 2017 · 1 comment

176coding commented Feb 11, 2017

你好，请教个问题：
你提到：统计该窗口前1/2/3/5/7/9/11/14天的各种非类目特征的sum和avg，统计item_id在最近14天的非聚划算支付件数最大值、最小值、标准差，统计其他类目id在最近14天的非聚划算支付件数的sum,avg,std

如果在某个窗口中，有特殊节假日，比如国庆，而国庆的销量特别高，比如：
窗口前14天是10月1号，而把10月1号的数据直接拿来做特征，会导致这个特征值很高，
请问如何处理这种情况呢，谢谢。

Owner

wepe commented Feb 11, 2017

取决于你预测的目标变量与节假日销量有没有相关性。你可以实验对比一下丢弃该特征前后的模型效果，如果加入该特征后效果变差，就丢弃吧

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