复赛27/5182
主题思路:滑窗统计特征,3/6/9三个月份滑窗
主要的统计特征有:
浏览时间间隔,行为特征间隔,用户等级年龄等
同时记得过滤双11,6.18特殊的购物日期。
PS:队友最后阶段找了个trick,从平均值上对购买时间进行优化。
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