Jeff Li
@jefflijun
▶ YouTuber: 隐枫视野；Financial Times:
Joined September 2009
522 Following 62.7K Followers
『解释过去头头是道，似乎有理；预测未来躲躲闪闪，误差惊人』…这是高善文博士的自我调侃，我觉得用来形容营销组合模型(Marketing Mix Model）也很贴切。没有incremental test做calibration的模型结果，必然是过拟合套着过拟合
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