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关于对视频时长预估的思考 #4

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@soar200

大佬好,时长用在短视频预估上,sigmoid(x)函数在x>=5 约等于1,label 可以认为t.>=5是一种有效过看,t<5是一种无效观看。这时候t 就可以直接对有效观看时长进行加权。如果用在长视频上,时间t设置为5 分钟勉强可以,不过效果可能不咋地

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