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recommendersystem's Introduction

工业界的推荐系统

  1. 概要 [讲义]

  2. 召回

  3. 排序

  4. 交叉结构

  5. 用户行为序列建模

  6. 多样性 [讲义]

  7. 物品冷启动 [讲义]

  8. 涨指标的方法 [参考文献]

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recommendersystem's Issues

关于对视频时长预估的思考

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

求第二至五章的讲义

求第二至五章的讲义.

Notes 目录下只有第一, 六,七章的讲义. 王老师, 您是否方便提供其余章节的讲义?

DDP多样性

为什么多个item组成的体积最大会导致多样性最大呢?
假设两个item,不应该方向相反才是多样性最大吗?或者三个item就是各成120度。

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