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Recommender_System
08_Improvement
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## 心得
# 1、此处的i2i召回的物品相似性计算,结合聚类的i2i理解;
# 2、双塔召回的改进,不仅进是单目标计算用户和物品的相似性,
# 还可以结合多目标训练模型。