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https://mp.weixin.qq.com/s/gVzUK2v-lZ9-fEIwgX1jzw
将“自动”相似物品/用户类型修改为相关度和相似度的平均值。相关指用户的共同物品数量(或者物品的共同用户数量),相似指两者的共同标签数量,新版本中“自动”为相关度和相似度的平均值。