model层 用户只有标签起作用，如果加入针对用户的一些行为数据和拥有的数据做支撑，就比较闭环了

[changchengyan]

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[changchengyan]

用户标签和物体标签能给一个 相对优化指导我觉得 是最重要的

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User tags and object tags can give a relative optimization guide. I think it is the most important.