该算法赋予每项评分一个按时间逐步递减的权重，利用加权后的评分寻找目标用户的最近邻居。
The rating is given a weight by a gradual time decrease which is weighted to search the nearest neighbor of the target user.
该算法赋予每项评分一个按时间逐步递减的权重，利用加权后的评分寻找目标用户的最近邻居。
The rating is given a weight by a gradual time decrease which is weighted to search the nearest neighbor of the target user.
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