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一些衡量消费者信心的评测指标也有所下滑。
学习速率也属于一种非准确性功能性测量指标，能够评测推荐系统达到为新增项目或用户做推荐的合理水平所需的时间。
The learning rate also belongs to non-accuracy functional metrics and measures how quickly the rs achieves a reasonable recommendation level for recently introduced items or users.
输出多种定量指标体系，分类组合查询和关键字综合查询，可动态添加的评测和预警模型：Z记分模型等。
Output of a variety of quantitative indicators system, an integrated clustering queries and keyword queries can be dynamically added evaluation and early warning models:Z score model.
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