Then, each user has exactly four ratings in the validation data, which come earlier in time than the ratings by the same user in the test data.
然后，每个用户有4个验证数据，在时间上比同一个用户在测试集中打分数据出来的早。
Four is specially developed for the data acquisition software, it can be automatically set-top box it remote controller, the user data used to accurately understand and master the user ratings.
四是专门开发了数据采集回传软件，机顶盒可自动回传用户操作遥控器的数据，用于准确了解和掌握用户收视情况。
Within Arizona, people like Sheriff Arpaio, who has been re-elected four times, have soaring approval ratings.
在亚利桑那州内，像Arprio警长这样的人，已经被重新选上了4次，支持率飞涨。
The iPad took four of the top five spots onConsumer Reports’ ratings chart.
iPad囊括了排行榜前五名中的四个名次。
Four months later the reasearchers re-evaluated the students'progress through a combination of school data, teacher ratings and in-depth interviews with students and parents.
四个月之后，研究人员结合学校的纪录，老师的评价，及与学生和家长深谈后对这些学生的进步进行了再次的评价。
Four months later the researchers re-evaluated the students 'progress through a combination of school data, teacher ratings and in-depth interviews with students and parents.
四个月之后，研究人员结合学校的纪录，老师的评价，及与学生和家长深谈后对这些学生的进步进行了再次的评价。
Four months later the researchers re-evaluated the students 'progress through a combination of school data, teacher ratings and in-depth interviews with students and parents.
四个月之后，研究人员结合学校的纪录，老师的评价，及与学生和家长深谈后对这些学生的进步进行了再次的评价。
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