在每个子集中，永固打分数据按照用户分组。
At each subset, user rating data is grouped by user. First line for a user is formatted as.
不要再给我打分数！
直接用滑鼠点在星星上面，就可以帮喜欢的加菲猫漫画打分数喔！
You can easily rate any comic by clicking on the star directly.
我们不会以这份专题构想打分数，因为写出专题构想可以帮助你思考如何进行专题。
You won't be judged on your proposal; it is there to help you to get started.
好好利用第一学期不打分数的自由吧，去经历不同的事然后找出最好的适合你的方式。
Use the freedom that comes with not having grades first semester to experiment and see what works best for you.
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。
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。
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.
应用推荐