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。

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CHINA's car market has overtaken America's in sales volume for the first time, several years earlier than analysts had predicted before the financial crisis.

中国的汽车市场第一次超过了美国的销售金额，比金融危机前分析家预测的早了好几年。

www.ecocn.org

The findings might suggest these primates spent far more time evolving and diversifying than before considered, but the researchers contend that anthropoids seem absent at earlier sites in Africa.

这些发现可能说明灵长目进化及变种的过程很长，这是之前没有考虑到的。但是研究者们声称在非洲早些时候的这些位置并没有出现类人猿。

article.yeeyan.org

The restructuring, done under the auspices of the Paris Club, an informal group of western creditor countries, came earlier than expected and just in time for the first round of Iraqi elections expected in January.

ECONOMIST: Iraq's debts

Marco Andretti, who put his famous family atop the standings for the first time in more than a decade earlier in the week, finished 20th and made at least one other driver very angry.

NPR: Conway Wins 1st Of 2 Races At Detroit Grand Prix

This time China's policymakers are stepping in to cool things down earlier than they did in the early 1990s, when inflation was far higher and investment and credit were growing even faster than today.

ECONOMIST: China's economy