在使用刀切法时需要划分随机组，文中提出三种划分随机组的方法并对它们作了比较。
The first step to use the Jackknife Method is to create Random Groups. And the paper presents three methods to do so and makes a comparison among them.
在使用刀切法时需要划分随机组，文中提出三种划分随机组的方法并对它们作了比较。
The first step to use the Jackknife Method is to create Random Groups. And the paper presents three methods to do so and makes a comparison among them.
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