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还是不理解,sample怎么分成2份的啊要么分成4份,要么分成1份. 因为3,4和2,3的resemblance为2, 4,3和3,4的resemblance也是2, 3,1和2,2的resemblance也是2,怎么分才能是两组哦? Followed by:
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