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It is easy to see that OvR only needs to train N classifiers, while OvO needs to train N (N-1)/2 classifiers, so the storage overhead and test time overhead of OvO are usually larger than OvR. However, in training, each classifier of OVR uses all training samples, while each classifier of OVO only uses samples of two classes. Therefore, when there are many classes, the training time cost of OVO is usually smaller than that of OVR. As for the prediction performance, it depends on the specific data distribution, which is similar in most cases.第二季已完成剧本阅读，现在正式进入拍摄阶段，预计将于明年二月中播出。1单身妈妈张映雪，为了给儿子一个良好的生活环境，重拾起旧学护士专业，在医院找了一份工作。在一次机缘巧合下，映雪救了院长之子刘嘉诚，并对其悉心照顾。在映雪妹妹晓君与嘉诚弟弟嘉祐的婚礼上，映雪的前婆婆为要回孙子，大闹婚礼，导致嘉诚之母甄珠对映雪一家产生不满，此事之后更是对映雪和晓君处处刁难。映雪因忙于工作使得儿子意外受伤，失去了抚养权。嘉诚了解了映雪的事情后细心陪伴，两人情意更深。不料刘家突遭横祸，嘉诚之父心力交瘁。映雪感受到了嘉诚的赤诚之心，决定站在嘉诚身边，帮助刘家度过危机，嘉祐与晓君更是在经历风风雨雨后，真正感受到彼此的爱，重新走到一起。四个年轻人，用他们的善良和勇敢，证明了那句老话“家和万事兴”。众将军都是有家室的，评估女人相当有经验。杨长帆精疲力竭躺在车上，是长贵招牌大，翘儿手巧，货郎帮忙，这三者缺一不可。