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吸血鬼美少女校园生活　　警视厅公安五课的警部补冰室沙也香（松雪泰子 饰）为主角（青木崇高 饰）的学长，也是佐久间班的成员，由于某种原因与其搭档而引人注目，并且还与内部间谍S合作。纵使是司马二的铁杆书迷，这时也不禁心有怨言。我以为，我就是你的天下……‘无以回报，我便送你一个天下。胡镇深吸了一口气，有些费力地解释道：我刚才躺下去的时候，用力猛了些，不小心震动了……秦枫不悦地说道：这样都能出事，你这伤怕是好不了了。晚上，板栗和葫芦从外边回来，弟妹们争相告诉他们雪橇的事。For codes of the same length, theoretically, the further the coding distance between any two categories, the stronger the error correction capability. Therefore, when the code length is small, the theoretical optimal code can be calculated according to this principle. However, it is difficult to effectively determine the optimal code when the code length is slightly larger. In fact, this is an NP-hard problem. However, we usually do not need to obtain theoretical optimal codes, because non-optimal codes can often produce good enough classifiers in practice. On the other hand, it is not that the better the theoretical properties of coding, the better the classification performance, because the machine learning problem involves many factors, such as dismantling multiple classes into two "class subsets", and the difficulty of distinguishing the two class subsets formed by different dismantling methods is often different, that is, the difficulty of the two classification problems caused by them is different. Therefore, one theory has a good quality of error correction, but it leads to a difficult coding for the two-classification problem, which is worse than the other theory, but it leads to a simpler coding for the two-classification problem, and it is hard to say which is better or weaker in the final performance of the model.