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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.九斩修罗是一位来彼岸世界的灵妖，他在学校附近开了一家书店。表面上书店和平常书店并没有什么不同之处，其实书店是可以通往另一个世界的时空之门。Go to Orgrimmar and ask where the guard mage trainer is! Then go to the trainer, next to him is the portal, through the portal is the cursed land, through the dark gate is the hellfire peninsula, and begin to do task I四川巫山，一个因三峡工程而即将被淹没的小镇。拖着幼儿寡居的旅馆职工陈青打算再婚，一直照顾她们母子并和她有着暖昧关系的旅馆经理老莫想为她讨个公道，缠着正为婚事奔波的民警小吴要揭发一起强奸案，并找到了强奸犯--长江信号工麦强。受害人陈青否认发生过任何事，而麦强在朋友眼中是个不折不扣的柳下惠，连送上门的女人都不动邪念，会犯下这种事吗？In many fields, the road to excellence is not the result of accurate calculation of time, but vague and ambiguous. No simple model leads to greatness.6. A photocopy of the Notice of Approval for Enterprise Information Change issued by the Administration for Industry and Commerce and stamped with the official seal (three certificates need not be provided in one)　　沉香决心救母，他偷偷地离开家，不想却被二郎神捉了去。紧急关头，百花仙子（叶伊娜 饰）闻讯赶到。她威胁二郎神，如果不放了沉香，就将他暗恋嫦娥（颜丹晨 饰）之事公之于众。二郎神只好退去。