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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.《热血狂篮》讲述了一名篮球少年带着挚友遗愿，在球场努力拼搏、挥洒青春，最终克服了狭隘的个人英雄主义，融入集体，实现自我价值的故事。使得兵器不至于滑落，更加的稳定，在战场上拼杀也就更加的方便和行之有效。战术人偶们所编织的，在壮烈战斗的最后等待着的到底是……。A blood type that is good at speaking and suitable for being an orator.For medicinal tea and tincture张雷被父亲的老战友周志强抚养长大，并把他也培养成为了一名公安民警。