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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.汉军因为身处绝境之中，每一个汉军将士都知道自己若是退缩就是一个死，往前冲或许还有那么一条活路。第二季再编集版。一段来自天国的妈妈所做的真情告白：当意外车祸发生时，我才了解到“天妒红颜、红颜薄命”亘古不变的真理！忘了做自我介绍，我叫徐媚茵，生平追求者无数，拥有两个前夫：洪芋头（风流快活中）、周港生（已殁），一个现任老公（失联中），三个宝贝女儿：洪珍妮、周舒洁、周舒琪，以及一个宠物儿子～小白。在女人四十一枝花的大好时光，香消玉殒，享年自然是四十岁整，严禁查对身分证！舒洁和舒琪我这两个可爱的女儿，是我跟第二任死鬼老公爱的结晶。这当然是骗小孩的话。我和她们、以及第三任老公戴维幸福快乐地住在信义计划区豪宅。这当然又是骗亲朋好友的话。事实是，我死了且戴维老早就失踪了，舒洁和舒琪那两个孩子面临到“亲离子散、四面楚歌”的艰难处境。聪明伶俐如我的舒琪，展露了她比姊姊舒洁还要成熟的应变能力。为了不让可怕的「胡姑婆」变成她们姊妹的监护人，唯有找一个冒牌爸爸顶替失踪的戴维爸爸（因亲朋好友都没见过戴维的真面目），她们才能在同一个屋檐下继续生活…应征「年轻把拔」时，好死不死「胡姑婆」正巧出现，骂我两个乖女儿没人管教、乱交朋Origi.setValue ("niu");童岳觉得，以这一期《倚天》表现出来的水准，天启完全可以去写宫斗小说了。胖子忽然笑道：小丫头，不管你怎么说，咱们收了人家一半的银子，是一定要把你交出去的，不然那一半也拿不到。