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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.随后不久，大刀王五被奸人所害身首异处。霍元甲得知消息连夜去为义兄收尸，虽然让王五留存全尸，却给霍家引来大祸，致使霍氏男丁尽死。一年后，隐居沧州的霍元甲出山走镖，却不想又陷入仇家圈套之中，费尽千辛万苦，虽然洗脱干系，却让他心灰意冷，他由此决定南下上海。霍元甲的精武门很快就在上海立住了脚跟，霍元甲的名气也越来越大。这让已经将侵华列为国策的日本人十分不满，面对日本人的挑衅，霍元甲带病上阵，在与日本人的最后较量中斗智斗勇，最终凭借过人的胆识挫败了日本人的阴谋。影片改编自Garth Stein所著同名畅销小说，聚焦一只名叫恩佐的狗狗，和他的主人——职业赛车手Denny Swift，恩佐跟着Denny学会了很多生活哲学。《少年江湖物语》讲述了一个江湖中邪不压正，青春正好，有情有爱的温暖故事。剧中有魔教教主，有天下第一剑客，有身世成谜的江湖大夫，有忠心耿耿的小丫鬟，更有艳压秦淮的当红花魁，众多看似完全没有交集的人物纷纷亮相登场，搅乱江湖一池春水。1976年南州公安战线的侦察员周志明在“陵园事件”中以渎职罪被判15年徒刑。十年动乱后，他被平反回家，父亲早已离开人间。女友将他接到家中。他在侦破一起“窃密案”中，使女友的姐姐被捕，与女友产生矛盾。后来终于真相大白，与女友重归于好。林大爷已经睡下了，被这敲门声惊得心中一跳，急忙披衣下床，趿着鞋，点燃一盏灯笼，来到院门口，对外问道：哪一个？这么晚了有啥事？外面人道：林大爷，是我，青木。主人公房东为了生计开了一家事务所。平时接不到大案。只能帮隔壁邻居做做家常。有一天事务所来了一个神秘的人物。交给他一个大案。但前提是他要竟聘上岗。最终如愿。神秘人告诉他有一批从东北亚过来的污染食品。害了很多国人。他已经一举荐将这不法团伙消灭。但被狡猾的坏人溜走了一个。唯一的线索是他身上的体味。那么房东仅凭这唯一的线索能否找到不法分子。