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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.杜殇见到此情此景，不禁大为疑惑，想要探查清楚也来不及，只是想着如何尽快带走子婴。　　温丝莱特饰演的马雷·希恩是一名住在宾夕法尼亚州小镇上的侦探，她的生活因调查一起当地谋杀案而分崩离析。皮尔斯饰演的理查德·瑞安，是一位造访小镇的写作教授，25年前他写了一部登峰造极的小说，获得了美国国家图书奖，只是他从未实现自己早年的承诺。　　四月，翠巧在完婚之日，心有不甘决然逃出夫家，划船渡河去追求新的生活《#星际之门# Stargate》剧集系列自《星际之门：宇宙 Stargate Universe》被砍后一直停摆，不过MGM宣布他们将拍摄10集网剧《星际之门：起源 Stargate Origins》，以Catherine Langford为主角。（今年亦是《星际之门SG-1 Stargate SG-1》的第20周年）《星际之门：起源》由Mark Ilvedson和Justin Michael Terry执笔﹑Mercedes Bryce Morgan执导，会以全新篇幅讲述Catherine Langford与星际之门之间的早期故事；年轻的Catherine在意料外的冒险中解开了星际之门的神秘面纱，并同时在黑暗力量手中拯救地球。优比（孙艺珍 配音）是一只千年狐，虽然有一百岁了，实际等同于十岁的人类小孩，正值青春花季，单纯天真的她和六个迫降地球的外星人生活在一起。按照规矩，如果千年狐想成为人类就必须得到人类的灵魂，这也导致千年狐们去杀害人类，反过来，人类为了自卫不断地捕杀千年狐，到优比这代，就剩 她一只了。在她眼里，人类是愚蠢的代名词，没有想成为人类的欲望。直至一天，她遇到了一个叫坤宜（孔炯真 配音）的男孩子，开始喜欢上了他，而男孩生活在人类的世界，优比为了接近她化妆成人类到他生活的地方，于是她怀着好奇心开始和人类交往，于是新生活向她展开了一个充满冒险的新世界……Attention: Please click "Oriental Education Times" under the main title of the article.