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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.由搜狐视频和博集天卷影业联合出品，知名导演徐昂执导，改编自“法医秦明系列”悬疑侦案小说《法医秦明》于4月11日正式开机。制服男神张若昀、焦俊艳、李现宣布正式加盟该剧，讲述的是人称“鬼手佛心”的法医秦明与刑警队长林涛、实习生赵大宝一起，运用自己的专业知识从蛛丝马迹开始追逐真相，破获了一个又一个案子，并抓出深深隐藏在幕后的黑手的故事。同一时刻，离这里几百公里的省监狱，国际刑警组织挂牌通缉多年越狱是由福克斯公司出品的，桑福德-布克斯塔弗导演的美国电视连续剧，该剧由温特沃思·米勒和多米尼克·珀塞尔等人主演，共4季，于2005年8月起上映，讲述的是一个关于拯救的故事。Hearing this, I think of the famous carnivorous fish-sawtooth salmon, which lives in tropical waters and fears almost all creatures living with them, including crocodiles, which are known as freshwater overlords, and a more familiar name, namely "piranha". However, the serrated salmon has made such a "world-famous" reputation for its small size. In addition to the large number, In addition to his fierce temperament, It is also closely related to their unique tooth structure, The teeth of salmon, Is sharp on both sides, The middle is sharp and densely arranged, and has a strong cutting function for all kinds of skin and meat. Therefore, although its mouth is not large, it can basically tear off a large piece of meat with one bite. Similar examples include the teeth of great white sharks, which also have such functions. However, the individual size of great white sharks is too large to be compared with serrated salmon, and its lethality cannot be compared.　　她仿佛落入了永世轮回的诅咒之中，无法超生……小咕会说人类的语言，几百年来他一直被埋在在地下。康一很快就和小咕成了好朋友，他们一起洗澡，一起吃饭，一起睡觉。而其它家庭成员也接受了小咕，小河童成了上原一家的秘密。