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Physical Back Strike Skill Lv+1讲述因为28年后现身的亲生父亲，人生开始转变的女人，和她一直隐藏真实面貌的父亲之间的故事。永平帝收回目光，微微点头道：无妨。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.多年前一段纯真的友谊，多年来尘封已久的恩怨，铺展开全新的生命版图。李心兰和李柏杉姐弟一夜之间成为孤儿，被父亲的好友——商人刘力伟收养。而刘的妻子碧芬却因为早年的纠葛，处心积虑地拆磨这两个孩子，柏杉也被迫送往国外。刘力伟的儿子刘克谦与心兰渐渐萌发了爱意，愤怒的碧芬全力拆散，二人离家出走，不料发生了意外。离开刘家的日子里，心兰咬紧牙关，自食其力。其间，遇到了青年才俊张君华，君华开朗、善良，但……Deletes all rules in the specified chain of the specified table. The-F option means to empty the rules in the corresponding chain. Think twice when executing.