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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.Reporter: I don't believe it.家庭煮夫方原过了五年“女主外，男主内”的生活，终于被日益强势的老婆嫌弃。为了挽救婚姻，方原毅然决然的踏上了去大城市的闯荡之路，凭借自己的一技之长，开始了全能男保姆的工作。这年头客户的要求都高：洗衣洗碗洗车、擦地擦窗擦烟机、修房修草修家电、看护看门看孩子、做饭做菜做月子餐，这些都只是基本技能，代驾代谈判代分手、送花送货送口信也不算稀奇事。碰上高小姐这样的客户，方原要给人家孩子每周当一天的爹；碰上马舒儿这样的客户，方原除了干活还得兼职心理治疗师、职业规划师；而碰上陆晴这样的客户，任凭方原十项全能，都依旧被连累得背黑锅、丢彩票，赚不到钱不说还得倒贴钱。三个女人一台戏，客户还是不能得罪的上帝，方原这个男保姆努力发挥正能量，做出口碑做出成绩。When the switch is pressed, the program will call the self.buttonWasPressed method. All behaviors after the switch is pressed will be encapsulated in this method. The code is as follows:《暗黑第二季》讲述了一个超自然力量的家庭传奇故事。故事设置在今天的一个德国小镇，两个孩子的消失揭开了四个家庭的双重生活和破碎的关系。该剧集共十集，每集 1 小时，讲述了将小镇与 1986 年的过去联系起来的超自然力量。这些，都是父辈一生的经验，他们没有足够的精力、耐力、智慧与时间让孩子充分理解，不得不选取了一种更直接的方式。《更美好的事》由Louis C.K.及Pamela Adlon主创，该剧算是Pamela Adlon半自传性质剧，讲述一位中产单身母亲女演员，如何整天工作之余，还照顾起三个女儿（Mikey Madison﹑Hannah Alligood﹑Olivia Edward饰），而且她还得抽空应付住在对面街的英国籍母亲（Celia Imrie饰）。Louis C.K.及Pamela Adlon负责了首集剧本。