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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.即将大四毕业的林之校（杨紫 饰）在毕业前夕跌落人生谷底，父亲患癌住院，不得已放弃外地的名企工作机会，和男朋友分手。所有对于爱情和未来生活的美好想象都在这一刻破灭，恰好这时，父亲的主治医生顾魏（肖战 饰）走进了林之校的生活。爱情开始的时候，我们往往都不知道是爱情，两个都曾在爱情中受过伤，不相信爱情的人，开始一步一步相识、相知、相爱，有过怀疑和波澜，也有过误会和遭遇人生低谷，但两人在相爱的过程中，愈发感受到对方才是那个能够托付余生的那个人。Sound Card: DirectX Compatible Sound CardIn terms of product development, Osaka Weaving House has also gone through detours. For example, at first I made Japanese-style lace bras with steel rings, but I failed because more and more young women wanted to get rid of the shackles. Later, Osaka Weaving House only made bras without traces and rims.【节目介绍】You can use the flight simulator function in Google Earth to fly around the earth. It allows you to use a mouse or other controller to control the simulated plane.乔飞一直进行古文物的保护工作，专门打击盗墓及文物走私倒卖的犯罪活动。而此时恩师的独生女蓝婷却遭另一伙寻找古城的探险者绑架，要挟乔飞交出地图。终于在一场惊心动魄的巨战后，乔飞救出了蓝婷，但地图却遭人抢走。乔飞只想一人独自涉险完成任务，未料却多了三名并肩同行的战友：蓝婷、排骨与考古家华定邦。