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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.季木霖把啤酒放茶几上，面无表情地说：我没让你等。System.out.println ("disk shutdown! ");新的一学年开始了，结束了大一的骄傲和浮躁之后，桥川、钟白、任逸帆等人顺利进入了大二。肖海洋也通过了大一的考试，如愿以偿没有留级。大一的同窗情谊依旧继续。过了一个假期，大二伊始，旧同学的离开和新同学的加入，让他们之间的关系也发生了微妙变化。顾一心随家人去了美国上学， 毕十三把这份牵挂变成了学习上奋进的动力。转学生许连翘新转入电摄班并貌似带着神秘的任务。原班主任的离开，让原本散漫的电摄班开始团结。人物的新旧交替，和大二课业的丰富与繁重，2015级电摄班大二的同窗故事更加精彩。这时的他们褪去了大一的青涩，迎来大学中成长速度最快的一年。九个人开启了各自的梦想，并在跌跌撞撞中实现自己的梦想。又是一年大学时光的流逝，九位同窗好友之间的情谊越来越浓。1月10日，网络剧《鬼谷门·蜃世浩劫》在横店举行了隆重的开机仪式。影片主创成员陈子由、刘济恺、许雅婷、圣微、杨超然，在导演韩冠宇的带领下齐齐亮相。影片中令人期待的一众角色的饰演者也揭开了神秘面纱。韩王成到访，刘邦和张良知道躲不过去，也就爽快地答应了。十多年前就是歌坛天后。