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杨长帆最终望向徐文长。90年代，南⽅小镇烟波岛上出现了居⺠接连神秘失踪的诡异事件。事件发⽣的时候，一个身份不明的短发少女随着神秘的⿊色黏液来到小镇，似乎与失踪事件极为关联。为了找到失踪的好友游尚杰，⼩镇⾼中生付君浩和张宇轩带着这个神秘少⼥四处探查。与此同时，正在寻找失踪的哥哥的⼩镇高中⼥教师沙拉，也和欢喜冤家苏民绪结成⼀支⼩队，对于突然出现在岛上的神秘⿊衣⼈团伙展开了了调查...... 各处出现的⿊色粘液究竟是什什么?失踪的⼈们到底被什么东⻄卷走?街上的枯井当中为何传来怪声?⿊衣⼈口中的博⼠又是指向何⼈人?⼀切的⼀切都表明，一场巨大的危机正在悄悄逼近岛上的居民们，⽽善良的⼈们对此一无所知......Ordinary people all over the world may feel deprived of their rights because the government is obviously unprepared, but preventing the massacre of cyber war does start with us: first, checking the belated status quo of our relationship with the Internet. Even if federal agencies do not achieve digital security as some critics hope, ordinary citizens can still protect themselves.小葱笑道：嗳。谁都羡慕的生活，富裕的恋人。没有什么不满。The learning platform launched on that day is called "Learning Power". No matter from the time node, the attendees or even the names of the platform, it obviously has a very heavy weight.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.