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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./gloat (contented)钱明眼馋地盯着板栗手上串的小鱼，咽了下口水，威胁道：我说黎兄弟，大家都是同袍，你怎好吃独食？你要是不让咱们兄弟沾带些，老子可要喊人了。(1) Whoever commits the crime of intentional injury and causes serious injury to a person, and the degree of injury is close to the standard of minor injury and has not yet reached the standard of disability, shall be sentenced to fixed-term imprisonment of not less than three years but not more than four years;Hebei Province从小到大都个性强烈的齐若谷（马伊琍 饰）怀揣着心中的远大理想成为了一名专门报道社会新闻的职业记者。一次外出采访时，身背重要摄影器材的若谷成为了歹徒觊觎的对象，幸运的是，恰好路过此地的男子陈剑平（贾一平 饰）无私地伸出了援手，若谷这才逃过了一劫，她和剑平之间的缘分也就此开始。