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望着被自己甩在身后的巍巍城墙。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.2. Expansion and development are not restricted by regions;于是姐妹们低声说悄悄话。Open the website of "Learning Power" and first see the top red and white logo area. "Learning" is a free and easy Mao character, and "Powerful Country" is a square bold character. Below these four large characters, nine small characters are marked "Director of Propaganda Department of the CPC Central Committee". On the right side of the logo area is a sentence signed with the name of General Secretary Xi Jinping: "Dreams start with learning, and career starts with practice." This sentence comes from his speech on October 21, 2013 at the celebration meeting of the 100th anniversary of the founding of the European and American Homecoming Association. He has made many speeches on strengthening study, building a big learning country and promoting the whole Party to learn.　　从插队知青变成“保姆”的奚美娟，女儿因是当红歌星而对其实是生母的“保姆”态度骄横跋扈，面对身为雇主的亲生女儿却含泪不能相认。《保姆妈妈》还有更多的现实故事元素，如巫刚扮演的大学教授当年在做知青时，曾为前途不惜抛妻弃子，高露扮演的红歌星未婚先有子等，都是社会上各种现象的缩影。《逆贼：百姓的盗贼》是由金镇万执导，黄真英编剧，尹均相、蔡秀彬、金基石、李哈妮主演的古装剧。该剧讲述了讲述朝鲜最初的革命家兼具反体制运动者洪吉童的生涯故事。