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.
The following is the definition of the factory method: an interface is defined to create an object, but the subclass decides which one to create. The factory method defers this process of creating objects to subclasses.
Koharu has just given birth and is still nursing, but seeing the information released by her friends in the rights group, she could not sit at home and wait: "That week, she really spent every day in the police station."
前女警因为正义被解雇，受到国安局赏识，卧底黑手党，清除余孽…
建筑专业小天才胡理山一直单恋发小夏白橙，却在高中时期拒绝了一位古怪女孩的表白后被下“恨的诅咒”，永远无法向夏白橙告白。一旦告白夏白橙就要遭受厄运。胡理山想尽办法，也无法解除。无意间找到了可以解除诅咒的办法——夏白橙需要向喜欢的人表白。与胡理山上了同一所大学的夏白橙偶遇胡理山的宿敌石井，不料对其一见钟情。胡理山等待已久的机会终于来了，忍痛帮助夏白橙去追自己最讨厌的人。三人关系越走越近，更集结了其他伙伴一起，为了学校组团战斗，友情、爱情交织在一起，情感与梦想历经险阻，一波三折。
NBA Genuine Ball: This kind of ball is heavier, less flexible, reduces unnecessary rotation in shooting, and is more suitable for layups after confrontation.
影帝“穆廷州”，是个“母胎solo”的高冷男神，却阴差阳错地在一次意外后“失去记忆”，他认定自己是来自古代的“太傅”，而明薇是他的“公主”，自此对明薇毕恭毕敬又管东管西。男女主的思维交汇不断在古代和现代交错穿插，他们的日常画风也是格外“错乱”，穆廷州会在化身太傅后每日打电话向女主请安：“微臣穆昀，遥拜公主”，也会身着笔挺的西装当着众人的面向女主行跪拜之礼。
Density (g/cm3)
R1 + button: Make the enemy faint.
2. Do a good job of understanding before raising. First of all, look for some information on the Internet, study hard, and understand the basic habits of crayfish. Don't just see a few shrimps and listen to others saying that it likes to eat dead chickens and rotten intestines, so it blindly starts.
内侍气得直哆嗦，胡乱喊道：反了。
你们吵死了。
And they
However, whether this is a war remains to be discussed. In the simplest sense, the act of cyber war is defined as an attack by one country on another country's digital infrastructure.
Answer:
冰儿也愤愤地说道：她一个女孩子，不在家好好呆着，跑到战场干嘛？活该被捉。
红椒又道：你家里，是不是有人送了你一个丫头，准备将来收了她？田遥听了心惊。
