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 reason for terminal management is mainly aimed at two aspects: 1. The weak security awareness of employees leads to terminal attacks, even internal and external network interoperability, service and OA interoperability, etc. The problem may not be found in a short period of time. When viruses and Trojans enter, the damage caused is not only a terminal or a small OA area, but also the network environment of the whole group. 2. Employee insiders, the so-called "thousands of guards and thousands of guards" are difficult to prevent. It does not rule out that employees who are resentful will copy enterprise information through terminals and conduct covert online transactions.是不是？王穷点头，简短答道：是。CW频道剧集#The Outpost#第二季将于7月11日首播！It is understood that the second season of the program will debut on July 15, 2018 and will be broadcast on CCTV Financial Channel from 19: 00 to 20: 30 every Sunday, with a total of 25 issues. The 26th Charm Ceremony will be broadcast on January 1, 2019.Birthday banknotes refer to the numbers naturally generated in the currency in circulation officially issued by the People's Bank of China. For example, your birthday is October 15, 1978, so the full set of fifth edition RMB birthday banknotes are all 19781015 after the crown numbers of 100 yuan, 50 yuan, 10 yuan, 5 yuan, 2 yuan and 1 yuan. The eight-digit number of each RMB is the same as the date number of the birthday. Birthday banknotes are a symbol of the interweaving and radiance of fate and wealth. Birthdays are destined by heaven. It is also a gift to find the same number in the vast sea of money. It symbolizes that wealth will always accompany you, with sincerity and long blessings. The birth number is selected from many RMB banknotes with the same number. It is difficult to imagine. In addition, more and more people like it. In recent years, it has become more and more difficult to collect it. Therefore, it is your best choice to sell it early and benefit it early. It is your best choice to collect it directly, to collect it directly for your relatives and friends, and to give it to high-end customers. It is your best choice. Birthday gifts send "heart".
