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Use reasonable data sampling: It is necessary to ensure that a small number of entities (including IP or users) cannot account for most of the model training data. In particular, care should be taken not to pay too much attention to false positives and false negatives reported by users. This may be achieved by limiting the number of examples that each user can contribute or using attenuation weights based on the number of reported examples.猛一扬手臂，手中钢刀就甩了出去。If an attack is detected, the management center will start a cleaning scheme to pull the mixed traffic of attack traffic and normal traffic through BGP, CDN, etc. Pull the mixed flow to the flow cleaning center for cleaning. The problem in the process of traffic cleaning is that the current DDOS attacks present a mixed attack state with multiple attack methods coexisting. In this case, how to efficiently detect attacks is the main problem currently facing. After consulting numerous data, Huawei's "seven-layer cleaning plan" is found to be very enlightening. The scheme comprehensively analyzes data packets for mixed traffic through seven layers of defense measures such as static filtering, abnormal message filtering, scanning and snooping message filtering, source legitimacy authentication, session-based prevention, feature identification filtering and traffic shaping, so as to detect attack traffic to the greatest extent. The framework of Huawei's "seven-layer cleaning scheme" is shown in Figure 2. After the traffic is cleaned, the attack traffic is discarded, and the normal traffic is injected back into the network through MPLS, GRE tunnel technology, etc.10. Click to download: Communications Department's electronic signature attachment. RAR, attachment 5, attachment 7, fill in and affix the official seal; Appendix 9, Signature; Attachment 10, in two copies, Party a shall fill in the name of the unit and affix its official seal.故事发生在与世隔绝、由通灵性的狼群守护着的“狼嗥谷”，柳朗月有如大地之母，群狼都听命于她，而所有的恩怨发生在二十五年前山下的平遥王城。-Do not need to use "Run as Administrator" when executing for the first time;