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In an interview with Kaggle, he shared his experience in participating in the competition and also talked about many combat experiences in machine learning competitions. Quantum bits are transported here. The following is the translation of the interview:原来这就是洪荒，原来这就是巫的故事……许久之后，周青喃喃自语。Some "researchers according to * * * research" always confuse their career with their amateur and make some marginal suggestions. There are also some coaches or training methods that are too professional. From the perspective of improving the national competitive level and striving for gold medals, they are determined to improve the limits of human body. For amateurs, there are also some undesirable points and they should have their own judgment. Also don't follow professional teams too much, such as the training methods of professional athletes in sports schools. The selection and training system of professional athletes are different. They begin to receive basic training of various specialties before they are 10 years old. After climbing to the provincial team, they have been trained for nearly 10 years. It is purely uncomfortable to copy and use the training plan of professional athletes. For example, Tian Tao did not practice much strength in the first three years of joining the provincial professional team, but jumped for three years. If you want to follow the current training system of others, you can jump for three years first. The same is true for other sports. The foundation and talent are different. Don't think that the advanced training method of professional teams is the unique martial arts in the world. A professional training system and the promotion and popularization of sports are basically two different things.Amplification attack is a special reflection attack. The special feature is that the reflector has the function of amplifying network traffic and is a common technical means in DDoS. Its basic principle is relatively simple. For a C/S service, if the Server-to-Client Response message is larger than the Client-to-Server Request message, the traffic is enlarged. In order to use amplification technology in DDoS, one condition needs to be met, that is, the services provided by Server are based on connectionless protocols such as UDP.