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Public interface Expression {Typical flow of the asynchronous blocking I/O model (select)Fig. 2 shows the damage when all entries are exactly the same as Fig. 1 and are at "right above" (if this is not called right above, the landlord does not know what is right above, because I can no longer adjust the angle, and I cannot aim at right above the head). The result is that the two are completely consistent.Information Theory: I forget which publishing house it was. It is a very thin book and it is very good. There is a good talk about the measurement of information, the understanding of entropy and the Markov process (there is no such thing in the company now, I'll go back and find it and make it up). Mastering this knowledge, it is good for you to understand the cross entropy and relative entropy, which look similar but easy to confuse. At least you know why many machine learning algorithms like to use cross entropy as cost function ~可是无论陈启如何询问，陈文羽都是支支吾吾的并不说，只是让陈启早点回去。CBS正式续订剧集《犯罪现场调查：网络》。