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From the defender's point of view, this type of attack has proved (so far) to be very problematic, because we do not have effective methods to defend against this type of attack. Fundamentally speaking, we do not have an effective way for DNN to produce good output for all inputs. It is very difficult for them to do so, because DNN performs nonlinear/nonconvex optimization in a very large space, and we have not taught them to learn generalized high-level representations. You can read Ian and Nicolas's in-depth articles (http://www.cleverhans.io/security/privacy/ml/2017/02/15/why-attaching-machine-learning-is-easier-than-defending-it.html) to learn more about this.“姑获鸟”是来自中国古代神话传说中的妖怪，有时以九头的样子显形。明代《本草纲目》里提到了它的由来，说是死去产妇的执念所化，抱着婴儿在夜里行走，怀抱里婴儿的哭声就化成了姑获鸟的叫声。《姑获鸟》根据这样的民间传说改编而来，母亲（穆婷婷饰演）由于难以接受孩子流产的事实，由此产生了一系列的精神问题，从而被别有用心之人利用，但最终在丈夫（樊少皇饰演）的关怀和自身母爱天性的帮助下康复。忽然，他侧耳倾听外面，跟着一跃而起，猫着腰出了山洞。? The website is changing, the audience is changing, and the creators are also changing. Today's audience is not in the age when information was relatively isolated as we did at the beginning. They are in an information age. The relationship between people on the Internet is getting closer and closer. As a result, they are more and more eager to communicate with others, express themselves, desire others to identify with themselves, and people are less and less willing to be isolated. I can put forward a phenomenon that when a person plays with obstacles, the people around him are also willing to be a repeater, for fear that they will not be able to keep up with the topic and will be despised and isolated. On the barrage, we will find that there are really many repeater machines ~ ~ ha ha. And some of the barrages, to be honest, have already seen bad, but they are still happy to knock on the keyboard and press enter. Finally, I also began to click to close the barrages.鲁三吓了一跳，瞪大眼睛看着她：小姐忒精明一个人，怎么这样糊涂败家起来？秦旷也着忙，咕咚一下将口中鸡汤咽下去。　　该相信什麽？