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过去曾是黑帮成员的东哲，努力洗清黑暗的过去，和天使般善良的妻子智秀过着平凡的生活。某天妻子智秀遭到绑架。不久，一通陌生来电表示要付东哲一笔钱，要求东哲将妻子卖给他…东哲将用行动证明绑匪惹错了人！却被一人上前阻止了。"Web Security" CSRF Attack and Defense, the First Defense Line for Web SecurityAt present, in many cities in China, the construction of 5G base stations has been in full swing.欠条。Demo Xia: I downloaded all the popular frameworks at present. I ran for the examples in different frames and looked at the results. I just thought it was good. Then I thought, well, in-depth learning is just like that. It's not too difficult. This kind of person, I met a lot during the interview, many students or just changed careers came up to talk about a demo, handwritten number recognition, CIFAR10 data image classification and so on, but you asked him how the specific process of handwritten number recognition was realized? Is the effect now good and can it be optimized? Why should the activation function choose this, can it choose another? Can you explain the principle of CNN briefly? I'm overwhelmed.