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[人脸识别]17_作业讲解题2：参数初始化与前向传播、反向传播
17_作业讲解题2：参数初始化与前向传播、反向传播
[人工智能]人脸识别-Python17/32
![[人脸识别]16_单神经元神经网络(logistic)分类作业流程介绍](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/2b427277380543dc88bf1e9a0e2aa12b~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=WqmfsCJBvPMcKVCTTp4HS0l90VA%3D)
App03:50![[人脸识别]17_作业讲解题2：参数初始化与前向传播、反向传播](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/cf6421b148c44256b15e7c574421ec51~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=J0%2F%2FLLOiulyjQLNASkIqRPgwnmo%3D)
App10:08![[人脸识别]18_作业讲解题2：优化迭代实现、model逻辑实现](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/c6284559eadc492cba05df270fcf72a6~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=eHK2viKVtKssNdM4WiiZD4Z0UWg%3D)
App08:42![[人脸识别]19_总结](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/d7d3198a9fe041738456871b3f77c0ae~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=IKycxABFFboinPNHVTu1WLijfR0%3D)
App05:21![[人脸识别]20.浅层神经网络](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/cc3afacff2f744189d167e523e0ec2f0~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=ZmHkhKOkZwOQRwfCKg9Zt9DbbNo%3D)
App00:17![[人脸识别]21_浅层神经网络表示](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/b55e17dd8d3243458c0095a8bbe0faa0~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=TNIwdYOxf35tMBkK5UrS9lgTGwg%3D)
App08:19![[人脸识别]22_浅层神经网络的前向传播](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/e8362bea70544ab6b1cbec525971afba~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=mSSOf1DNYEhFjpiy1hT4VmxQCSQ%3D)
App06:54![[人脸识别]23_激活函数的选择](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/38514f38e996472baafd0454d6f4765f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=umnksKL2x%2B0uLmyul8OTXfa%2Bu6Q%3D)
App11:16![[人脸识别]24_浅层神经网络的反向传播](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/2b1c2e3f7a234c4988b19a4165fd659b~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=77gIU9hjCrlvUhr%2BY%2FFzg8M0zVQ%3D)
App10:25![[人脸识别]25_作业介绍](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/bb21ab3a34a54c659c8f6e29987272aa~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=ks7tUKVXtikinCUy4pEDuiHEFkw%3D)
App02:41![[人脸识别]26_作业实现：初始化模型与前向传播](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/ee1534b4123f4f8ab13a39edd0c4e0c5~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=xAMnjyP5EOpA8i8YU5I8VIi6iVo%3D)
App11:59![[人脸识别]27_作业实现：反向传播与更新梯度](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/921360b3adf5466bb67d7bfbded4d045~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=I8JykMPEpk6LaVKIr%2FIS5VVyqfI%3D)
App14:14![[人脸识别]28_作业实现：网络模型逻辑实现](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/4e9aa37965cd4a348523b694e270d405~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=wWUj5u%2Bxi2DegH4z2nxp4NjJH0Q%3D)
App05:33![[人脸识别]29_总结](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/4a79f3668c1b47aa89fa58d96cd11615~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=kJAKH4O4DxAkYMVF17FowJZl1QM%3D)
App02:34![[人脸识别]30_深层神经网络表示](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/83716f9a626b40b18fac78a88cf2589e~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=DAWNTisjz%2BS556XWaMVein0pipQ%3D)
App08:16![[人脸识别]31_深层神经网络的反向传播过程](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/d4fffd0d224649828c7f31465bcc6454~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=gYB%2BDaux0gmS9R8PVQnSL17pj80%3D)
App05:26![[人脸识别]32_参数初始化与超参数介绍](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/1aa5ca2df4dc4bc3812450ba1c381129~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202409071402242CEEB68726AD707756D5&requestFrom=704&version_code=80402&x-expires=1757224945&x-signature=%2FIVu%2FiBI2Us9FUcczDASwvO1VLE%3D)
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