第四周:Special applications: Face recognition & Neural style transfer 什么是人脸识别?(What is face recognition?) 欢迎来到第四周,即这门课卷积神经网络课程的最后一周.到目前为止,你学了很多卷积神经网络的知识.我这周准备向你展示一些重要的卷积神经网络的特殊应用,我们将从人脸识别开始,之后讲神经风格迁移,你将有机会在编程作业中实现这部分内容,创造自己的艺术作品. 让我们先从人脸识别开始,我这里有一个有意思的演…
Keras tutorial - the Happy House Welcome to the first assignment of week 2. In this assignment, you will: Learn to use Keras, a high-level neural networks API (programming framework), written in Python and capable of running on top of several lower-l…
Convolutional Neural Networks: Application Welcome to Course 4's second assignment! In this notebook, you will: Implement helper functions that you will use when implementing a TensorFlow model Implement a fully functioning ConvNet using TensorFlow (…
Deep Learning & Art: Neural Style Transfer Welcome to the second assignment of this week. In this assignment, you will learn about Neural Style Transfer. This algorithm was created by Gatys et al. (2015) (https://arxiv.org/abs/1508.06576). In this as…
Residual Networks Welcome to the second assignment of this week! You will learn how to build very deep convolutional networks, using Residual Networks (ResNets). In theory, very deep networks can represent very complex functions; but in practice, the…
Convolutional Neural Networks: Step by Step Welcome to Course 4's first assignment! In this assignment, you will implement convolutional (CONV) and pooling (POOL) layers in numpy, including both forward propagation and (optionally) backward propagati…
Learning Goals Understand multiple foundational papers of convolutional neural networks Analyze the dimensionality reduction of a volume in a very deep network Understand and Implement a Residual network Build a deep neural network using Keras Implem…
Face Recognition for the Happy House Welcome to the first assignment of week 4! Here you will build a face recognition system. Many of the ideas presented here are from FaceNet. In lecture, we also talked about DeepFace. Face recognition problems com…
[解释] 应该是same padding 而不是 valid padding . [解释] 卷积操作用的应该是adding additional layers to the network ,而是应该添加跳跃连接(Skip connection). [解释] 这一题感觉四个选项都是对的,但是提交答案的时候,显示答案有错误.欢迎留言讨论. ---------------------------------------------------------- 参考链接: 1.https://www.c…
Learning Goals Understand the convolution operation Understand the pooling operation Remember the vocabulary used in convolutional neural network (padding, stride, filter, ...) Build a convolutional neural network for image multi-class classification…
[解释] This allows us to learn to predict a person’s identity using a softmax output unit, where the number of classes equals the number of persons in the database plus 1 (for the final “not in database” class). 上述选项错误的原因: 1.plus 1的解释错误: 将某人的照片放进卷积神经网络…
[解释] 100*(300*300*3)+ 100=27000100 [解释] (5*5*3+1)*100=7600 [中文翻译] 您有一个输入是 63x63x16, 并 将他与32个滤波器卷积, 每个滤波器的维度为 7x7x16, 使用的步幅为 2, 没有填充.输出是多少? [解释] nH=nW=(63+2*0-7)/2 +1=29 output=29*29*32 [解释] (63+2p-7)/1 + 1=63  ---------> p=3 [解释] max pooling 操作,paddi…
Gradient Checking Welcome to this week's third programming assignment! You will be implementing gradient checking to make sure that your backpropagation implementation is correct. By completing this assignment you will: - Implement gradient checking…
1.项目介绍 神经风格转换 (NST) 是深部学习中最有趣的技术之一.它合并两个图像, 即 内容图像 C(content image) 和 样式图像S(style image), 以生成图像 G(generated image).生成的图像 G 将图像 C 的 内容与图像S的 样式组合在一起. 2.模型 利用迁移学习的技巧,模型采用预训练的VGG19网络.预训练的模型来自 MatConvNet. http://www.vlfeat.org/matconvnet/pretrained/ . 模型结…
Building your Deep Neural Network: Step by Step Welcome to your third programming exercise of the deep learning specialization. You will implement all the building blocks of a neural network and use these building blocks in the next assignment to bui…
Emojify! Welcome to the second assignment of Week 2. You are going to use word vector representations to build an Emojifier. Have you ever wanted to make your text messages more expressive? Your emojifier app will help you do that. So rather than wri…
Operations on word vectors Welcome to your first assignment of this week! Because word embeddings are very computionally expensive to train, most ML practitioners will load a pre-trained set of embeddings. After this assignment you will be able to: L…
Tuning process 下图中的需要tune的parameter的先后顺序, 红色>黄色>紫色,其他基本不会tune. 先讲到怎么选hyperparameter, 需要随机选取(sampling at random) 随机选取的过程中,可以采用从粗到细的方法逐步确定参数 有些参数可以按照线性随机选取, 比如 n[l] 但是有些参数就不适合线性的sampling at radom, 比如 learning rate α,这时可以用 log Andrew 很幽默的讲到了两种选参数的实际场景…
由于本章过长,分为两个部分,这是第一部分. 这几年提到RNN,一般指Recurrent Neural Networks,至于翻译成循环神经网络还是递归神经网络都可以.wiki上面把Recurrent Neural Networks叫做时间递归神经网络,与之对应的还有一个结构递归神经网络(recursive neural network).本文讨论的是前者. RNN是一种可以预测未来(在某种程度上)的神经网络,可以用来分析时间序列数据(比如分析股价,预测买入点和卖出点).在自动驾驶中,可以预测路线…
Tensorflow Welcome to the Tensorflow Tutorial! In this notebook you will learn all the basics of Tensorflow. You will implement useful functions and draw the parallel with what you did using Numpy. You will understand what Tensors and operations are,…
CNN综述文章 的翻译 [2019 CVPR] A Survey of the Recent Architectures of Deep Convolutional Neural Networks 翻译 综述深度卷积神经网络架构:从基本组件到结构创新 目录 摘要    1.引言    2.CNN基本组件        2.1 卷积层        2.2 池化层        2.3 激活函数        2.4 批次归一化        2.5 Dropout        2.6 全连接层…
Ahmet Taspinar Home About Contact Building Convolutional Neural Networks with Tensorflow Posted on augustus 15, 2017 adminPosted in convolutional neural networks, deep learning, tensorflow 1. Introduction In the past I have mostly written about ‘clas…
About this Course This course will teach you how to build convolutional neural networks and apply it to image data. Thanks to deep learning, computer vision is working far better than just two years ago, and this is enabling numerous exciting applica…
目录 概 主要内容 符号说明 的俩种表示 kernel orthogonal regularization orthogonal convolution Wang J, Chen Y, Chakraborty R, et al. Orthogonal Convolutional Neural Networks.[J]. arXiv: Computer Vision and Pattern Recognition, 2019. @article{wang2019orthogonal, title=…
第四周:深层神经网络(Deep Neural Networks) 深层神经网络(Deep L-layer neural network) 目前为止我们学习了只有一个单独隐藏层的神经网络的正向传播和反向传播,还有逻辑回归,并且你还学到了向量化,这在随机初始化权重时是很重要.本周所要做的是把这些理念集合起来,就可以执行你自己的深度神经网络. 严格上来说逻辑回归也是一个一层的神经网络,浅与深仅仅是指一种程度.有一个隐藏层的神经网络,就是一个两层神经网络.当我们算神经网络的层数时,我们不算输入层,我们只…
4. Neural Networks (part one) Content: 4. Neural Networks (part one) 4.1 Non-linear Classification. 4.2 Neural Model(神经元模型) 4.3 Forward Propagation 4.4 神经网络实现与或非门以及异或门 4.4.1 实现与或非门(AND/OR/NOT) 4.4.2 实现异或/同或门(XOR/XNOR) 4.5 Multi-class classification k…
http://handong1587.github.io/deep_learning/2015/10/09/training-dnn.html  //转载于 Training Deep Neural Networks  Published: 09 Oct 2015  Category: deep_learning Tutorials Popular Training Approaches of DNNs — A Quick Overview https://medium.com/@asjad/p…
On Explainability of Deep Neural Networks « Learning F# Functional Data Structures and Algorithms is Out!   On Explainability of Deep Neural Networks During a discussion yesterday with software architect extraordinaire David Lazar regarding how every…
CS231n Winter 2016: Lecture 5: Neural Networks Part 2 CS231n Winter 2016: Lecture 6: Neural Networks Part 3 by Andrej Karpathy 本章节主要讲解激活函数,参数初始化以及周边的知识体系. Ref: <深度学习>第八章 - 深度模型中的优化 Overview 1. One time setup activation functions, preprocessing, weig…
About this Course If you want to break into cutting-edge AI, this course will help you do so. Deep learning engineers are highly sought after, and mastering deep learning will give you numerous new career opportunities. Deep learning is also a new "s…