convolutional neural network theory

In this blog post we briefly analyze the class--layers of the last network structure in the TINY_CNN convolutional neural network model.First of all, layers can be called a layer structure of the vector, that is, the layer structure of the container. Because convolutional

AlexNet: (ILSVRC Top 5 test error rate of 15.4%) the first successful display of the convolutional neural network potential network structure. key point: with a large amount of data and long-time training to get the final model, the results are very significant (get 2012 classification first) using two GPU, divide

Original articleReprint please register source HTTP://BLOG.CSDN.NET/TOSTQ the previous section we introduce the forward propagation process of convolutional neural networks, this section focuses on the reverse propagation process, which reflects the learning and training process of neural networks. Error back propagation method is the basis of

Turn from: The Heart of the machine Introduction Frankly speaking, I can't really understand deep learning for a while. I look at relevant research papers and articles and feel that deep learning is extremely complex. I try to understand neural networks and their variants, but still feel difficult. Then one day, I decided to start with a step-by-step basis. I break down the steps of technical operations and manually perform these steps (and calcula

subsequent identification process. Some scholars also combine evolutionary computing theory with a neuro-cognitive machine, which makes the network pay attention to the different characteristics to help improve the distinguishing ability by weakening the training and learning of repetitive excitation features. All of these are the development process of neuro-cognitive machine, and

1. Target positioning 1.1 Introduction to classification, positioning and testing -Image classificationImage classification, is to give you a picture, you determine the target category, such as cars, cats and so on.-Classification with localizationPositioning classification, not only to determine the target category, but also to output the position of the target object, such as the box up.-DetectionDetection, there may be multiple objects in the picture, you need to find them out. 1.2 Position

convolutional Neural Networks (convolution neural network, CNN) have achieved great success in the field of digital image processing, which has sparked a frenzy of deep learning in the field of natural language processing (Natural Language processing, NLP). Since 2015, papers on deep learning in the field of NLP have e

Kalchbrenner ' s PaperKal's article cited a high number of citations, he proposed a network model called DCNN (Dynamic convolutional neural Networks), in the previous (Kim's Paper) experimental results Section also verified the effectiveness of this model. The subtleties of this model lie in the way of pooling, using a method 动态Pooling called.Is the model of th

biased term, followed by a nonlinear function. If you use $h ^{k}$ to represent the feature map of the $k $ layer, the corresponding filter is determined by the $W ^{k}$ and bias $b _{k}$, then the feature map $h ^{k}$ can be computed from the next (using Tanh for nonlinear functions):$h _{ij}^{k}=tanh (w^{k}*x) _{ij}+b_{k}$In order to get a richer representation of the data, each hidden layer is usually composed of multiple feature graphs: $\{h^{\text{(k)}},k=0,... k\}$. The weight $W $ is rep

Refer to:Https://towardsdatascience.com/the-fall-of-rnn-lstm-2d1594c74ce0(The fall of Rnn/lstm)"hierarchical neural attention encoder", shown in the figure below:Hierarchical neural Attention EncoderA better-to-look-into-the-past is-to-use attention modules-summarize all past encoded vectors into a context vector Ct.Notice There is a hierarchy of attention modules here, very similar to the hierarchy of

edge to 256 D to get B, and then in the center of B take 256*256 square picture to get C, and then randomly extract 224*224 on C as a training sample, and then in the combination of image level inverse increase the sample to achieve data gain. This gain method is 2048 times times the sample increase, allowing us to run a larger network.(2) Adjust the RGB valueThe specific idea is: To do PCA analysis of three channel, get the main component, make some

C ++ convolutional neural network example: tiny_cnn code explanation (10) -- layer_base and layer Class Structure Analysis In the previous blog posts, we have analyzed most of the layer structure classes. In this blog post, we plan to address the last two layers, it is also the two basic classes layer_base and layer that are at the bottom of the hierarchy for a b

similar to the dimensionality reduction) method. Maximum pooling divides the input image into overlapping image matrix blocks, and each sub-region outputs its maximum value. The two reasons why the maximum pooling method is very effective in the visual processing problem are:(1) Reduce the computational complexity of the upper level by reducing the non-maximum value.(2) The result of pooling supports translation invariance. In the convolution layer, each pixel point has 8 orientations that can

content feature extraxtor or style feature extractor effect is not the same. We find that matching the "style representations up" higher layers in the network preserves local images creasingly large scale, leading to a smoother and more continuous visual experience. Accordingly, Conv (1-5) _1 was chosen as style layer The following figure shows the different effects of different conv layer as content layer: different initialization methods In the exp

Weilin huang--"TIP2015" text-attentional convolutional neural Network for Scene Text Detection)Directory Author and RELATED LINKS Method Summary Innovation points and contributions Method details Experimental results Question Discussion Author and RELATED LINKS Summary and Harvest Point Author Supplemental Information

homepage: http://www0.cs.ucl.ac.uk/staff/d.silver/web/Home.html5. Chris Olah, who received the Peter Thiel Scholarship, has several blogs about understanding and visualizing neural Networks: Calculus on Computational graphs:backpropagation,understanding LSTM Networks, visualizing Mnist:an exploration of dimensionality reduction,understanding convolutionsAddress: http://colah.github.io/archive.html6. Why should I focus on interest feedsPublished the h

introduces the Yolo algorithm process, which is a review of the previous sections. Shows the network structure, including two anchor boxes. For each grid call, get 2 predicted bounding boxes. Get rid of Low Probability predictions. For each class (pedestrian, car, motorcycle) use non-Max suppression to generate final predictions. 10. region proposals The sliding window algorithm previously introduced scans each area of the original image, even ar

layer after two-dimensional convolution results Unlike the simple Max-pooling method after the first layer, the pooling of the subsequent convolution layer is a dynamic pooling method , which derives from the reference [1]. Properties of Structure II Keep the word order information; More general, in fact structure I is a special case of Structure II (cancellation of the specified weight parameters); Experimental section1. Model Training and parameters

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