because there is no GPU, so in the CPU training their own data, the middle encountered a variety of pits, fortunately did not give up, This process is documented in this article. 1, under the CPU configuration faster r-cnn, reference blog: http://blog.csdn.net/wjx2012yt/article/details/52197698#quote2, in the CPU training data set, need to py-faster-rcnn within the Roi_pooling_layer and Smooth_l1_loss_layer changed to the CPU version,and recompile. Th
The receptive field is a kind of thing, from the angle of CNN visualization, is the output featuremap a node response to the input image of the area is to feel wild.For example, if our first layer is a 3*3 core, then each node in the Featuremap that we get through this convolution is derived from this 3*3 convolution core and the 3*3 region of the original image, then we call this Featuremap node to feel the wild size 3*3If you go through the pooling
. Summarize the above experimental results:4. The following should be the principle of Li Feifei's Ted speech:5. Some recommendations for working with small datasets:V: Squeezing out of the last few Percent1. Using a small size filter is much better than using a large size filter, and a small size filter can increase the number of non-linearities and reduce the parameters that need to be trained (imagine a 7*7 patch with a 7 The filter convolution of the *7, and the filter convolution of the thr
Import TensorFlow as TF import numpy as NP import OS os.environ[' tf_cpp_min_log_level '] = ' 2 ' from Tensorflow.examples.tut Orials.mnist import Input_data mnist = Input_data.read_data_sets ("mnist_data/", One_hot=true) TrX, TrY, TeX, TeY = mnist. Train.images, Mnist.train.labels, Mnist.test.images, Mnist.test.labels #把上述trX和teX的形状变为 [ -1,28,28,1],-1 indicates that the number of input pictures is not considered
, 28x28 is a picture of the long and wide pixels, # 1 is the number of channels (ch
Original sourceThank the Author ~Faster r-cnn:towards Real-time Object Detection with region Proposalnetworksshaoqing Ren, kaiming He, Ross girshick, Jian SuNSummaryAt present, the most advanced target detection network needs to use the region proposed algorithm to speculate on the target location, such as sppnet[7] and fast r-cnn[5] These networks have reduced the running time of the detection
, more efficient
Remove FC, can handle various scales of input
CNN is no longer just classifying, and doing regression, and also doing regression on location
Method Summary
Basic process
figure 1. Two-Step coarse-to-fine text localization results bythe proposed cascaded convolutional text Network (CCTN). Acoarse Text Network
TravelseaLinks: https://zhuanlan.zhihu.com/p/22045213Source: KnowCopyright belongs to the author. Commercial reprint please contact the author for authorization, non-commercial reprint please specify the source.In recent years, the Deep convolutional Neural Network (DCNN) has been significantly improved in image classification and recognition. Looking back from 2014 to 2016 of these two years more time, has sprung up R-
Original page: Visualizing parts of convolutional neural Networks using Keras and CatsTranslation: convolutional neural network Combat (Visualization section)--using Keras to identify cats
It is well known, that convolutional neural networks (CNNs or Convnets) has been the source of many major breakthroughs in The field of deep learning in the last few years, but they is rather unintuitive to reason on for most people. I ' ve always wanted to break th
redundant and unimportant parameters. Based on the method of low rank decomposition (Low-rank factorization), matrix/tensor decomposition is used to estimate the most informative parameters in deep CNN. Based on the migration/compression convolution filter (Transferred/compact convolutional filters) method, a special structure convolution filter is designed to reduce the complexity of storage and computation. Knowledge refinement (knowledge distillat
Welcome reprint, Reprint Please specify: This article from Bin column Blog.csdn.net/xbinworld.Technical Exchange QQ Group: 433250724, Welcome to the algorithm, technology interested students to join.Recently, the next few posts will go back to the discussion of neural network structure, before I in "deep learning Method (V): convolutional Neural network CNN Class
extent will find some of the deeper learning rate is lower. The design of the deep residual network is to overcome the problem that the learning rate is low and the accuracy rate cannot be improved effectively because of the depth of the network, also known as the degradation of the network. Even in some scenarios, the increase in the number of layers in the
using the API functions provided by the Windows SDK GetAdaptersInfo () can obtain the network card name of all network cards, network card description, network card MAC address, network card IP, network card type and other informa
, so we mainly explain the implementation of Lenet-5 behind.
first, the theoretical stage
As an introductory article on CNN, there is no intention to nag too much, because what weights share, local feel wild, talk so much, are the related theories of biology, look at those things, most beginners have been bored. convolutional neural Network related blog post is also a lot of, but speaking, basically is copi
adversarial nerworks 5.1 dcgan Ideas
DCGAN[1] This paper does not seem to be a great innovation, but in fact, its open source code is now used and the most frequent reference. All this must be attributed to the work of Lapgan [2] More robust of engineering experience to share. That is, Dcgan,deep convolutional generative adversarial Networks, the work [1], points out many of the important architectural designs for this unstable learning approach to GAN and the specific experience of this
model structures in Figure 1, we need to look at one of the deep-learning Troika ———— LeCun's lenet network structure. Why to mention LeCun and lenet, because now visually these artifacts are based on convolutional neural Network (CNN), and LeCun is CNN Huang, Lenet is lecun to create the
Objective
From the understanding of convolution nerves to the realization of it, before and after spent one months, and now there are still some places do not understand thoroughly, CNN still has a certain difficulty, not to see which blog and one or two papers on the understanding, mainly by themselves to study, read the recommended list at the end of the reference. The current implementation of the CNN i
certain assumption. What assumption? You'll know later.1. CNN FeaturesCNN stands out from traditional NN in 3 area:
Sparse Interaction (Connection)
Parameter sharing
Equivariant representation.
Actually the third feature is more like a result of the first 2 features. Let's go through them one by one.
Fully Connected NN
nn with Sparse connection
Sparse Interaction ,
are connected to hidden layers.CNN's MutationDue to a significant portion of the hidden layer in the RELU,CNN, the value will be 0. Thus, in the measurement of relevance, it is found to be such a child.On the left is the original, the middle is the correlation between layer1 and layer2, note that the correlation with the weight parameter is different things. The more white the dots are approaching 0. Then rearrange the dependencies, as shown in the i
Display and disappear of qq network status bar of a mobile phone; display when there is no network; automatically disappear when there is a network; click the network bar to set the network, qq
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