than Max equals Max.Because it is time-consuming to generate random numbers from a computer, it is generally implemented in the first way, due to the acceleration of consideration.But the inverse of the first method function is 0, and the gradient can not be propagated in reverse. In addition, the gradient has a cumulative effect, that is, the gradient with a certain amount of noise, and noise is generally considered to obey the normal distribution, so, multiple cumulative gradient to the avera
First, CNN's Principle 1, CNN thought:(1) Using Hopfield neural network and CAA, nonlinear dynamics of Hopfield (mainly for optimization problems, such as NP problems such as travel quotient), the concept of Hopfield energy function, Hopfield solves the problem of analog circuit implementation.b, CA cell automata, local connection time and space are discrete dynamics system, CNN borrowed from CA's cell concept and locality, consistency, parallelism an
At present, the rise of artificial intelligence is mainly based on the development of deep learning, but this method does not allow the computer to learn a small number of samples like humans can generalize knowledge into many kinds of problems, which also means that the system application scope is limited. Recently, vicarious, a well-known AI startup company, published a new probabilistic generation model in science. The new model has the ability of recognition, segmentation and reasoning, and
set, the KL distance is the indicator that describes the diversity, thus reducing the amount of computation. Traditional deep learning will need to do before the training of data enhancement, each sample is equal; This article contains some data enhancement not only does not play a good role, but brings the noise, it needs to do some processing, but also some of the data does not need to be enhanced, which reduces noise and saves calculation.
Qa
Q: Why did the active learning not b
modulation gate, memory cell and output gate.Each of the LSTM layers have hidden states.3. Loss function and optimizationThe conditional probability of the poses Yt = (y1, ..., YT) given a sequence of monocular RGB images Xt = (x1, ..., XT) up to time t.Optimal Parameters:The hyperparameters of the Dnns:(pk,φk) is the ground truth pose.(p?k,φ?k) is the estimated ground truth pose.κ (the experiments) is a scale factor to balance the weights of positions and orientations.N is the number of sample
Idea: Using RNN to model users ' browsing order, using FNN to simulate CF, two networks learning togetherRNN Network structure:The state of the output layer represents a page that a user browses, which can be seen as a one-hot representation, and STATE0 to 3 is the page that is browsed in turn. Because RNN input number is limited, if the user browses too many pages, then will lose the first of those pages, paper in order to retain this part of the inf
of the word vector effect is also possible.Channel (Channels): An image can take advantage of (R, G, B) as a different channel, while the input channel of the text is usually a different way of embedding (such as Word2vec or glove), In practice, the use of static word vectors and fine-tunning-word vectors as different channel methods are also used.One dimensional convolution (conv-1d): The image is a two-dimensional data, the word vector expression of the text is one-dimensional data, so in tex
"Aggregated residual transformations for Deep neural Networks" is saining Xie and other people in 2016 in the public on the arxiv:Https://arxiv.org/pdf/1611.05431.pdf
Innovation Point1. The use of group convolution on the basis of traditional resnet, without increasing the number of parameters under the premise of obtaining a stronger representation ability
NamedThis paper presents a resnet improved network
Minimalist notes Deepid-net:object detection with deformable part Based convolutional Neural Networks
Paper Address Http://www.ee.cuhk.edu.hk/~xgwang/papers/ouyangZWpami16.pdf
This is the CUHK Wang Xiaogang group 2017 years of a tpami, the first hair in the CVPR2015, increased after the experiment to cast the journal, so the contrast experiment are some alexnet,googlenet and other early network models, FAS
than the exercises, and you'll likely struggle to solve some problems. That's annoying, but, of course, patience in the face of such frustration are the only-to truly understand and internal Ize a subject.With this said, I don ' t recommend working through all the problems. What ' s even better are to find your own project. Maybe want to use neural nets to classify your music collection. Or to predict stock prices. Or whatever. But find a project, ab
Writing back-propagation neural networks using java (III)Confucius said, I am in the three provinces of Japan. If we deal with programs, in addition to three provinces a day, we need to save my code three days a day. Check whether the code can be simpler, easier to understand, easier to expand, more common, whether the algorithm can be optimized, and whether the structure can be abstracted. The code is more
=Datetime.datetime.now ()Print("Time Cost :") Print(Tend-tstart)Analysis:1. Forward Propagation: for in range (1, Len (synapselist), 1): Synapselist is a weight matrix.2. Reverse propagationA. Calculating the error of the output of the hidden layer on the inputdef GETW (Synapse, Delta): = [] # traverse the hidden layer each hidden unit to each output weight, such as 8 hidden units, each hidden unit two output each has 2 weights for in Range (Synapse.shape
ImageNet classification with deep convolutional neural Networks reading notes(2013-07-06 22:16:36) reprint
Tags: deep_learning imagenet Hinton
Category: machine learning
(after deciding to read a paper each time, the notes are recorded on the blog.) )This article, published in NIPS2012, is Hinton and his students are using deep learning in response to doubts about deep learn
of the "object" in the "the position with the maximum score
Use a cost function this can explicitly model multiple objects present in the image.
Because there may be many objects in the graph, the multi-class classification loss is not applicable. The author sees this task as multiple two classification questions, loss function and classification score as followsTrainingMuti-scale TestExperimentClassification
MAP on VOC test: +3.1% compared with [56]
MAP on VOC test: +7.
Wang, Min, Baoyuan Liu, and Hassan Foroosh. "Factorized convolutional neural Networks." ArXiv preprint (2016).
This paper focuses on the optimization of the convolution layer in the deep network, which has three unique features:-Can be trained directly . You do not need to train the original model first, then use the sparse, compressed bits and so on to compress.-Maintain the original input and output of th
The process of convolution is the process of extracting the corresponding feature, and obtains the high dimensional eigenvector.The process of deconvolution is in fact a sparse coding process, which is to restore the feature vectors obtained by convolution to the original input image by weighting
About dilate convolution visible this blog post https://zhuanlan.zhihu.com/p/23795111 and https://github.com/vdumoulin/conv_arithmeticI think since dilate convolution can change the size of the kernel
A recent article on data enhancement is more interesting: here is the core code implementation and implementation details, which can be accessed by itself:Training neural Networks with Very Little data–aThe general meaning of the article is to transform the Cartesian coordinate system into the image in polar coordinate system through some transformation, which is directly given by the following formula:
The
weight update, is by a lot of weight multiplied, the smaller, a bit like the gradient disappears meaning (this sentence is I added) 8: If training rnn or LSTM, It is important to ensure that the norm of the gradient is constrained to 15 or 5 (provided that the gradient is first normalized), which is significant in RNN and lstm. 9: Check the gradient below, if it is your own calculation. 10: If you use LSTM to solve the problem of long-time dependencies, remember to initialize bias 12: As far as
Bengio, LeCun, Jordan, Hinton, Schmidhuber, Ng, de Freitas and OpenAI had done Reddit AMA's. These is nice places-to-start to get a zeitgeist of the field.Hinton and Ng lectures at Coursera, UFLDL, cs224d and cs231n at Stanford, the deep learning course at udacity, and the sum Mer School at IPAM has excellent tutorials, video lectures and programming exercises that should help you get STARTED.NB Sp The online book by Nielsen, notes for cs231n, and blogs by karpathy, Olah and Britz has clear expl
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