Written in front: Thank you @ challons for the review of this article and put forward valuable comments. Let's talk a little bit about the big hot neural network. In recent years, the depth of learning has developed rapidly, feeling has occupied the entire machine learning "half". The major conferences are also occupied by deep learning, leading a wave of trends. The two hottest classes in depth learning ar
A feedforward neural network is a artificial neural network wherein connections the the between does not form a units. As such, it is different from recurrent neural networks.The Feedforward n
modelUnsupervised Learning (cluster)1. Other Clusters:SomAutoencoder2, deep learning, divided into three categories, the method is completely different, even neurons are not the sameFeed forward Prediction: see 3Feedback prediction: Stacked sparse Autoencoder (cluster), predictive coding (belong to RNN, cluster)Interactive prediction: Deep belief net (DBN, genus Rnn, clustering + classification)3. Feedforward Neural
network prediction
Total number of layers $L $-neural network (including input and output layers)
$\theta^{(L)}$-the weight matrix of the $l$ layer to the $l+1$ layer
$s _l$-the number of neurons in the $l$ layer, note that $i$ counts from 1, and the weights of bias neurons are not counted in the regular term.
The number of neurons in the _{l+1}$
completely different, even neurons are not the sameFeed forward Prediction: see 3Feedback prediction: Stacked sparse Autoencoder (cluster), predictive coding (belong to RNN, cluster)Interactive prediction: Deep belief net (DBN, genus Rnn, clustering + classification)3. Feedforward Neural Network (classification)PerceptronBpRbfFeedforward Deep learning:convolutional Neu
LSTM unit.for the gradient explosion problem, it is usually a relatively simple strategy, such as Gradient clipping: in one iteration, the sum of the squares of each weighted gradient is greater than a certain threshold, and to avoid the weight matrix being updated too quickly, a scaling factor (the threshold divided by the sum of squares) is obtained, multiplying all the gradients by this factor. Resources:[1] The lecture notes on neural networks a
the appropriate connection rights, thresholds and other parameters. In contrast, the structure Adaptive Network also takes the network structure as one of the learning goals, and wants to find the network structure which is most fit for the data characteristic during the training.4.6 Recurrent
absrtact : This paper will analyze the basic principle of deep neural network to recognize graphic images in detail. For convolutional neural Networks, this paper will discuss in detail the principle and function of each layer in the network in the image recognition, such as the convolution layer (convolutional layers)
absrtact : This paper will analyze the basic principle of deep neural network to recognize graphic images in detail. For convolutional neural Networks, this paper will discuss in detail the principle and function of each layer in the network in the image recognition, such as the convolution layer (convolutional layers)
Recurrent neural NetworksIn traditional neural networks, the model does not focus on the processing of the last moment, what information can be used for the next moment, and each time will only focus on the current moment of processing. For example, we want to classify the events that occur at every moment in a movie, and if we know the event information in front
emerging.
The text of the formula looks a bit around, below I send a detailed calculation process diagram.Refer to this: Http://www.myreaders.info/03_Back_Propagation_Network.pdf I did the finishing
Here is the calculation of a record, immediately update the weight, after each calculation of a piece is immediately updated weight. In fact, the effect of batch update is better, the method is not to update the weight of the case, the record set of each record is calculated once, the added valu
skills ("Alchemy") in convolutional networks. The principle behind some important assistant technique is explained. The assistant techniques include gradient descent, learning rate, activation function, initialization of network parameters, batch normalization, data enhancement, visual training process analysis, fine-tune, and many other network tuning techniques. After completing this course, students can
Objectivethe first article of the 2017.10.2 Blog Park, Mark. Since the lab was doing NLP and medical-related content, it began to gnaw on the nut of NLP, hoping to learn something. Follow-up will focus on knowledge map, deep reinforcement learning and other content.To get to the point, this article is a introduciton of using neural networks to deal with NLP problems. Hopefully, this article will have a basic concept of natural language processing (usi
composition is not necessarily obvious. Words are obviously combined in some way, such as adjectives to modify nouns, but if you want to understand what the more advanced features really mean, it is not as obvious as computer vision.In this view, convolutional neural networks do not seem to be suitable for NLP tasks. Recursive neural networks (recurrent
3).
Figure 3 | from image to text. The title generated by the Recurrent Neural Network (RNN) is extracted from a test image by convolution neural Network (CNN), RNN the top of the image to "translate" into text (top). When RNN gives the focus ability to give different posit
at distinguishing between real data and generating data, while the generator keeps learning, making it more difficult to distinguish the discriminative machine. Sometimes, this mechanism works well, because even complicated noise-like modes are predictable, but it is more difficult to differentiate the generated data similar to the input data features. Gan is hard to train-You not only need to train two networks (they may all have their own problems), but also have a good balance between their
Introduction to recurrent neural networks (RNN, recurrent neural Networks)
This post was reproduced from: http://blog.csdn.net/heyongluoyao8/article/details/48636251
The cyclic neural network (
threshold that adjusts the sensitivity of the neuron. The generalized recurrent neural network can be established by using radial and linear neurons, and this kind of neural network is suitable for the application of function approximation. Radial basis functions and compet
()
Plt.plot (Np.arange (0,len (xtest)), Predict_resutl, ' ro--', label= ' Predict number ')
Plt.plot (Np.arange (0,len (xtest)), Ytest, ' ko-', label= ' true number ')
plt.legend ()
Plt.xlabel ("x")
Plt.ylabel ("y")
plt.show ()
Let's make a prediction with this topic and draw the following figureAnalysis
For mod in fnn.modules:
print ("Module:", mod.name)
if Mod.paramdim > 0:
print ("--parameters:", Mod.params) for
Conn in fnn.connections[mod]:
print ("-connection to", Conn.out
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