machine learning - How do neural networks learn specific features . . . That convolution responds to certain arrangements of these 1st-level features, e g two adjacent edges with different orientations are a corner You can think of the CNN-layers as a hierarchy where initial layers provide basic features the next layer detects compositions of these, the next layer detects compositions of the compositions and so on
7. 5. 2 Module Quiz - Ethernet Switching (Answers) 7 5 2 Module Quiz – Ethernet Switching Answers 1 What will a host on an Ethernet network do if it receives a frame with a unicast destination MAC address that does not match its own MAC address? It will discard the frame It will forward the frame to the next host It will remove the frame from the media It will strip off the data-link frame to check the destination IP address
convolutional neural networks - In a CNN, does each new filter have . . . Typically for a CNN architecture, in a single filter as described by your number_of_filters parameter, there is one 2D kernel per input channel There are input_channels * number_of_filters sets of weights, each of which describe a convolution kernel So the diagrams showing one set of weights per input channel for each filter are correct
What are bottlenecks in neural networks? In a CNN (such as Google's Inception network), bottleneck layers are added to reduce the number of feature maps (aka channels) in the network, which, otherwise, tend to increase in each layer This is achieved by using 1x1 convolutions with fewer output channels than input channels
What is a cascaded convolutional neural network? 3 The paper you are citing is the paper that introduced the cascaded convolution neural network In fact, in this paper, the authors say To realize 3DDFA, we propose to combine two achievements in recent years, namely, Cascaded Regression and the Convolutional Neural Network (CNN)
How to handle rectangular images in convolutional neural networks? I think the squared image is more a choice for simplicity There are two types of convolutional neural networks Traditional CNNs: CNNs that have fully connected layers at the end, and fully convolutional networks (FCNs): they are only made of convolutional layers (and subsampling and upsampling layers), so they do not contain fully connected layers With traditional CNNs, the inputs always need