资源简介
基于MATLAB的神经网络池化过程示例基于MATLAB的神经网络池化过程示例
代码片段和文件信息
%VL_NNPOOL CNN poolinng.
% Y = VL_NNPOOL(X POOL) applies the pooling operator to all
% channels of the data X using a square filter of size POOL. X is a
% SINGLE array of dimension H x W x D x N where (HW) are the
% height and width of the map stack D is the image depth (number
% of feature channels) and N the number of of images in the stack.
%
% Y = VL_NNPOOL(X [POOLY POOLX]) uses a rectangular filter of
% height POOLY and width POOLX.
%
% DZDX = VL_NNPOOL(X POOL DZDY) computes the derivatives of the
% block projected onto DZDY. DZDX and DZDY have the same dimensions
% as X and Y respectively.
%
% VL_NNCONV(... ‘option‘ value ...) takes the following options:
%
% ‘Stride‘:: 1
% The output stride (downsampling factor). It can be either a
% scalar for isotropic downsampling or a vector [STRIDEY
% STRIDEX].
%
% ‘Pad‘:: 0
% The amount of input padding. Input images are padded with zeros
% by this number of pixels on all sides before the convolution is
% computed. It can also be a vector [TOP BOTTOM LEFT RIGHT] to
% specify a different amount of padding in each direction. The
% size of the poolin filter has to exceed the padding.
%
% ‘Method‘:: ‘max‘
% Specify method of pooling. It can be either ‘max‘ (retain max value
% over
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