Artificial Neural Networks for Beginners - MNIST Dataset: Unable to read file 'myWeights'. No such file or directory. Can anyone help me understand what I should do successfully load weights?

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AndreasM 2015-8-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/232796-artificial-neural-networks-for-beginners-mnist-dataset-unable-to-read-file-myweights-no-such-f

回答： Claire Reinhardt 2016-5-14

I am trying to follow http://blogs.mathworks.com/loren/2015/08/04/artificial-neural-networks-for-beginners/

Hopefully someone has successfully managed to follow the example and can point me in the right direction.

I have imported the data.

tr = csvread('train.csv', 1, 0); % read train.csv sub = csvread('test.csv', 1, 0); % read test.csv

Conducted data preparation.

Used the Neural Network Toolbox GUI API to create myNNfunc.m and myNNscript.m

I created VisualizingLearnedWeights.m. When I run this file I get an error message load myWeights % load the learned weights W1 =zeros(100, 28*28); % pre-allocation W1(:, x1_step1_keep) = IW1_1; % reconstruct the full matrix figure % plot images colormap(gray) % set to grayscale for i = 1:25 % preview first 25 samples subplot(5,5,i) % plot them in 6 x 6 grid digit = reshape(W1(i,:), [28,28])'; % row = 28 x 28 image imagesc(digit) % show the image end

the error message is: % Error using load % Unable to read file 'myWeights'. No such file or directory.

% Error in VisualizingLearnedWeights (line 7) % load myWeights % load the learned weights

In the workspace I can not see any weights. But I find W1. I have tried to search thru every script in order to find weights.

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Answer 1

Toshiaki Takeuchi 2015-9-1

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/232796-artificial-neural-networks-for-beginners-mnist-dataset-unable-to-read-file-myweights-no-such-f#answer_190951

You should remove "load myWeights" from your script. The blog post is like a cooking show, and it is just loading the pre-computed variables into memory. All it does is to load the following variables.