4 classes of signals, 30 samples per class, each sample is a one-dimensional array with 100 points.
From a previous post (https://www.mathworks.com/matlabcentral/answers/331164-convolutional-1d-net) I found the following architecture for the network:
inputLayer=imageInputLayer([1 6000]);
c1=convolution2dLayer([1 200],20,'stride',1);
p1=maxPooling2dLayer([1 20],'stride',10);
c2=convolution2dLayer([20 30],400,'numChannels',20);
p2=maxPooling2dLayer([1 10],'stride',[1 2]);
f1=fullyConnectedLayer(500);
f2=fullyConnectedLayer(500);
s1=softmaxLayer;
outputLayer=classificationLayer;
convnet=[inputLayer; c1; p1; c2; p2; f1; f2; s1;outputLayer]
opts = trainingOptions('sgdm');
convnet = trainNetwork(allData',labels,convnet,opts);
Output:
convnet =
9x1 Layer array with layers:
1 '' Image Input 1x6000x1 images with 'zerocenter' normalization
2 '' Convolution 20 1x200 convolutions with stride [1 1] and padding [0 0]
3 '' Max Pooling 1x20 max pooling with stride [10 10] and padding [0 0]
4 '' Convolution 400 20x30 convolutions with stride [1 1] and padding [0 0]
5 '' Max Pooling 1x10 max pooling with stride [1 2] and padding [0 0]
6 '' Fully Connected 500 fully connected layer
7 '' Fully Connected 500 fully connected layer
8 '' Softmax softmax
9 '' Classification Output cross-entropy
I changed some of the parameters to adapt the networks for my samples, namely:
inputLayer=imageInputLayer([1 100]);
c1=convolution2dLayer([1 20],20,'stride',1);
p1=maxPooling2dLayer([1 20],'stride',10);
c2=convolution2dLayer([20 30],400,'numChannels',20);
p2=maxPooling2dLayer([1 10],'stride',[1 2]);
f1=fullyConnectedLayer(500);
f2=fullyConnectedLayer(500);
s1=softmaxLayer;
outputLayer=classificationLayer;
I tried to run this same network but I got an error regarding the dimensions of Layer 4:
Layer 4: Input size mismatch. Size of input to this layer is different from the expected
input size.
Inputs to this layer:
from layer 3 (output size 1×7×20)
Could you help me finding the appropiate dimensions for network's architecture? Thanks...
