How to extract features to train and test dataset for emotion recognition signal using GSR?
6 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hello, I have ASCERTAIN dataset which is consists of GSR signal. But, there is a problem with my coding when I want to proceed train and test daatset from extract features using classifier. Here is my coding.
Data_GSR
% Filter the signals with a highpass filter
Data_GSRFiltered = highpass(Data_GSR,0.7,64);
meanFE = signalTimeFeatureExtractor("Mean",true,"SampleRate",64);
timeFE = signalTimeFeatureExtractor("RMS",true,...
"ShapeFactor",true,...
"PeakValue",true,...
"CrestFactor",true,...
"ClearanceFactor",true,...
"ImpulseFactor",true,...
"SampleRate",64);
freqFE = signalFrequencyFeatureExtractor("PeakAmplitude",true,...
"PeakLocation",true,...
"MeanFrequency",true,...
"BandPower",true,...
"PowerBandwidth",true,...
"SampleRate",64);
fftLength = 256;
window = rectwin(size(Data_GSR,1));
setExtractorParameters(freqFE,"WelchPSD","FFTLength",fftLength,"Window",window);
mindist_xunits = 0.25;
minpkdist = floor(mindist_xunits/(64/fftLength));
setExtractorParameters(freqFE,"PeakAmplitude","MaxNumExtrema",6,"MinSeparation",minpkdist);
setExtractorParameters(freqFE,"PeakLocation","MaxNumExtrema",6,"MinSeparation",minpkdist);
meanFeatureDs = arrayDatastore(Data_GSR,"IterationDimension",2);
meanFeatureDs = transform(meanFeatureDs,@(x)meanFE.extract(x{:}));
timeFeatureDs = arrayDatastore(Data_GSRFiltered,"IterationDimension",2);
timeFeatureDs = transform(timeFeatureDs,@(x)timeFE.extract(x{:}));
freqFeatureDs = arrayDatastore(Data_GSRFiltered,"IterationDimension",2);
freqFeatureDs = transform(freqFeatureDs,@(x)freqFE.extract(x{:}));
meanFeatures = readall(meanFeatureDs,"UseParallel",true);
timeFeatures = readall(timeFeatureDs,"UseParallel",true);
freqFeatures = readall(freqFeatureDs,"UseParallel",true);
features = [meanFeatures timeFeatures freqFeatures];
featureTable = array2table(features);
head(featureTable)
1 Kommentar
Shivansh
am 24 Jan. 2024
Hi Ramos!
Can you share the error message you are getting while feature extraction using GSR?
Antworten (0)
Siehe auch
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!