Pairwaise Mutual Information Calculation
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I am trying to estimate the Mutual Information for pairwise combinations for the whole matrix (which is an EEG data). I use the functions defined here link. And I use following code to estimate this pairwise.
Data=csvread('data.csv'); % loads the EEG data.
% MI for pair of recordings in EEG
n=size(Data,1);% Number of Chanenls in EEG data
MICs=zeros(n,n);
for i=1:n
for j=1:n
one=Data(i,:);
two=Data(j,:);
miin=h(one')+h(two')-h([one',two']);
MIC(i,j)=miin;
end
end
- I see different ways to estimate the MI's, however I had written my code above to verify.
- When I tried to estimate the Mean(average) value of MI for all the pairs, Should I remove the diagonals values (which corresponds to the MI for its own pair) and the duplicates values (as the matrix is an outcome of the pairwise estimation).?
- Or Should I just estimate the mean for the whole matrix which is an outcome of the above code?
4 commentaires
Image Analyst
le 24 Déc 2018
Make it easy for people to help you, not hard, by attaching whatever filename "data" is with the paperclip icon.
By the way, it's not a good idea to have "data" be both the filename string used in load, and the numerical data variable. For example since "data" is the filename,
n=size(data,1);
will give the length of your filename string (number of characters in it), not the number of rows in some numerical array.
Marimuthu Ananthavelu
le 24 Déc 2018
madhan ravi
le 24 Déc 2018
you didn't attach your data
Marimuthu Ananthavelu
le 24 Déc 2018
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