Adding outlier to a matrix
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Hi , I have a matrix of intensities (n*p). I want to add an outlier to it. Do you have any idea about how to simulate an outlier? I was thinking to take the mean of matrix and then multiply it to some very high value?
Do you have any idea ?
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Star Strider
on 22 May 2014
I suggest:
M = rand(4,5); % Create data
Msts = [mean(M(:)) std(M(:))];
Outlier = Msts(1)+5*Msts(2);
Define the outlier by a multiple of the standard deviation from the mean. An value of 5*std is quite far out.
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Roger Wohlwend
on 22 May 2014
Actually you answered your question yourself. Instead of the mean I would use the maximum value of the matrix. Multiply that number by a certain value. That's all. It is quite easy.
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