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help me to type this eq in MATLAB script

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nayan gupta
nayan gupta il 15 Ott 2022
Commentato: Image Analyst il 16 Ott 2022
help me to type this eq(file attached) in MATLAB script
  4 Commenti
nayan gupta
nayan gupta il 15 Ott 2022
N is the Power of alpha
Image Analyst
Image Analyst il 16 Ott 2022
Understood. But what did you think of the answers below?

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Risposte (1)

Image Analyst
Image Analyst il 15 Ott 2022
It's not clear what your variable names are, how many dimensions they have, and what variable (i or r) is in each dimension, probably because you didn't read the community Guidelines before posting. But here is a stab at it:
denominator = sum(xw(:, r) .* alpha(:, r) .^ N);
xD(r) = xw(:, r) ./ denominator
If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this:
  1 Commento
Walter Roberson
Walter Roberson il 15 Ott 2022
If is a row vector of length C and α is a 2D array that is C by something, then you could save on the explicit sum by using
xd = xw ./ (xw * alpha.^N)
where * is the matrix multiplication operation.
but for the sizes to work out properly, alpha would have to turn out to be square

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