help me to type this eq in MATLAB script

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nayan gupta
nayan gupta 2022-10-15
评论： Image Analyst 2022-10-16
help me to type this eq(file attached) in MATLAB script
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Image Analyst
Image Analyst 2022-10-16
Understood. But what did you think of the answers below?

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回答（1 个）

Image Analyst
Image Analyst 2022-10-15
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:
TUTORIAL: How to ask a question (on Answers) and get a fast answer
  1 个评论
Walter Roberson
Walter Roberson 2022-10-15
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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