How to calculate this formula?

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fede
fede 2015-11-5
回答： Star Strider 2015-11-5
I have a vector of weight w(1,n) and a vector of correlation p(n,1). How can calculate this formula?
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fede
fede 2015-11-5
Sorry, I have the matrix of correlation, and not a vector.

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Star Strider
Star Strider 2015-11-5
See if this works:
wij = triu(bsxfun(@times, w, w'));
num = wij*p;
den = sum(wij(:));
pr = sum(num(:))/den);

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