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Eric


Last seen: 5 months 前 |  自 2022 起处于活动状态

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统计学

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How to restrict tensorprod (with contraction) to only give certain results?
I have vector of matrices A and a vector of vectors M. I want to do matrix multiplication of matrix in A and corresponding vecto...

5 months 前 | 1 个回答 | 0

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For matrix A you cannot do: A.^2(:)
I have a matrix A=[1 2;3 4]. I want to sum the squares of the elements in the matrix. So I tried sum(A.^2(:)) I cannot do ...

6 months 前 | 2 个回答 | 0

2

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svd(X,"econ") does not work as expected if X is square nxn matrix with rank<n
If X=[1 1;1 1] then with [U,S,V]=svd(X,"econ") I had expected that U=V=[1;1]/sqrt(2) and S=[2]. But "econ" does not work, S=[2 ...

2 years 前 | 3 个回答 | 0

3

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