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# Hancheng Zhu

Last seen: 2 months ago Active since 2021

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The product of a vector and a matrix
I have a vector A = and a matrix X = , where is a M-dimensional row vector. Does matlab have an operator that directly give m...

3 months ago | 1 answer | 0

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Question

Matlab solver for unconstrained convex optimization
I have a large scale unconstrained convex optimization problem as follows min , where and are N-dimensional vectors, is a sc...

3 months ago | 1 answer | 0

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Optimization problem using fminunc
I have an optimization problem where x is a N-dimensional vector need to be optimized and a1,...,a5 are parameters. I have w...

3 months ago | 1 answer | 0

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How to efficiently calculate a weighted sum of 3 dimensional matrix through a vector in matlab
A is a 3 dimensional matrix (M*N*K), b is a vector with length K. I need to calculate , which is a 2 dimensional matrix (M*N)....

4 months ago | 2 answers | 0

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My algorithm contains solving a unconstrained quadratic problem. f(x) = 1/2*x'*A*x+b'*x, where A is a positive semidefinite matr...

4 months ago | 1 answer | 0

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Question

CVX optimization of semidefinite relaxation (SDR) with complex matrix
I need to optimize the following semidefinite relaxation problem Here is my code with CVX tool where N is the size of matr...

1 year ago | 1 answer | 0