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christina


Last seen: 4 years ago |  Active since 2018

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Numerical Implementaion via ADMM

4 years ago | 0 answers | 0

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How to fix the error while running ksdensity function?
I get the following error while calling the ksdensity routine. Can somebody tell me how to fix this?

5 years ago | 0 answers | 0

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answers

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Obtain a periodic convolution matrix for 2D signal
Following matlab code generates a periodic convolution matrix for 1D case. Can somebody tell me the way to generate the matrix f...

5 years ago | 0 answers | 0

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answers

Question


Optimization Problem using fminunc
Does anyone know how to solve this problem? Local minimum possible. fminunc stopped because it cannot decrease the objective...

5 years ago | 1 answer | 0

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answer

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Spectral norm minimization using semi definite programming
Can somebody please tell me how to solve the following problem using semi definite programming in matlab?

5 years ago | 0 answers | 0

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answers

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Problem regarding using fminunc
I am trying to minimize the spectral norm and run into this problem. How do I solve it?

5 years ago | 1 answer | 0

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answer

Question


Generate N random uniformly distributed points in the d-ball
How to generate N random uniformly distributed points in the d--ball

5 years ago | 2 answers | 0

2

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Generate random sample of points distributed on the n-dimensional sphere of radius R and centred at the origin
How to generate random sample of points distributed on the n-dimensional sphere of radius R and centred at the origin?

5 years ago | 1 answer | 0

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answer

Question


Solve for diagonal matrix D by minimizing the operator norm in Matlab
Say that the size of matrix A is 576x576 and size of F is1296x576. Which matlab function can I use to solve this problem?

5 years ago | 1 answer | 0

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How to generate a vector of uniformly distributed numbers around 1?
How to generate a vector of uniformly distributed numbers around 1 using rand function?

5 years ago | 1 answer | 0

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Function handle to randomly select the rows of ifft matrix for compressed sensing
Can somebody tell me how can I write a function handle such that it selects the rows of the ifft matrix randomly. I need this fu...

5 years ago | 1 answer | 0

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answer

Question


Error while passing function to matlab's svds function
I am getting following error when I run my code. Can somebody please tell me what am I doing wrong here and how to fix it? I hav...

5 years ago | 1 answer | 0

1

answer

Question


Dealing with large matrices in compressive sensing
Following code demonstrates compressive sensing. The length of the input signal x used is N =1024 samples. The size of the DFT m...

5 years ago | 1 answer | 0

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answer

Question


Creating a sparse vector
How do I create a random s-sparse vector of some fixed length?

5 years ago | 0 answers | 0

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Help with Coding problem
I am trying to code the following in matlab. << <</matlabcentral/answers/uploaded_files/124125/Capture22.PNG>> Followin...

6 years ago | 1 answer | 0

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answer

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time-frequency shifted gaussian function
I am trying to implement a function that generates a cyclic time and frequency shifted version of a gaussian function. <</mat...

6 years ago | 0 answers | 0

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Question


Optimization problem using Quasi Newton method
Given x_t and c_mn, the objective function is defined as: <</matlabcentral/answers/uploaded_files/122647/Screen%20Shot%202018...

6 years ago | 0 answers | 0

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Quasi newton method for optimization
<</matlabcentral/answers/uploaded_files/122406/obj.PNG>> I am trying to solve the above objective function for theta using ...

6 years ago | 2 answers | 0

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answers

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How do I write the code for solving the optimization problem in Matlab?
Can somebody help me solve for θ? <</matlabcentral/answers/uploaded_files/122265/mat.PNG>>

6 years ago | 1 answer | 0

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