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Murali Krishna AG


Last seen: 22 dagen ago |  Active since 2020

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Finding of arg max of a function using Gradient descent
Let F=abs(a+bx)^2 Problem: Find x to get the maximum of F. How to proceed with graident descent to solve this problem in matla...

meer dan 2 jaar ago | 1 answer | 1

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answer

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Gaussian particle filtering recursive problem
Anybody have an idea on Gaussian particle filtering. In the attached file, how to generate density function in Time update. Plea...

meer dan 2 jaar ago | 0 answers | 0

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answers

Question


Convolution of two matrices
Let A,B,C,D, are vectors of size 3*1. S=[A*B,C*D]. Here * is linear convolution. How to rearrange A,C together and B,D together...

bijna 3 jaar ago | 1 answer | 0

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answer

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Mean squared error and NMSE
Let he is estimated vector and h is original vector which is unknown. The Mean squared error (MSE) is defined as norm(he-h)^2. N...

ongeveer 3 jaar ago | 1 answer | 0

1

answer

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Integration of exp and erf
f= where erf is error function How to find closed form result? Pls help

ongeveer 3 jaar ago | 1 answer | 0

1

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integration of erf function
f= where How to find the f?

ongeveer 3 jaar ago | 1 answer | 0

1

answer

Question


how to convert analog signal to bit stream
I generate a analog signal cos(2pi*f*t), fs is sampling frequency and I denotes quantization levels. How to convert the analog s...

meer dan 3 jaar ago | 1 answer | 0

1

answer

Question


Find a random position in a vector where the value is zero
I have a vector with mix of complex numbers and zeros. I have to find a random position in the vector where the value is zero. ...

meer dan 3 jaar ago | 2 answers | 0

2

answers

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Estimation of a unknown matrix from the other known matrices
Let there is a matrix form of A=B*C where size of A is 6*1, B is 6*11 and C=11*1. I know matrices A and C, how to find out the...

meer dan 3 jaar ago | 1 answer | 0

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Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 5.872930e-17.
Let A=80*80 matrix I want to generate inverse of the above matrix and I am getting the warning as "Matrix is close to singular ...

bijna 4 jaar ago | 1 answer | 0

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differentiation in matlab of two functions
Let theta=atan(p/q)+pi a(theta)=exp(2*pi*j*A*[cos(theta);sin(theta)]) where A ,is row vector and p,q,A are kno...

bijna 4 jaar ago | 2 answers | 0

2

answers

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arg min for Optimization problem
u=argmin{||X-A*w-B*v||^2} Inputs : A,B,X,w,v outputs:u which contain optimized vector of w,v how to write code for this.Pleas...

bijna 4 jaar ago | 2 answers | 0

2

answers

Question


Matrix Operation and decomposition
Let A=80*80 matrix ,How to find matrices A^(-1/2) and A^(1/2)

ongeveer 4 jaar ago | 1 answer | 0

1

answer

Question


how to find argmin to this vector
c=argmin f(a,b).where both a,b are M*1 and N*1 column matrices respectively. How to get a,b for minimum value of f(a,b) from ...

ongeveer 4 jaar ago | 1 answer | 0

1

answer