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Spyros Polychronopoulos


Active since 2017

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Obtaining a matrix of all the values the optimizer tried
Hi there, I have this optimizer minimizing f. The optimizer is trying various values for x variable. Would you maybe have an ide...

6 years ago | 1 answer | 1

1

answer

Answered
Multi variable Simulated Annealing with different bounds
Would you maybe know a way to obtain a matrix with all the values x (for all the iterations) the optimizer tried? Thanks in adv...

6 years ago | 0

Question


Multi variable Simulated Annealing with different bounds
Hi there, I have this function that has two variables x and y fun = @(x,y) x+y-5; I would like to find the global minim...

6 years ago | 2 answers | 0

2

answers

Question


Plotting discretized field in 2D
<</matlabcentral/answers/uploaded_files/121083/Capture.PNG>> I have x,y Cartesian Coordinates and a value next to them that I...

6 years ago | 1 answer | 0

1

answer

Question


Summation with syms not returning a single value
I would expect the code below to return (O) just one value for zd=(A(:,3)) as I am summing the matrices. A = ones(10,3); s...

6 years ago | 1 answer | 0

1

answer

Question


GPU solving Optimizer SA
I would like to run the optimizer below on GPU could anyone help? a=@(z) rand-z; %how can i run this optimizer on GPU? z0...

7 years ago | 0 answers | 0

0

answers

Question


Gradient of a cell array with optimizer
Hi everyone, I have a function with various variables z, as can be seen in the example below. I would like to take the gradien...

7 years ago | 0 answers | 0

0

answers

Question


Gradient using cells and functions
I am taking the gradient of a structure array in x,y as shown below part_x1 and part_y1: for k1=1:10 q1(k1).p=rand(10,10);...

7 years ago | 0 answers | 0

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answers

Question


cellfun with gradient [x,y]
I have a structure array q(1:50,1).p(1:50,1:50). And I was taking the gradient: for k1=1:100 [part_x(k1).p,part_y(k1).p]= ...

7 years ago | 0 answers | 0

0

answers

Question


3D Plot from point to surfaces
I have these points Ax=2:4:14; Ay=2:4:14; Z=rand(4,4)+20; I would like to plot the surface in 3D but not as a unite su...

7 years ago | 1 answer | 0

1

answer

Question


Calculations with functions in cells
Hello I have the matrix d and I would like to calculate the minimum value in the first cell d{1}. But I have a mistake somewhere...

7 years ago | 0 answers | 0

0

answers

Question


Summation of functions in a loop
Hi there, I would like to create functions and then sum them up in a loop. Then use an optimizer to find the minimum of the sum...

7 years ago | 2 answers | 0

2

answers

Question


Relationship between variables from a number of equations
I have 500 variables and 100 equations. Could I get a result with the relationships between the variables? So the equations I...

7 years ago | 3 answers | 0

3

answers