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I want to use genetic algorithm in matlab. I have a matrix as a population.
how can I use a specific matrix as a population to input in ga function of Matlab?
use gaoptimset setting the 'InitialPopulation' field and pass the result to your ga as the options argument
example:
pop = {rand(n,m)} %// The {} might not be necessary.
options = gaoptimset('InitialPopulation',pop);
x = ga(....., options)
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I wan to give x,y,z coordinates to a point, for example to P point.
The P point coordinates are: P=(0,1,1)
How can I give the values in Matlab?
I tried P=(0,1,1) and Px=0 Py=0 Pz=0 ,but I need it to an equation.
one variable can store n-dimensional coordinates
P=[0 1 1];
you can also do this:
px=0;
py=1;
pz=1;
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Is it possible to convert a .PNG image to an array of numerical values (e.g. red, green, blue values) that I can work with using MATLAB? If so, how can I do this?
not sure what you mean.
if you import imread('someImage.png') you get a n x m x 3matrix
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How to calculate the energy of the function tri(2t+5/6) using matlab?[where tri is triangular pulse function]
Define trisqr square function and integrate over it:
trisqr=#(x) tri(x).*tri(x);
xmin=-2;
xmax=2;
Energy=integral(trisqr,xmin,xmax)
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The addition of an extra term, called a proportional factor reduces the convergence of the back propagation algorithm.
So how to avoid local minima in Back propagation algorithm.
In local minimum a gradient of an error function is a zero vector - so backprop - which is using a gradient - cannot move your parameters any further and finishes training.
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Can anyone help me to make aperture function in Matlab? I tried by making a matrix, but it wasn't helpful.
If you have the image processing toolbox you can use fspecial:
A = fspecial('disk',10);
This will create an aperture of radius 10 pixels.
Next, you can embed this matrix in a bigger zero matrix, using padarray, for example:
A = padarray(A,[20 20]);