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Optimization of a script

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Alcide
Alcide il 24 Ago 2023
Risposto: Bruno Luong il 24 Ago 2023
Hi,
I'm working on a script like this:
a=[ 1 1 0 1 1 1 1 0 1]
b=2
c=3.2
v=0
for i=1: 9
f=b*2^(i-1)
if a(i)==0
g=f*c-f
v=v+g
end
end
I would like to maximize the value of v using b and c as variables.
How can i do that?
TY
  2 Commenti
Dyuman Joshi
Dyuman Joshi il 24 Ago 2023
Do you mean - you want to find value of b and c for which v will be maximum?
Torsten
Torsten il 24 Ago 2023
b = c = Inf

Accedi per commentare.

Risposta accettata

Bruno Luong
Bruno Luong il 24 Ago 2023
The v you compute is simply
132*b*(c-1)
You want to optimiza it? Take b=Inf and c=Inf

Più risposte (1)

Kevin Holly
Kevin Holly il 24 Ago 2023
Modificato: Kevin Holly il 24 Ago 2023
You can use fmincon.
a = [1 1 0 1 1 1 1 0 1];
b0 = 2; % Initial guess for b
c0 = 3.2; % Initial guess for c
% Define the objective function to maximize
objective = @(x) -calculateV(a, x(1), x(2));
% Set the lower and upper bounds for the variables
lb = [0, 0]; % Lower bounds for b and c
ub = [Inf, Inf]; % Upper bounds for b and c
% Perform constrained optimization to maximize v
[x, fval] = fmincon(objective, [b0, c0], [], [], [], [], lb, ub);
Problem appears unbounded. fmincon stopped because the objective function value is less than the value of the objective function limit and constraints are satisfied to within the value of the constraint tolerance.
% Retrieve the optimized values
b_optimized = x(1);
c_optimized = x(2);
v_maximized = -fval;
% Display the optimized values and the corresponding v
disp("Optimized Values:")
Optimized Values:
disp("b = " + b_optimized)
b = 10167158107334.54
disp("c = " + c_optimized)
c = 10639554538105.3
disp("Maximized v = " + v_maximized)
Maximized v = 1.4278972379828e+28
% Function to calculate v for given a, b, and c
function v = calculateV(a, b, c)
v = 0;
for i = 1:numel(a)
f = b * 2^(i-1);
if a(i) == 0
g = f * c - f;
v = v + g;
end
end
end

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