Questions tagged [matlab]
For questions about solving Operations Research problems using Matlab programming language.
31
questions
2
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1
answer
38
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How to generate random bounded polytope by MATLAB defined by Ax=b, x≥0
How can one create a random bounded polytope in MATLAB, specified by the conditions
$\lbracex:~ Ax = b,~ x \geq 0\rbrace$
0
votes
0
answers
21
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the Shannon entropy of a radar matrix
Now,I have a 2D radar spectrum data,which is obtained from 2D FFT along fast time and angle dimension at one range and azimuth coordinate points and its neighbor several different range and azimuth ...
- 9
0
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0
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71
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is it possible to improve the solution process of an MILP?
I am trying to optimize a charging station for EVs in matlab with intlinprog, which is connected to a PV-Modul, to an system storage systeme and to the network grid. I am using different Storage ...
- 11
0
votes
1
answer
100
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Mixed Integer Programming - How to model a term in objective function with a constant multiplied by (1-Decision Variable)
I am solving an optimization problem, where I want to minimize the objective function
$$Z = \sum_q \left(D_q \text{fare}_q - \sum_{p \ne q} \Delta D^p_q \text{fare}_q \right) (1-Z_q)$$
Each $q$ is an ...
1
vote
1
answer
81
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Solving stochastic dynamic problem by space state MATLAB program
I have a maximization problem as shown in the picture below. The output has a common shock z that follows a two-state Markov chain with a transition matrix Π. Does anyone know how I would go about ...
- 11
6
votes
8
answers
3k
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Ideal programming language for an operations researcher
No single programming language will meet every need. However, there should be a language that most operations research scientists prefer to master.
I have coded different algorithms in Matlab and ...
- 615
5
votes
2
answers
584
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Transform nonlinear cost function to get LP or MILP
I'm trying to schedule power of multiple prosumers in a microgrid.
The problem includes a cost function with min and max ...
- 153
2
votes
0
answers
64
views
Where is the relative gap from cplexbilp?
I am invoking cplexbilp (CPLEX 12.9) from Matlab R2022a. I request all 4 return arguments:
...
- 223
2
votes
0
answers
77
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Determining the number of nodes within a cycle for an MILP problem
I have a MILP problem that requires knowing the number of nodes within a cycle (there will be multiple depending on inputs). I believe this will involve tracing nodes/values within cycles using the ...
- 21
2
votes
0
answers
135
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Defining a highly non-linear function of integer variables
I have a complicated non-linear objective function of positive integer variables subject to linear constraints:
$\mathop {Min}\limits_{\underline x} f(\underline x)$
s.t.
$A\underline x\leq \underline ...
2
votes
1
answer
57
views
Is it possible to change the underlying field from Euclidean to $\mathbb{F}_p$?
I have an ILP $Ax=b$ that I know has feasible solution(s), and I would like to find a/all feasible solution(s). The issue is that $A,x,b$ are defined over $\mathbb{F}_p$. More specifically, I need the ...
- 431
0
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2
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410
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How to normalize the objective functions of multi-objective optimization for a MPC?
I have a MPC with two objective functions, one that minimises fuel consumption and one that minimises the travel time of a vessel. I want to combine these two objectives into one weighted objective, ...
0
votes
1
answer
101
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lsqcurvefit error in simulation of demands in MATLAB
I want to simulate the demand of a factory. This is not a real problem, the demand follows this relation $D= AB^2C^3$ where $A$, $B$ and $C$ have normal distributions: $$A\sim N(10,2.5),\quad B\sim(6,...
- 55
6
votes
1
answer
575
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What underlies intlinprog in MATLAB?
When a paper says they used the intlinprog in MATLAB to solve an integer program, what system actually does the solving? I have seen documentation about Gurobi and MATLAB: does Gurobi always provide ...
- 2,352
1
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0
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78
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Create randomly an undirected connected graph using Matlab [closed]
I want to create randomly an undirected connected graph $G=(V,E)$ with $n$ nodes and $m$ edges using Matlab. How can I do this?
- 409