Questions tagged [minizinc]
MiniZinc is a high level solver-independent constraint modeling language.
12
questions
2
votes
1
answer
173
views
optimizing choosing subset of best items
I have a simple problem that doesn't perform well at the moment. I have a set of ~1000 candidates, from which I want to choose ~10 optimal candidates. They all have a score, and the optimal subset is ...
- 123
1
vote
0
answers
55
views
Tents and trees constraints
I am trying to express the constraints for the 'Tents and trees' puzzle in minizinc but I am a bit stuck...
I can express that each tent must be attached to at least one tree
That a tree must be ...
- 11
1
vote
1
answer
85
views
Multiplicity-Constraint in Constraint Programming Solvers
I need to solve a CSP with a constraint imposing upper bounds on the multiplicity of variables in a list.
More precisely, I need a constraint of the form
...
- 113
2
votes
1
answer
62
views
Which method MiniZinc uses to decrease terms of degree > 2 to quadratic terms?
I would like to know which methods/algorithms MiniZinc uses to decrease terms of degree > 2 to quadratic terms. For example in the following code
...
- 179
2
votes
1
answer
180
views
Why MiniZinc do not do convert to linear constraint a quadratic constraint?
I would like to know which are the advantage to do not convert quadratic expressions into linear expression in MiniZinc. For example let be the following simple MiniZinc code
...
- 179
2
votes
1
answer
71
views
A variable being a set...?
I am currently doing a coursera course on optimization. They are using minizinc and they modeled a
problem where the decision is a choice of things --> a set. We all know this is a knapsack and it ...
- 533
2
votes
1
answer
195
views
3
votes
1
answer
383
views
VRPTW implementation
Does anybody have an example of the vehicle routing problem with time windows (VRPTW), implemented on Python with CPLEX library, AMPL, or MiniZinc? So far I've looked into ...
- 175
9
votes
2
answers
624
views
Which MiniZinc-compatible solvers are best suited for floating decision variables and non-linear constraints?
We are working on a production scheduling problem that has both discrete ("how much to produce from good x and where") and continuous elements ("keep the workload of a production site below 0.7"),
...
- 193
6
votes
0
answers
92
views
Data Formulation for Mixed-Integer-Programming Models
Until now, I have used the Gurobi, CPLEX and OR-Tools (GCO) interface to formulate mixed-integer-programming models.
Recently, I have discovered MiniZinc and want to utilize it to formulate big ...
- 1,193
10
votes
1
answer
298
views
RCPSP minizinc model
I'm working on a resource‐constrained project scheduling problem (RCPSP) in Minizinc but I have problems with the running times when the dataset is big (like 400 jobs, 2 resources, 1,000 precedences, ...
- 131
8
votes
1
answer
592
views
Minizinc: How to use a predicate in an assert statement?
Trying to use minizinc builtins to do some basic validation of data inputs but I get a type error ...
- 183