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Implement PMedianPerturber

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This commit is contained in:
Alinson S. Xavier
2025-12-08 13:36:49 -06:00
parent 14e2fe331d
commit 427bd1d806
3 changed files with 104 additions and 99 deletions
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17
tests/problems/test_pmedian.py
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@@ -17,12 +17,8 @@ def test_pmedian() -> None:
p=randint(low=2, high=3),
demands=uniform(loc=0, scale=20),
capacities=uniform(loc=0, scale=100),
distances_jitter=uniform(loc=0.95, scale=0.1),
demands_jitter=uniform(loc=0.95, scale=0.1),
capacities_jitter=uniform(loc=0.95, scale=0.1),
fixed=True,
)
data = gen.generate(2)
data = gen.generate(1)
assert data[0].p == 2
assert data[0].demands.tolist() == [0.41, 19.4, 16.65, 4.25, 3.64]
@@ -35,17 +31,6 @@ def test_pmedian() -> None:
[33.2, 17.06, 70.92, 56.56, 0.0],
]
assert data[1].p == 2
assert data[1].demands.tolist() == [0.42, 19.03, 16.68, 4.27, 3.53]
assert data[1].capacities.tolist() == [19.2, 31.26, 54.79, 44.9, 29.41]
assert data[1].distances.tolist() == [
[0.0, 51.6, 83.31, 33.77, 31.95],
[51.6, 0.0, 70.25, 71.09, 17.05],
[83.31, 70.25, 0.0, 68.81, 67.62],
[33.77, 71.09, 68.81, 0.0, 58.88],
[31.95, 17.05, 67.62, 58.88, 0.0],
]
model = build_pmedian_model_gurobipy(data[0])
assert model.inner.numVars == 30
assert model.inner.numConstrs == 11