utils
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27
src/utils.py
27
src/utils.py
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@ -113,3 +113,30 @@ class multi_fragment:
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sol_list.append(n1)
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return sol_list
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@staticmethod
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def mf(instance):
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mat = np.copy(instance.dist_matrix)
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mat = np.triu(mat)
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mat[mat == 0] = 100000
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solution = {str(i): [] for i in range(instance.nPoints)}
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start_list = [i for i in range(instance.nPoints)]
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inside = 0
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for el in np.argsort(mat.flatten()):
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node1, node2 = el // instance.nPoints, el % instance.nPoints
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possible_edge = [node1, node2]
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if multi_fragment.check_if_available(node1, node2, solution):
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if multi_fragment.check_if_not_close(possible_edge, solution):
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# print("entrato", inside)
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solution[str(node1)].append(node2)
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solution[str(node2)].append(node1)
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if len(solution[str(node1)]) == 2:
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start_list.remove(node1)
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if len(solution[str(node2)]) == 2:
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start_list.remove(node2)
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inside += 1
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# print(node1, node2, inside)
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if inside == instance.nPoints - 1:
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# print(f"ricostruire la solutione da {start_list}",
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# f"vicini di questi due nodi {[solution[str(i)] for i in start_list]}")
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solution = multi_fragment.create_solution(start_list, solution)
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return solution
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