def create_solution(self) -> MulticastMultiObjectiveSolution:
""" Creates a valid solution to the problem.
:return: MulticastMultiObjectiveSolution. """
return MulticastMultiObjectiveSolution(number_of_variables=self.number_of_variables,
number_of_objectives=self.number_of_objectives,
graph=self.G,
root_node=self.root_node,
destination_nodes=self.destination_nodes,
number_of_constraints=self.number_of_constraints
)
def execute(
self, parents: List[MulticastMultiObjectiveSolution]
) -> List[MulticastMultiObjectiveSolution]:
child_tree = self.crossover(parents[0], parents[1])
child = MulticastMultiObjectiveSolution(
graph=child_tree,
number_of_variables=parents[0].number_of_variables,
number_of_objectives=parents[0].number_of_objectives,
root_node=parents[0].root_node,
destination_nodes=parents[0].destination_nodes,
number_of_constraints=parents[0].number_of_constraints,
max_delay=parents[0].max_delay,
alpha=parents[0].alpha,
phi=parents[0].phi,
build_tree=False)
return [child]
def evaluate(self, solution: MulticastMultiObjectiveSolution) -> MulticastMultiObjectiveSolution:
solution.objectives[0] = self._f_cost(solution)
solution.objectives[1] = self._f_delay_1(solution)
solution.objectives[2] = self._f_delay_3(solution)
return solution