def update(self, *args, **kwargs):
evaluations = kwargs['EVALUATIONS']
solutions = kwargs['SOLUTIONS']
if solutions:
if self.figure is None:
self.figure = StreamingPlot(reference_point=self.reference_point,
reference_front=self.reference_front)
self.figure.plot(solutions)
if (evaluations % self.display_frequency) == 0:
# check if reference point has changed
reference_point = kwargs.get('REFERENCE_POINT', None)
if reference_point:
self.reference_point = reference_point
self.figure.update(solutions, reference_point)
else:
self.figure.update(solutions)
self.figure.ax.set_title('Eval: {}'.format(evaluations), fontsize=13)
class VisualizerObserver(Observer):
def __init__(self,
reference_front: List[S] = None,
reference_point: list = None,
display_frequency: int = 1) -> None:
self.figure = None
self.display_frequency = display_frequency
self.reference_point = reference_point
self.reference_front = reference_front
def update(self, *args, **kwargs):
evaluations = kwargs["EVALUATIONS"]
solutions = kwargs["SOLUTIONS"]
if solutions:
if self.figure is None:
self.figure = StreamingPlot(
reference_point=self.reference_point,
reference_front=self.reference_front)
self.figure.plot(solutions)
if (evaluations % self.display_frequency) == 0:
# check if reference point has changed
reference_point = kwargs.get("REFERENCE_POINT", None)
if reference_point:
self.reference_point = reference_point
self.figure.update(solutions, reference_point)
else:
self.figure.update(solutions)
self.figure.ax.set_title("Eval: {}".format(evaluations),
fontsize=13)
def update(self, *args, **kwargs):
evaluations = kwargs['EVALUATIONS']
solutions = kwargs['SOLUTIONS']
if solutions:
if self.figure is None:
axis_labels = None
problem = kwargs['PROBLEM']
if problem and problem.obj_labels:
axis_labels = problem.obj_labels
self.figure = StreamingPlot(
reference_point=self.reference_point,
reference_front=self.reference_front,
axis_labels=axis_labels)
self.figure.plot(solutions)
if (evaluations % self.display_frequency) == 0:
# check if reference point has changed
reference_point = kwargs.get('REFERENCE_POINT', None)
# negative fitness values are converted to positive
population = copy.copy(solutions)
if self.non_dominated:
population = non_dominated_population(population)
for i in range(len(population)):
obj = [abs(x) for x in population[i].objectives]
population[i].objectives = obj
if reference_point:
self.reference_point = reference_point
self.figure.update(population, reference_point)
else:
self.figure.update(population)
self.figure.ax.set_title('Eval: {}'.format(evaluations),
fontsize=13)