def get_differences(self, p0: Perception) -> Condition:
"""
Determines the strongest differences in between the mark
and current perception.
:param: perception
:return: condition that specifies all the differences.
"""
diff = Condition.empty(length=self.cfg.classifier_length)
nr1, nr2 = 0, 0
# Count difference types
for idx, item in enumerate(self):
if len(item) > 0 and p0[idx] not in item:
nr1 += 1
elif len(item) > 1:
nr2 += 1
if nr1 > 0:
possible_idx = [pi for pi, p in enumerate(p0) if
p not in self[pi] and len(self[pi]) > 0]
rand_idx = random.choice(possible_idx)
diff[rand_idx] = p0[rand_idx]
elif nr2 > 0:
for idx, item in enumerate(self):
if len(item) > 1:
diff[idx] = p0[idx]
return diff
def test_should_get_differences_1(self, _p0, cfg):
# given
generic_condition = Condition.empty(length=cfg.classifier_length)
p0 = Perception(_p0)
mark = PMark(cfg)
# when
diff = mark.get_differences(p0)
# then
assert diff == generic_condition
def is_general(self):
cl_length = self.cfg.classifier_length
return self.condition == Condition.empty(cl_length) \
and self.effect == Effect.empty(cl_length)