def test_should_find_subsumer_among_nonsubsumers(self, acs2_cfg):
# given
subsumer = acs2.Classifier(condition='###0####',
action=3,
effect='##1#####',
quality=0.93,
reward=1.35,
experience=23,
cfg=acs2_cfg)
nonsubsumer = acs2.Classifier(action=3, cfg=acs2_cfg)
cl = acs2.Classifier(condition='1##0####',
action=3,
effect='##1#####',
quality=0.5,
reward=0.35,
experience=1,
cfg=acs2_cfg)
population = acs2.ClassifiersList(
*[nonsubsumer, subsumer, nonsubsumer])
# when
subsumers = find_subsumers(cl, population, acs2_cfg.theta_exp)
# then
assert len(subsumers) == 1
assert subsumers[0] == subsumer
def test_should_find_most_general_subsumer(self, acs2_cfg):
# given
subsumer1 = acs2.Classifier(condition='1##0####',
action=3,
effect='##1#####',
quality=0.93,
reward=1.35,
experience=23,
cfg=acs2_cfg)
subsumer2 = acs2.Classifier(condition='#1#0####',
action=3,
effect='##1#####',
quality=0.93,
reward=1.35,
experience=23,
cfg=acs2_cfg)
most_general = acs2.Classifier(condition='###0####',
action=3,
effect='##1#####',
quality=0.93,
reward=1.35,
experience=23,
cfg=acs2_cfg)
nonsubsumer = acs2.Classifier(cfg=acs2_cfg)
cl = acs2.Classifier(condition='11#0####',
action=3,
effect='##1#####',
quality=0.5,
reward=0.35,
experience=1,
cfg=acs2_cfg)
population = acs2.ClassifiersList(*[
nonsubsumer, subsumer1, nonsubsumer, most_general, subsumer2,
nonsubsumer
])
# when
subsumers = find_subsumers(cl, population, acs2_cfg.theta_exp)
# then
assert subsumers[0] == most_general
def _find_old_classifier(population, cl, use_subsumption: bool,
theta_exp: int):
old_cl = None
if use_subsumption:
subsumers = find_subsumers(cl, population, theta_exp)
# Try to find most general subsumer
try:
old_cl = subsumers[0]
except IndexError:
pass
# If there is no subsumer - look for similar classifiers
if old_cl is None:
old_cl = _find_similar(cl, population)
return old_cl