def read(jason_string):
jason = json.loads(jason_string)
if 'name' in jason:
configuration_space = ConfigurationSpace(name=jason['name'])
else:
configuration_space = ConfigurationSpace()
for hyperparameter in jason['hyperparameters']:
configuration_space.add_hyperparameter(
_construct_hyperparameter(hyperparameter, ))
for condition in jason['conditions']:
configuration_space.add_condition(
_construct_condition(
condition,
configuration_space,
))
for forbidden in jason['forbiddens']:
configuration_space.add_forbidden_clause(
_construct_forbidden(
forbidden,
configuration_space,
))
return configuration_space
def test_build_new_forbidden(self):
expected = "a categorical {a, b, c} [a]\nb categorical {a, b, c} [c]\n\n" \
"{a=a, b=a}\n{a=a, b=b}\n{a=b, b=a}\n{a=b, b=b}\n"
cs = ConfigurationSpace()
a = CategoricalHyperparameter("a", ["a", "b", "c"], "a")
b = CategoricalHyperparameter("b", ["a", "b", "c"], "c")
cs.add_hyperparameter(a)
cs.add_hyperparameter(b)
fb = ForbiddenAndConjunction(ForbiddenInClause(a, ["a", "b"]),
ForbiddenInClause(b, ["a", "b"]))
cs.add_forbidden_clause(fb)
value = pcs_new.write(cs)
self.assertEqual(expected, value)
def read(pcs_string, debug=False):
configuration_space = ConfigurationSpace()
conditions = []
forbidden = []
# some statistics
ct = 0
cont_ct = 0
cat_ct = 0
line_ct = 0
for line in pcs_string:
line_ct += 1
if "#" in line:
# It contains a comment
pos = line.find("#")
line = line[:pos]
# Remove quotes and whitespaces at beginning and end
ori_line = line
line = line.replace('"', "").replace("'", "")
line = line.strip()
if "|" in line:
# It's a condition
try:
c = pp_condition.parseString(line)
conditions.append(c)
except pyparsing.ParseException:
raise NotImplementedError("Could not parse condition: %s" %
line)
continue
if "}" not in line and "]" not in line:
continue
if line.startswith("{") and line.endswith("}"):
forbidden.append(line)
continue
if len(line.strip()) == 0:
continue
ct += 1
param = None
create = {
"int": UniformIntegerHyperparameter,
"float": UniformFloatHyperparameter,
"categorical": CategoricalHyperparameter
}
try:
param_list = pp_cont_param.parseString(line)
il = param_list[9:]
if len(il) > 0:
il = il[0]
param_list = param_list[:9]
name = param_list[0]
lower = float(param_list[2])
upper = float(param_list[4])
paramtype = "int" if "i" in il else "float"
log = True if "l" in il else False
default_value = float(param_list[7])
param = create[paramtype](name=name,
lower=lower,
upper=upper,
q=None,
log=log,
default_value=default_value)
cont_ct += 1
except pyparsing.ParseException:
pass
try:
param_list = pp_cat_param.parseString(line)
name = param_list[0]
#choices = [c for c in param_list[2:-4:2]]
ori_line_segs = ori_line.split('{')
choices_str = '[' + ori_line_segs[1].split('}')[0] + ']'
choices = json.loads(choices_str)
#default_value = param_list[-2]
ori_line_segs = ori_line.split('[')
default_str = ori_line_segs[-1].split(']')[0]
default_value = json.loads(default_str)
param = create["categorical"](name=name,
choices=choices,
default_value=default_value)
cat_ct += 1
except pyparsing.ParseException:
pass
if param is None:
raise NotImplementedError("Could not parse: %s" % line)
configuration_space.add_hyperparameter(param)
for clause in forbidden:
# TODO test this properly!
# TODO Add a try/catch here!
# noinspection PyUnusedLocal
param_list = pp_forbidden_clause.parseString(clause)
tmp_list = []
clause_list = []
for value in param_list[1:]:
if len(tmp_list) < 3:
tmp_list.append(value)
else:
# So far, only equals is supported by SMAC
if tmp_list[1] == '=':
# TODO maybe add a check if the hyperparameter is
# actually in the configuration space
clause_list.append(
ForbiddenEqualsClause(
configuration_space.get_hyperparameter(
tmp_list[0]), tmp_list[2]))
else:
raise NotImplementedError()
tmp_list = []
configuration_space.add_forbidden_clause(
ForbiddenAndConjunction(*clause_list))
#Now handle conditions
# If there are two conditions for one child, these two conditions are an
# AND-conjunction of conditions, thus we have to connect them
conditions_per_child = OrderedDict()
for condition in conditions:
child_name = condition[0]
if child_name not in conditions_per_child:
conditions_per_child[child_name] = list()
conditions_per_child[child_name].append(condition)
for child_name in conditions_per_child:
condition_objects = []
for condition in conditions_per_child[child_name]:
child = configuration_space.get_hyperparameter(child_name)
parent_name = condition[2]
parent = configuration_space.get_hyperparameter(parent_name)
restrictions = condition[5:-1:2]
# TODO: cast the type of the restriction!
if len(restrictions) == 1:
condition = EqualsCondition(child, parent, restrictions[0])
else:
condition = InCondition(child, parent, values=restrictions)
condition_objects.append(condition)
# Now we have all condition objects for this child, so we can build a
# giant AND-conjunction of them (if number of conditions >= 2)!
if len(condition_objects) > 1:
and_conjunction = AndConjunction(*condition_objects)
configuration_space.add_condition(and_conjunction)
else:
configuration_space.add_condition(condition_objects[0])
return configuration_space
def read(pcs_string, debug=False):
configuration_space = ConfigurationSpace()
conditions = []
forbidden = []
# some statistics
ct = 0
cont_ct = 0
cat_ct = 0
ord_ct = 0
line_ct = 0
for line in pcs_string:
line_ct += 1
if "#" in line:
# It contains a comment
pos = line.find("#")
line = line[:pos]
# Remove quotes and whitespaces at beginning and end
ori_line = line
line = line.replace('"', "").replace("'", "")
line = line.strip()
if "|" in line:
# It's a condition
try:
c = pp_condition.parseString(line)
conditions.append(c)
except pyparsing.ParseException:
raise NotImplementedError("Could not parse condition: %s" % line)
continue
if "}" not in line and "]" not in line:
continue
if line.startswith("{") and line.endswith("}"):
forbidden.append(line)
continue
if len(line.strip()) == 0:
continue
ct += 1
param = None
create = {"int": UniformIntegerHyperparameter,
"float": UniformFloatHyperparameter,
"categorical": CategoricalHyperparameter,
"ordinal": OrdinalHyperparameter
}
try:
param_list = pp_cont_param.parseString(line)
name = param_list[0]
if param_list[1] == 'integer':
paramtype = 'int'
elif param_list[1] == 'real':
paramtype = 'float'
else:
paramtype = None
if paramtype in ['int', 'float']:
log = param_list[10:]
param_list = param_list[:10]
if len(log) > 0:
log = log[0]
lower = float(param_list[3])
upper = float(param_list[5])
log_on = True if "log" in log else False
default_value = float(param_list[8])
param = create[paramtype](name=name, lower=lower, upper=upper,
q=None, log=log_on, default_value=default_value)
cont_ct += 1
except pyparsing.ParseException:
pass
try:
if "categorical" in line:
param_list = pp_cat_param.parseString(line)
name = param_list[0]
#choices = [choice for choice in param_list[3:-4:2]]
ori_line_segs = ori_line.split('{')
choices_str = '[' + ori_line_segs[1].split('}')[0] + ']'
choices = json.loads(choices_str)
#default_value = param_list[-2]
ori_line_segs = ori_line.split('[')
default_str = ori_line_segs[-1].split(']')[0]
default_value = json.loads(default_str)
param = create["categorical"](name=name, choices=choices, default_value=default_value)
cat_ct += 1
elif "ordinal" in line:
param_list = pp_ord_param.parseString(line)
name = param_list[0]
#sequence = [seq for seq in param_list[3:-4:2]]
ori_line_segs = ori_line.split('{')
sequence_str = '[' + ori_line_segs[1].split('}')[0] + ']'
sequence = json.loads(sequence_str)
#default_value = param_list[-2]
ori_line_segs = ori_line.split('[')
default_str = ori_line_segs[-1].split(']')[0]
default_value = json.loads(default_str)
param = create["ordinal"](name=name, sequence=sequence, default_value=default_value)
ord_ct += 1
except pyparsing.ParseException:
pass
if param is None:
raise NotImplementedError("Could not parse: %s" % line)
configuration_space.add_hyperparameter(param)
for clause in forbidden:
param_list = pp_forbidden_clause.parseString(clause)
tmp_list = []
clause_list = []
for value in param_list[1:]:
if len(tmp_list) < 3:
tmp_list.append(value)
else:
# So far, only equals is supported by SMAC
if tmp_list[1] == '=':
# TODO maybe add a check if the hyperparameter is
# actually in the configuration space
clause_list.append(ForbiddenEqualsClause(
configuration_space.get_hyperparameter(tmp_list[0]),
tmp_list[2]))
else:
raise NotImplementedError()
tmp_list = []
configuration_space.add_forbidden_clause(ForbiddenAndConjunction(
*clause_list))
conditions_per_child = OrderedDict()
for condition in conditions:
child_name = condition[0]
if child_name not in conditions_per_child:
conditions_per_child[child_name] = list()
conditions_per_child[child_name].append(condition)
for child_name in conditions_per_child:
for condition in conditions_per_child[child_name]:
condition = condition[2:]
condition = ' '.join(condition)
if '||' in str(condition):
ors = []
# 1st case we have a mixture of || and &&
if '&&' in str(condition):
ors_combis = []
for cond_parts in str(condition).split('||'):
condition = str(cond_parts).split('&&')
# if length is 1 it must be or
if len(condition) == 1:
element_list = condition[0].split()
ors_combis.append(condition_specification(child_name, element_list, configuration_space))
else:
# now taking care of ands
ands = []
for and_part in condition:
element_list = [element for part in condition for element in and_part.split()]
ands.append(condition_specification(child_name, element_list, configuration_space))
ors_combis.append(AndConjunction(*ands))
mixed_conjunction = OrConjunction(*ors_combis)
configuration_space.add_condition(mixed_conjunction)
else:
# 2nd case: we only have ors
for cond_parts in str(condition).split('||'):
element_list = [element for element in cond_parts.split()]
ors.append(condition_specification(child_name, element_list, configuration_space))
or_conjunction = OrConjunction(*ors)
configuration_space.add_condition(or_conjunction)
else:
# 3rd case: we only have ands
if '&&' in str(condition):
ands = []
for cond_parts in str(condition).split('&&'):
element_list = [element for element in cond_parts.split()]
ands.append(condition_specification(child_name, element_list, configuration_space))
and_conjunction = AndConjunction(*ands)
configuration_space.add_condition(and_conjunction)
else:
# 4th case: we have a normal condition
element_list = [element for element in condition.split()]
normal_condition = condition_specification(child_name, element_list, configuration_space)
configuration_space.add_condition(normal_condition)
return configuration_space
