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Add search space validation for choice types #3975

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Jul 26, 2021
Merged

Add search space validation for choice types #3975

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06123ac
add search space validation for choice types
Jul 23, 2021
44cf25d
add message
Jul 23, 2021
c6f4528
fix nested
Jul 26, 2021
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4 changes: 4 additions & 0 deletions nni/common/hpo_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,10 @@ def validate_search_space(
raise ValueError(f'search space "{name}"\'s value is not a list : {spec}')

if type_ == 'choice':
if not all(isinstance(arg, (float, int, str)) for arg in args):
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Will it complain for nested space?

# FIXME: need further check for each algorithm which types are actually supported
# for now validation only prints warning so it doesn't harm
raise ValueError(f'search space "{name}" (choice) should only contain numbers or strings : {spec}')
continue

if type_.startswith('q'):
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2 changes: 2 additions & 0 deletions test/ut/sdk/test_hpo_utils.py
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Expand Up @@ -22,6 +22,7 @@
bad_fields = { 'x': { 'type': 'choice', 'value': ['a', 'b'] } }
bad_type_name = { 'x': { '_type': 'choic', '_value': ['a'] } }
bad_value = { 'x': { '_type': 'choice', '_value': 'ab' } }
bad_choice_args = { 'x': { '_type': 'choice', 'value': [ 'a', object() ] } }
bad_2_args = { 'x': { '_type': 'randint', '_value': [1, 2, 3] } }
bad_3_args = { 'x': { '_type': 'quniform', '_value': [0] } }
bad_int_args = { 'x': { '_type': 'randint', '_value': [1.0, 2.0] } }
Expand All @@ -37,6 +38,7 @@ def test_hpo_utils():
assert not validate_search_space(bad_fields, raise_exception=False)
assert not validate_search_space(bad_type_name, raise_exception=False)
assert not validate_search_space(bad_value, raise_exception=False)
assert not validate_search_space(bad_choice_args, raise_exception=False)
assert not validate_search_space(bad_2_args, raise_exception=False)
assert not validate_search_space(bad_3_args, raise_exception=False)
assert not validate_search_space(bad_int_args, raise_exception=False)
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