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Prevent division by zero in score weights

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This commit is contained in:
Ines Montani 2020-09-24 16:42:13 +02:00
parent 74ee456374
commit d0ef4a4cf5
2 changed files with 7 additions and 3 deletions
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5
spacy/tests/pipeline/test_pipe_factories.py
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@ -345,12 +345,13 @@ def test_language_factories_invalid():
[{"a": 100, "b": 400}, {"c": 0.5, "d": 0.5}],
{"a": 0.1, "b": 0.4, "c": 0.25, "d": 0.25},
),
([{"a": 0.5, "b": 0.5}, {"b": 1.0}], {"a": 0.25, "b": 0.75},),
([{"a": 0.5, "b": 0.5}, {"b": 1.0}], {"a": 0.25, "b": 0.75}),
([{"a": 0.0, "b": 0.0}, {"c": 0.0}], {"a": 0.0, "b": 0.0, "c": 0.0}),
],
)
def test_language_factories_combine_score_weights(weights, expected):
result = combine_score_weights(weights)
assert sum(result.values()) in (0.99, 1.0)
assert sum(result.values()) in (0.99, 1.0, 0.0)
assert result == expected

3
spacy/util.py
View File

@ -1233,6 +1233,9 @@ def combine_score_weights(
# components.
total = sum(w_dict.values())
for key, value in w_dict.items():
if total == 0:
weight = 0.0
else:
weight = round(value / total / len(all_weights), 2)
result[key] = result.get(key, 0.0) + weight
return result