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Improve Warnings #161

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17 changes: 9 additions & 8 deletions bert_score/utils.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import os
import sys
import warnings
from collections import Counter, defaultdict
from functools import partial
from itertools import chain
Expand Down Expand Up @@ -554,18 +555,18 @@ def greedy_cos_idf(
F = F.view(L, B)

if torch.any(hyp_zero_mask):
print(
"Warning: Empty candidate sentence detected; setting raw BERTscores to 0.",
file=sys.stderr,
)
warning_message = "Empty candidate sentence detected; setting raw BERTscores to 0."
warnings.warn(warning_message)
sys.stdout.write(warning_message)

P = P.masked_fill(hyp_zero_mask, 0.0)
R = R.masked_fill(hyp_zero_mask, 0.0)

if torch.any(ref_zero_mask):
print(
"Warning: Empty reference sentence detected; setting raw BERTScores to 0.",
file=sys.stderr,
)
warning_message = "Empty reference sentence detected; setting raw BERTscores to 0."
warnings.warn(warning_message)
sys.stdout.write(warning_message)

P = P.masked_fill(ref_zero_mask, 0.0)
R = R.masked_fill(ref_zero_mask, 0.0)

Expand Down