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check the length of actual first #46

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check the length of actual first #46

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6 changes: 3 additions & 3 deletions Python/ml_metrics/average_precision.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,9 @@ def apk(actual, predicted, k=10):
The average precision at k over the input lists

"""
if not actual:
return 0.0

if len(predicted)>k:
predicted = predicted[:k]

Expand All @@ -33,9 +36,6 @@ def apk(actual, predicted, k=10):
num_hits += 1.0
score += num_hits / (i+1.0)

if not actual:
return 0.0

return score / min(len(actual), k)

def mapk(actual, predicted, k=10):
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