Comments (5)
Hi @deplay, thanks for your pointing problem.
I have modified the metric calculation.
def calculate_scores(answers,predictions):
scores=[]
for key in answers:
if key not in predictions:
logging.error("Missing prediction for index {}.".format(key))
sys.exit()
answer = set(answers[key])
Avep = []
for k, p in enumerate(predictions[key]):
if p in answer:
Avep.append((len(Avep)+1)/(k+1))
scores.append(sum(Avep)/len(answer))
result={}
result['MAP']= round(np.mean(scores),4)
return result
Can you please check whether it's correct?
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In fact, we follow this paper in C.4 Evaluation Metrics. According the description of paper, the MAP@R is defined as the mean of average precision scores, each of which is evaluated for retrieving R most similar samples given a query. In our case, the set of queries is the set of all test programs. For a program, R is the number of other programs in the same class, i.e. R=499. Therefore, the calculation is same as the paper and all results are comparable. For distinguishing them, we follow the paper and call MAP@R instead of MAP.
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MISIM https://arxiv.org/pdf/2006.05265.pdf refers another paper Musgrave et.al A Metric Learning Reality Check, 2020. https://arxiv.org/pdf/2003.08505.pdf
In Musgrave's paper,they provide following contents:
In CodeXGLUE/Code-Code/Clone-detection-POJ-104/evaluator/evaluator.py,the essential implementation "scores.append(len(set(a&p))/len(a))" seems calculate R-Precision rather than MAP@R
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You are right. Thanks. We have corrected the evaluator.py and update the results.
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the implementation seems ok, and you may want to update here.
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