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update spanevaluator #4195

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Merged
merged 1 commit into from
Dec 28, 2022
Merged

update spanevaluator #4195

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13 changes: 7 additions & 6 deletions paddlenlp/metrics/span.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,28 +14,29 @@

from paddle.metric import Metric

from ..utils.tools import get_span, get_bool_ids_greater_than
from ..utils.tools import get_bool_ids_greater_than, get_span


class SpanEvaluator(Metric):
"""
SpanEvaluator computes the precision, recall and F1-score for span detection.
"""

def __init__(self):
def __init__(self, limit=0.5):
super(SpanEvaluator, self).__init__()
self.num_infer_spans = 0
self.num_label_spans = 0
self.num_correct_spans = 0
self.limit = limit

def compute(self, start_probs, end_probs, gold_start_ids, gold_end_ids):
"""
Computes the precision, recall and F1-score for span detection.
"""
pred_start_ids = get_bool_ids_greater_than(start_probs)
pred_end_ids = get_bool_ids_greater_than(end_probs)
gold_start_ids = get_bool_ids_greater_than(gold_start_ids.tolist())
gold_end_ids = get_bool_ids_greater_than(gold_end_ids.tolist())
pred_start_ids = get_bool_ids_greater_than(start_probs, self.limit)
pred_end_ids = get_bool_ids_greater_than(end_probs, self.limit)
gold_start_ids = get_bool_ids_greater_than(gold_start_ids.tolist(), self.limit)
gold_end_ids = get_bool_ids_greater_than(gold_end_ids.tolist(), self.limit)
num_correct_spans = 0
num_infer_spans = 0
num_label_spans = 0
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