def test(self, file_path):
test_data = ConllxDataLoader().load(file_path)
save_dict = self._dict
tag_vocab = save_dict["tag_vocab"]
pipeline = save_dict["pipeline"]
index_tag = IndexerProcessor(vocab=tag_vocab,
field_name="tag",
new_added_field_name="truth",
is_input=False)
pipeline.pipeline = [index_tag] + pipeline.pipeline
test_data.rename_field("pos_tags", "tag")
pipeline(test_data)
test_data.set_target("truth")
prediction = test_data.field_arrays["predict"].content
truth = test_data.field_arrays["truth"].content
seq_len = test_data.field_arrays["word_seq_origin_len"].content
# padding by hand
max_length = max([len(seq) for seq in prediction])
for idx in range(len(prediction)):
prediction[idx] = list(
prediction[idx]) + ([0] * (max_length - len(prediction[idx])))
truth[idx] = list(truth[idx]) + ([0] *
(max_length - len(truth[idx])))
evaluator = SpanFPreRecMetric(tag_vocab=tag_vocab,
pred="predict",
target="truth",
seq_lens="word_seq_origin_len")
evaluator(
{
"predict": torch.Tensor(prediction),
"word_seq_origin_len": torch.Tensor(seq_len)
}, {"truth": torch.Tensor(truth)})
test_result = evaluator.get_metric()
f1 = round(test_result['f'] * 100, 2)
pre = round(test_result['pre'] * 100, 2)
rec = round(test_result['rec'] * 100, 2)
return {"F1": f1, "precision": pre, "recall": rec}
def test_case3(self):
number_labels = 4
# bio tag
fastnlp_bio_vocab = Vocabulary(unknown=None, padding=None)
fastnlp_bio_vocab.word_count = Counter(_generate_tags('BIO', number_labels))
fastnlp_bio_metric = SpanFPreRecMetric(tag_vocab=fastnlp_bio_vocab, only_gross=False)
bio_sequence = torch.FloatTensor([[[-0.4424, -0.4579, -0.7376, 1.8129, 0.1316, 1.6566, -1.2169,
-0.3782, 0.8240],
[-1.2348, -0.1876, -0.1462, -0.4834, -0.6692, -0.9735, 1.1563,
-0.3562, -1.4116],
[ 1.6550, -0.9555, 0.3782, -1.3160, -1.5835, -0.3443, -1.7858,
2.0023, 0.7075],
[-0.3772, -0.5447, -1.5631, 1.1614, 1.4598, -1.2764, 0.5186,
0.3832, -0.1540],
[-0.1011, 0.0600, 1.1090, -0.3545, 0.1284, 1.1484, -1.0120,
-1.3508, -0.9513],
[ 1.8948, 0.8627, -2.1359, 1.3740, -0.7499, 1.5019, 0.6919,
-0.0842, -0.4294]],
[[-0.2802, 0.6941, -0.4788, -0.3845, 1.7752, 1.2950, -1.9490,
-1.4138, -0.8853],
[-1.3752, -0.5457, -0.5305, 0.4018, 0.2934, 0.7931, 2.3845,
-1.0726, 0.0364],
[ 0.3621, 0.2609, 0.1269, -0.5950, 0.7212, 0.5959, 1.6264,
-0.8836, -0.9320],
[ 0.2003, -1.0758, -1.1560, -0.6472, -1.7549, 0.1264, 0.6044,
-1.6857, 1.1571],
[ 1.4277, -0.4915, 0.4496, 2.2027, 0.0730, -3.1792, -0.5125,
-0.5837, 1.0184],
[ 1.9495, 1.7145, -0.2143, -0.1230, -0.2205, 0.8250, 0.4943,
-0.9025, 0.0864]]])
bio_target = torch.LongTensor([[3, 6, 0, 8, 2, 4],
[4, 1, 7, 0, 4, 7]])
fastnlp_bio_metric({'pred': bio_sequence, 'seq_len': torch.LongTensor([6, 6])}, {'target': bio_target})
expect_bio_res = {'pre-1': 0.333333, 'rec-1': 0.333333, 'f-1': 0.333333, 'pre-2': 0.5, 'rec-2': 0.5,
'f-2': 0.5, 'pre-0': 0.0, 'rec-0': 0.0, 'f-0': 0.0, 'pre-3': 0.0, 'rec-3': 0.0,
'f-3': 0.0, 'pre': 0.222222, 'rec': 0.181818, 'f': 0.2}
self.assertDictEqual(expect_bio_res, fastnlp_bio_metric.get_metric())
def test_case4(self):
# bmes tag
def _generate_samples():
target = []
seq_len = []
vocab = Vocabulary(unknown=None, padding=None)
for i in range(3):
target_i = []
seq_len_i = 0
for j in range(1, 10):
word_len = np.random.randint(1, 5)
seq_len_i += word_len
if word_len == 1:
target_i.append('S')
else:
target_i.append('B')
target_i.extend(['M'] * (word_len - 2))
target_i.append('E')
vocab.add_word_lst(target_i)
target.append(target_i)
seq_len.append(seq_len_i)
target_ = np.zeros((3, max(seq_len)))
for i in range(3):
target_i = [vocab.to_index(t) for t in target[i]]
target_[i, :seq_len[i]] = target_i
return target_, target, seq_len, vocab
def get_eval(raw_target, pred, vocab, seq_len):
pred = pred.argmax(dim=-1).tolist()
tp = 0
gold = 0
seg = 0
pred_target = []
for i in range(len(seq_len)):
tags = [vocab.to_word(p) for p in pred[i][:seq_len[i]]]
spans = []
prev_bmes_tag = None
for idx, tag in enumerate(tags):
if tag in ('B', 'S'):
spans.append([idx, idx])
elif tag in ('M', 'E') and prev_bmes_tag in ('B', 'M'):
spans[-1][1] = idx
else:
spans.append([idx, idx])
prev_bmes_tag = tag
tmp = []
for span in spans:
if span[1] - span[0] > 0:
tmp.extend(['B'] + ['M'] * (span[1] - span[0] - 1) +
['E'])
else:
tmp.append('S')
pred_target.append(tmp)
for i in range(len(seq_len)):
raw_pred = pred_target[i]
start = 0
for j in range(seq_len[i]):
if raw_target[i][j] in ('E', 'S'):
flag = True
for k in range(start, j + 1):
if raw_target[i][k] != raw_pred[k]:
flag = False
break
if flag:
tp += 1
start = j + 1
gold += 1
if raw_pred[j] in ('E', 'S'):
seg += 1
pre = round(tp / seg, 6)
rec = round(tp / gold, 6)
return {
'f': round(2 * pre * rec / (pre + rec), 6),
'pre': pre,
'rec': rec
}
target, raw_target, seq_len, vocab = _generate_samples()
pred = torch.randn(3, max(seq_len), 4)
expected_metric = get_eval(raw_target, pred, vocab, seq_len)
metric = SpanFPreRecMetric(vocab, encoding_type='bmes')
metric({
'pred': pred,
'seq_len': torch.LongTensor(seq_len)
}, {'target': torch.from_numpy(target)})
# print(metric.get_metric(reset=False))
# print(expected_metric)
metric_value = metric.get_metric()
for key, value in expected_metric.items():
self.assertAlmostEqual(value, metric_value[key], places=5)
def tese_case3(self):
from fastNLP.core.vocabulary import Vocabulary
from collections import Counter
from fastNLP.core.metrics import SpanFPreRecMetric
# 与allennlp测试能否正确计算f metric
#
def generate_allen_tags(encoding_type, number_labels=4):
vocab = {}
for i in range(number_labels):
label = str(i)
for tag in encoding_type:
if tag == 'O':
if tag not in vocab:
vocab['O'] = len(vocab) + 1
continue
vocab['{}-{}'.format(
tag, label)] = len(vocab) + 1 # 其实表达的是这个的count
return vocab
number_labels = 4
# bio tag
fastnlp_bio_vocab = Vocabulary(unknown=None, padding=None)
fastnlp_bio_vocab.word_count = Counter(
generate_allen_tags('BIO', number_labels))
fastnlp_bio_metric = SpanFPreRecMetric(tag_vocab=fastnlp_bio_vocab,
only_gross=False)
bio_sequence = torch.FloatTensor(
[[[
-0.9543, -1.4357, -0.2365, 0.2438, 1.0312, -1.4302, 0.3011,
0.0470, 0.0971
],
[
-0.6638, -0.7116, -1.9804, 0.2787, -0.2732, -0.9501, -1.4523,
0.7987, -0.3970
],
[
0.2939, 0.8132, -0.0903, -2.8296, 0.2080, -0.9823, -0.1898,
0.6880, 1.4348
],
[
-0.1886, 0.0067, -0.6862, -0.4635, 2.2776, 0.0710, -1.6793,
-1.6876, -0.8917
],
[
-0.7663, 0.6377, 0.8669, 0.1237, 1.7628, 0.0313, -1.0824,
1.4217, 0.2622
]],
[[
0.1529, 0.7474, -0.9037, 1.5287, 0.2771, 0.2223, 0.8136,
1.3592, -0.8973
],
[
0.4515, -0.5235, 0.3265, -1.1947, 0.8308, 1.8754, -0.4887,
-0.4025, -0.3417
],
[
-0.7855, 0.1615, -0.1272, -1.9289, -0.5181, 1.9742, -0.9698,
0.2861, -0.3966
],
[
-0.8291, -0.8823, -1.1496, 0.2164, 1.3390, -0.3964, -0.5275,
0.0213, 1.4777
],
[
-1.1299, 0.0627, -0.1358, -1.5951, 0.4484, -0.6081, -1.9566,
1.3024, 0.2001
]]])
bio_target = torch.LongTensor([[5., 0., 3., 3., 3.],
[5., 6., 8., 6., 0.]])
fastnlp_bio_metric(
{
'pred': bio_sequence,
'seq_lens': torch.LongTensor([5, 5])
}, {'target': bio_target})
expect_bio_res = {
'pre-1': 0.24999999999999373,
'rec-1': 0.499999999999975,
'f-1': 0.33333333333327775,
'pre-2': 0.0,
'rec-2': 0.0,
'f-2': 0.0,
'pre-3': 0.0,
'rec-3': 0.0,
'f-3': 0.0,
'pre-0': 0.0,
'rec-0': 0.0,
'f-0': 0.0,
'pre': 0.12499999999999845,
'rec': 0.12499999999999845,
'f': 0.12499999999994846
}
self.assertDictEqual(expect_bio_res, fastnlp_bio_metric.get_metric())
#bmes tag
bmes_sequence = torch.FloatTensor(
[[[
0.6536, -0.7179, 0.6579, 1.2503, 0.4176, 0.6696, 0.2352,
-0.4085, 0.4084, -0.4185, 1.4172, -0.9162, -0.2679, 0.3332,
-0.3505, -0.6002
],
[
0.3238, -1.2378, -1.3304, -0.4903, 1.4518, -0.1868, -0.7641,
1.6199, -0.8877, 0.1449, 0.8995, -0.5810, 0.1041, 0.1002,
0.4439, 0.2514
],
[
-0.8362, 2.9526, 0.8008, 0.1193, 1.0488, 0.6670, 1.1696,
-1.1006, -0.8540, -0.1600, -0.9519, -0.2749, -0.4948,
-1.4753, 0.5802, -0.0516
],
[
-0.8383, -1.7292, -1.4079, -1.5023, 0.5383, 0.6653, 0.3121,
4.1249, -0.4173, -0.2043, 1.7755, 1.1110, -1.7069, -0.0390,
-0.9242, -0.0333
],
[
0.9088, -0.4955, -0.5076, 0.3732, 0.0283, -0.0263, -1.0393,
0.7734, 1.0968, 0.4132, -1.3647, -0.5762, 0.6678, 0.8809,
-0.3779, -0.3195
]],
[[
-0.4638, -0.5939, -0.1052, -0.5573, 0.4600, -1.3484, 0.1753,
0.0685, 0.3663, -0.6789, 0.0097, 1.0327, -0.0212, -0.9957,
-0.1103, 0.4417
],
[
-0.2903, 0.9205, -1.5758, -1.0421, 0.2921, -0.2142, -0.3049,
-0.0879, -0.4412, -1.3195, -0.0657, -0.2986, 0.7214, 0.0631,
-0.6386, 0.2797
],
[
0.6440, -0.3748, 1.2912, -0.0170, 0.7447, 1.4075, -0.4947,
0.4123, -0.8447, -0.5502, 0.3520, -0.2832, 0.5019, -0.1522,
1.1237, -1.5385
],
[
0.2839, -0.7649, 0.9067, -0.1163, -1.3789, 0.2571, -1.3977,
-0.3680, -0.8902, -0.6983, -1.1583, 1.2779, 0.2197, 0.1376,
-0.0591, -0.2461
],
[
-0.2977, -1.8564, -0.5347, 1.0011, -1.1260, 0.4252, -2.0097,
2.6973, -0.8308, -1.4939, 0.9865, -0.3935, 0.2743, 0.1142,
-0.7344, -1.2046
]]])
bmes_target = torch.LongTensor([[9., 6., 1., 9., 15.],
[6., 15., 6., 15., 5.]])
fastnlp_bmes_vocab = Vocabulary(unknown=None, padding=None)
fastnlp_bmes_vocab.word_count = Counter(
generate_allen_tags('BMES', number_labels))
fastnlp_bmes_metric = SpanFPreRecMetric(tag_vocab=fastnlp_bmes_vocab,
only_gross=False,
encoding_type='bmes')
fastnlp_bmes_metric(
{
'pred': bmes_sequence,
'seq_lens': torch.LongTensor([20, 20])
}, {'target': bmes_target})
expect_bmes_res = {
'f-3': 0.6666666666665778,
'pre-3': 0.499999999999975,
'rec-3': 0.9999999999999001,
'f-0': 0.0,
'pre-0': 0.0,
'rec-0': 0.0,
'f-1': 0.33333333333327775,
'pre-1': 0.24999999999999373,
'rec-1': 0.499999999999975,
'f-2': 0.7499999999999314,
'pre-2': 0.7499999999999812,
'rec-2': 0.7499999999999812,
'f': 0.49999999999994504,
'pre': 0.499999999999995,
'rec': 0.499999999999995
}
self.assertDictEqual(fastnlp_bmes_metric.get_metric(), expect_bmes_res)