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Update sequence_labeling.py #79

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Update sequence_labeling.py #79

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16 changes: 13 additions & 3 deletions seqeval/metrics/sequence_labeling.py
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Original file line number Diff line number Diff line change
Expand Up @@ -159,15 +159,15 @@ def get_entities(seq, suffix=False):
"""

def _validate_chunk(chunk, suffix):
if chunk in ['O', 'B', 'I', 'E', 'S']:
if chunk in ['O', 'B', 'I', 'E', 'S', 'M']:
return

if suffix:
if not chunk.endswith(('-B', '-I', '-E', '-S')):
if not chunk.endswith(('-B', '-I', '-E', '-S', '-M')):
warnings.warn('{} seems not to be NE tag.'.format(chunk))

else:
if not chunk.startswith(('B-', 'I-', 'E-', 'S-')):
if not chunk.startswith(('B-', 'I-', 'E-', 'S-', 'M')):
warnings.warn('{} seems not to be NE tag.'.format(chunk))

# for nested list
Expand Down Expand Up @@ -229,6 +229,12 @@ def end_of_chunk(prev_tag, tag, prev_type, type_):
chunk_end = True
if prev_tag == 'I' and tag == 'O':
chunk_end = True
if prev_tag == 'M' and tag == 'B':
chunk_end = True
if prev_tag == 'M' and tag == 'S':
chunk_end = True
if prev_tag == 'M' and tag == 'O':
chunk_end = True

if prev_tag != 'O' and prev_tag != '.' and prev_type != type_:
chunk_end = True
Expand Down Expand Up @@ -267,6 +273,10 @@ def start_of_chunk(prev_tag, tag, prev_type, type_):
chunk_start = True
if prev_tag == 'O' and tag == 'I':
chunk_start = True
if prev_tag == 'M' and tag == 'E':
chunk_start = True
if prev_tag == 'M' and tag == 'I':
chunk_start = True

if tag != 'O' and tag != '.' and prev_type != type_:
chunk_start = True
Expand Down