simple 'I', 'O', 'B' tagging throws error

[moritzblum]

Since the last commit, the simple 'I', 'O', 'B' tags are no longer supported.

from seqeval.metrics import f1_score

y_true = [['O', 'O', 'O', 'B', 'I', 'I', 'O'], ['B', 'I', 'O']]
y_pred = [['O', 'O', 'B', 'I', 'I', 'I', 'O'], ['B', 'I', 'O']]
f1_score(y_true, y_pred)

Throws error:
ValueError: Invalid tag is found: B

Is this behaviour intended?

[Hironsan]

Hmm, no. This is due to the validation.

[Hironsan]

Quickfix:

if chunk in ['O', 'B', 'I']:
    return