Table 3.

Orthographic features.

Feature name	Regular expression
ALLCAPS	∧[A − Z] + $
CAPSMIX	∧[A − z] ∗ ([A − Z] [a − z]∣[a − z] [A − Z]) [A − z] ∗ $
INITCAP	∧[A − Z]
PUNCTUATION	∧[∖.:]$