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BioMed Research International
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BioMed Research International
/
2015
/
Article
/
Tab 3
/
Research Article
Recognition and Evaluation of Clinical Section Headings in Clinical Documents Using Token-Based Formulation with Conditional Random Fields
Table 3
Orthographic features.
Feature name
Regular expression
ALLCAPS
∧
[
] + $
CAPSMIX
∧
[
]
(
] [
]∣[
] [
]) [
]
$
INITCAP
∧
[
]
PUNCTUATION
∧
[
.:]$