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Table 7 Numbers of subtypes and possible feature groups in each feature type

From: NERBio: using selected word conjunctions, term normalization, and global patterns to improve biomedical named entity recognition

Feature Type

Subtype

# of Possible Feature Groups

Word

-

= 7

POS

-

= 7

Orthographical

17

× 17 = 119

Word shape

2

× 2 = 14

Affix

2

× 2 × 3 = 42

Word conjunction

-

= 21

Total

-

210

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BMC Bioinformatics

ISSN: 1471-2105

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