From: Accelerating the annotation of sparse named entities by dynamic sentence selection
Word Unigram | w i , wi-1, wi+1 | &y i |
---|---|---|
POS Unigram | p i , pi-1, pi+1 | &y i |
Prefix, Suffix | prefixes of w i | &y i |
 | suffixes of w i | &y i |
 | (up to length 3) |  |
Normalized Word | N(w i ) | &y i |
Word Shape | S(w i ) | &y i |
Tag Bi-gram | true | &yi-1y i |