Add BILUO docs to NER annotation scheme
@@ -86,6 +86,31 @@ include _annotation/_dep-labels
include _annotation/_named-entities
+ | showed that the minimal #[strong Begin], #[strong In], #[strong Out]
+ | scheme was more difficult to learn than the #[strong BILUO] scheme that
+ | we use, which explicitly marks boundary tokens.
+
++table(["Tag", "Description"])
+ +row
+ +cell #[code #[span.u-color-theme B] EGIN]
+ +cell The first token of a multi-token entity.
+
+ +row
+ +cell #[code #[span.u-color-theme I] N]
+ +cell An inner token of a multi-token entity.
+
+ +row
+ +cell #[code #[span.u-color-theme L] AST]
+ +cell The final token of a multi-token entity.
+
+ +row
+ +cell #[code #[span.u-color-theme U] NIT]
+ +cell A single-token entity.
+
+ +row
+ +cell #[code #[span.u-color-theme O] UT]
+ +cell A non-entity token.
+
+h(2, "json-input") JSON input format for training
p
