ambiguity tag

ambiguity tag – also called portmanteau tag – a part-of-speech tag presenting two alternatives for a correct tag, which has a label consisting of two tags linked by a hyphen (such as VVD-VVN for VVD 'past tense' or VVN 'past participle'). Such a tag indicates that the automatic tagger was not able to determine the correct tag. As a result, both possible tags are assigned to the word. Ambiguity tags represent a small percentage of tags (in the BNC about 5 per cent) (cf. Baker 2006: 10; Garside 1997: 120, 148).

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