Tagged Sequence

A Tagged Sequence is a 2-Tuple composed of an observed string and a Tag String of equal string length (where each tag string member is a labeled item).

• AKA: Tag String, Tagged String.
• Context:
  • It can range from being a Manually Labeled Sequence to being an Automatically Labeled Sequence.
  • It can be the Output of a String Tagging Task.
  • It can (typically) have all Symbols mapped to one (possibly more) Item Tag(s) (typically from a specific Item Tag Set).
• Example(s):
  • a TaggedText, such as the tagged sentences:
    • (The/B government/I has/O other/B agencies/I and/I instruments/I for/O pursuing/O these/B other/I objectives/I), which was possibly the Output of a Chunking Task using the IOB Tag Set.
    • (Colorless/JJ green/JJ ideas/NNS sleep/VBP furiously/RB ./[[.]]), which may be the Output of a Part-of-Speech Tagging Task using the Penn Treebank POS Tag Set.
  • a Labeled DNA Sequence.
  • …
• Counter-Example(s):
  • a Classified String (a Labeled String).
  • a Segmented Sequence.
  • a Tagged Graph.
• See: Sequence Tagging Task, Tagged Sequence Dataset, Training Sequence.

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