Eckhard Bick - VISL

• 5. Tags can be integrated as meta-information in running text. This is an important
advantage for the user-friendliness of tagged corpora and the versatility of searching
tools.
• 6. Tags are easy to evaluate statistically and facilitate lexicographic corpus research.
• 7. Word based information is pedagogically transparent, and anticipates especially
children's intuition about grammatical structure. In principle, tags can be presented
not only as attached text, but also as colour-markings, underline highlights, subscripts
etc. (cp. chapter 7.2).
• 8. Grammatical information in tag-notation can easily be filtered into different
annotation schemes by standard text processing tools. It is easily accessible to
secondary application programs.
Traditionally, due to these special aspects, the tagging notation has appealed to only a
certain section of the linguistic community. The table shows typical target areas and the
role of tagging in a number of corpus annotation projects.
Users and non-users of word based tagging
user non-user or partial user
traditionally used for morphology: traditionally used for syntax
lexicon -> morphology -> word class word class -> syntax
analytical applications generative applications
Many big corpora (BNC, LOB, Bank of Some hand checked corpora (Suzanne,
English)
Penn Tree Bank)
Corpus-researchers (searching tools) Generative linguists
Hidden Markov Models
DCG, PSG, GPSG, HPSG - parsers (e.g.
TWOL (two level morphology)
Constraint Grammar
Probabilistic parsers (e.g. CLAWS,
PARTS, de Marcken)
ALVEY, TOSCA)
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