The tagger consists of three main modules: a preprocessor with multitagger and compound analyser, a grammar module for morphological disambiguation (Constraint Grammar) and a statistical module that removes the last of the remaining morphological ambiguity (only for Bokmål). The Constraint Grammar module uses a compiler developed at the University of Southern Denmark in Odense (visl.sdu.dk). The multitagger uses the lexicon Norsk ordbank.
The Oslo-Bergen Tagger is improved and modernised through the infrastructure project Clarino+ (clarin.w.uib.no).
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