statistics: constant probability for comma (instead of preferring short attachment);
only relevant for disambiguation of different structures; comma attachments are removed in postprocessing
disable some tagging correction rules by default.
using a good tagger (and n-best tagging) makes these redundant / counter-productive
grammar: GMOD may modify first element of coordinated NP: "das A und O einer Beziehung"
(only if last element has distance 1 to conjunction, i.e. it has no determiner of its own)
adopt TüBa-style annotation of phone numbers etc.:
first token as apposition of preceding noun, subsequent tokens as attributes of the first one