UD_French-FQB/README.md

# Enhanced UD for French UD treebanks

Graph-rewriting rules have been applied to UD_French_Sequoia, UD_French_FQB, UD_Frenc_FTB and UD_French_GSD (UD 2.5)
to produce enhanced UD treebanks for French.

The handled phenomena are described in (Candito et al., DEPLING 2017):

- subjects of infinitive verbs (for more cases than simple control and raising, see Candito et al. DEPLING 2017)

- neutralization of diathesis alternation

- distribution of coordinated dependents:
  -- coordinated subjects, obj, obliques, iobj; xcomp
  -- coordinated modifiers of nouns

- distribution of coordinated heads:
  -- distribution of subject of coordinated verbs
  -- distribution of complement of coordinated verbs (if attached to first conjunct, and posterior to last conjunct)
  -- distribution of modifier of coordinated nouns (same constraint)

The originality of the obtained enhanced graphs is the neutralization of diathesis alternation.

Labels of the form xxx@yyy (for instance "nsubj:pass@obj") mean that the observed function is xxx, but the deep (canonical) function is yyy.

Hence, in order to fully benefit from the neutralization of diathesis alternation, one can keep the canonical functions only,
namely the yyy part of the labels xxx@yyy.

# References

Candito M., Guillaume B., Perrier G. and Seddah D. 2017,
Enhanced UD Dependencies with Neutralized Diathesis Alternation, Proceedings of the Fourth International Conference on Dependency Linguistics (Depling 2017), Pisa, Italy, 2017.