Paper: To what extent does sentence-internal realisation reflect discourse context? A study on word order

ACL ID E12-1078
Title To what extent does sentence-internal realisation reflect discourse context? A study on word order
Venue Annual Meeting of The European Chapter of The Association of Computational Linguistics
Session Main Conference
Year 2012
Authors

We compare the impact of sentence- internal vs. sentence-external features on word order prediction in two generation settings: starting out from a discrimina- tive surface realisation ranking model for an LFG grammar of German, we enrich the feature set with lexical chain features from the discourse context which can be robustly detected and reflect rough gram- matical correlates of notions from theoreti- cal approaches to discourse coherence. In a more controlled setting, we develop a con- stituent ordering classifier that is trained on a German treebank with gold corefer- ence annotation. Surprisingly, in both set- tings, the sentence-external features per- form poorly compared to the sentence- internal ones, and do not improve over a baseline model capturing the syntactic functions of ...