Dealing with Co-reference in Neural Semantic Parsing
Rik van Noord, Johan Bos · University of Groningen research database (University of Groningen / Centre for Information Technology) · 2017
Linguistic phenomena like pronouns, control constructions, or co-reference give rise to co-indexed variables in meaning representations. We review three different methods for dealing with co-indexed variables in the output of neural semantic parsing of abstract meaning representations: (a) copying concepts during training and restoring co-indexation in a post-processing step; (b) explicit indexing of co-indexation; and (c) using absolute paths to designate co-indexing. The second method gives the best results and outperforms the baseline by 2.9 F-score points.