Paper: Down-stream effects of tree-to-dependency conversions

ACL ID N13-1070
Title Down-stream effects of tree-to-dependency conversions
Venue Annual Conference of the North American Chapter of the Association for Computational Linguistics
Session Main Conference
Year 2013

Dependency analysis relies on morphosyntac- tic evidence, as well as semantic evidence. In some cases, however, morphosyntactic ev- idence seems to be in conflict with seman- tic evidence. For this reason dependency grammar theories, annotation guidelines and tree-to-dependency conversion schemes often differ in how they analyze various syntactic constructions. Most experiments for which constituent-based treebanks such as the Penn Treebank are converted into dependency tree- banks rely blindly on one of four-five widely used tree-to-dependency conversion schemes. This paper evaluates the down-stream effect of choice of conversion scheme, showing that it has dramatic impact on end results.