Paper: Copenhagen-Malmö: Tree Approximations of Semantic Parsing Problems

ACL ID S14-2034
Title Copenhagen-Malmö: Tree Approximations of Semantic Parsing Problems
Venue Joint Conference on Lexical and Computational Semantics
Session
Year 2014
Authors

In this shared task paper for SemEval- 2014 Task 8, we show that most se- mantic structures can be approximated by trees through a series of almost bijective graph transformations. We transform in- put graphs, apply off-the-shelf methods from syntactic parsing on the resulting trees, and retrieve output graphs. Us- ing tree approximations, we obtain good results across three semantic formalisms, with a 15.9% error reduction over a state- of-the-art semantic role labeling system on development data. Our system came in 3/6 in the shared task closed track.