A Transition-based Parser for Unscoped Episodic Logical Forms
Abstract
"Episodic Logic:Unscoped Logical Form" (EL-ULF) is a semantic representation capturing predicate-argument structure as well as more challenging aspects of language within the Episodic Logic formalism. We present the first learned approach for parsing sentences into ULFs, using a growing set of annotated examples. The results provide a strong baseline for future improvement. Our method learns a sequence-to-sequence model for predicting the transition action sequence within a modified cache transition system. We evaluate the efficacy of type grammar-based constraints, a word-to-symbol lexicon, and transition system state features in this task. Our system is available at https://github.com/genelkim/ulf-transition-parser We also present the first official annotated ULF dataset at https://www.cs.rochester.edu/u/gkim21/ulf/resources/.
Keywords
Cite
@article{arxiv.2103.08759,
title = {A Transition-based Parser for Unscoped Episodic Logical Forms},
author = {Gene Louis Kim and Viet Duong and Xin Lu and Lenhart Schubert},
journal= {arXiv preprint arXiv:2103.08759},
year = {2021}
}