Iterative Utterance Segmentation for Neural Semantic Parsing

Authors

  • Yinuo Guo Peking University
  • Zeqi Lin Microsoft Research
  • Jian-Guang Lou Microsoft Research
  • Dongmei Zhang Microsoft Research

Keywords:

Lexical & Frame Semantics, Semantic Parsing

Abstract

Neural semantic parsers usually fail to parse long and complex utterances into correct meaning representations, due to the lack of exploiting the principle of compositionality. To address this issue, we present a novel framework for boosting neural semantic parsers via iterative utterance segmentation. Given an input utterance, our framework iterates between two neural modules: a segmenter for segmenting a span from the utterance, and a parser for mapping the span into a partial meaning representation. Then, these intermediate parsing results are composed into the final meaning representation. One key advantage is that this framework does not require any handcraft templates or additional labeled data for utterance segmentation: we achieve this through proposing a novel training method, in which the parser provides pseudo supervision for the segmenter. Experiments on Geo, ComplexWebQuestions and Formulas show that our framework can consistently improve performances of neural semantic parsers in different domains. On data splits that require compositional generalization, our framework brings significant accuracy gains: Geo 63.1~81.2, Formulas 59.7~72.7, ComplexWebQuestions 27.1~56.3.

Downloads

Published

2021-05-18

How to Cite

Guo, Y., Lin, Z., Lou, J.-G., & Zhang, D. (2021). Iterative Utterance Segmentation for Neural Semantic Parsing. Proceedings of the AAAI Conference on Artificial Intelligence, 35(14), 12937-12945. Retrieved from https://ojs.aaai.org/index.php/AAAI/article/view/17530

Issue

Section

AAAI Technical Track on Speech and Natural Language Processing I