Improving Semantic Parsing with Neural Generator-Reranker Architecture

Abstract

Semantic parsing is the problem of deriving machine interpretable meaning representations from natural language utterances. Neural models with encoder-decoder architectures have recently achieved substantial improvements over traditional methods. Although neural semantic parsers appear to have relatively high recall using large beam sizes, there is room for improvement with respect to onebest precision. In this work, we propose a generator-reranker architecture for semantic parsing. The generator produces a list of potential candidates and the reranker, which consists of a pre-processing step for the candidates followed by a novel critic network, reranks these candidates based on the similarity between each candidate and the input sentence. We show the advantages of this approach along with how it improves the parsing performance through extensive analysis. We experiment our model on three semantic parsing datasets (GEO, ATIS, and OVERNIGHT). The overall architecture achieves the state-of-the-art results in all three datasets.

Question Answer System: A State-of-Art Representation of Quantitative and Qualitative Analysis

“…Generator-Reranker architecture is proposed by Inan et al [129]. The generator produces a list of potential candidates, and the reranker ranks these candidates based on the similarity between each candidate and the input sentence.Lu et al [130] have proposed the recall-oriented information extraction method.…”