A Neural Semantic Parser for Math Problems Incorporating Multi-Sentence Information
Ruiyong Sun, Yijia Zhao, Qi Zhang, Keyu Ding, Shijin Wang, Wei Cui · ACM Transactions on Asian and Low-Resource Language Information Processing · 2019
In this article, we study the problem of parsing a math problem into logical forms. It is an essential pre-processing step for automatically solving math problems. Most of the existing studies about semantic parsing mainly focused on the single-sentence level. However, for parsing math problems, we need to take the information of multiple sentences into consideration. To achieve the task, we formulate the task as a machine translation problem and extend the sequence-to-sequence model with a novel two-encoder architecture and a word-level selective mechanism. For training and evaluating the proposed method, we construct a large-scale dataset. Experimental results show that the proposed two-encoder architecture and word-level selective mechanism could bring significant improvement. The proposed method can achieve better performance than the state-of-the-art methods.