Abstract
In this work, we focus on complex question
semantic parsing and propose a novel Hierarchical Semantic Parsing (HSP) method, which
utilizes the decompositionality of complex
questions for semantic parsing. Our model
is designed within a three-stage parsing architecture based on the idea of decompositionintegration. In the first stage, we propose
a question decomposer which decomposes a
complex question into a sequence of subquestions. In the second stage, we design
an information extractor to derive the type
and predicate information of these questions.
In the last stage, we integrate the generated
information from previous stages and generate a logical form for the complex question.
We conduct experiments on COMPLEXWEBQUESTIONS which is a large scale complex question semantic parsing dataset, results
show that our model achieves significant improvement compared to state-of-the-art methods.