Sentence Rewriting for Semantic Parsing
Bo Chen, Le Sun, Xianpei Han, Bo An · 2016
A major challenge of semantic parsing is the vocabulary mismatch problem between natural language and target ontology.In this paper, we propose a sentence rewriting based semantic parsing method, which can effectively resolve the mismatch problem by rewriting a sentence into a new form which has the same structure with its target logical form.Specifically, we propose two sentence-rewriting methods for two common types of mismatch: a dictionary-based method for 1-N mismatch and a template-based method for N-1 mismatch.We evaluate our sentence rewriting based semantic parser on the benchmark semantic parsing dataset -WEBQUESTIONS.Experimental results show that our system outperforms the base system with a 3.4% gain in F1, and generates logical forms more accurately and parses sentences more robustly.How many people live in chembakolli?How many people is in chembakolli?How many people live in chembakolli india?How many people live there chembakolli?How many people live there in chembakolli?What is the population of Chembakolli india?What currency is used on St Lucia?What is st lucia money?What is the money used in st lucia?What kind of money did st lucia have?What money do st Lucia use?Which money is used in St Lucia?