Heliyon
Volume 7, Issue 9, September 2021, e08035
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Research article
Graph NLU enabled question answering system

https://doi.org/10.1016/j.heliyon.2021.e08035Get rights and content
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Abstract

With a huge amount of information being stored as structured data, there is an increasing need for retrieving exact answers to questions from tables. Answering natural language questions on structured data usually involves semantic parsing of query to a machine understandable format which is then used to retrieve information from the database. Training semantic parsers for domain specific tasks is a tedious job and does not guarantee accurate results. In this paper, we used conversational analytics tool to create the user interface and to get the required entities and intents from the query thus avoiding the traditional semantic parsing approach. We then make use of Knowledge Graph for querying in structured data domain. Knowledge graphs can be easily leveraged for question answering systems, to use them as the database. We extract appropriate answers for different types of queries which have been illustrated in the Results section.

Keywords

Conversational analytics
Graph traversal
Knowledge graph
Natural language query
Question answering
Structured data
Tabular data

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