Title
Difficulty-Controllable Multi-hop Question Generation from Knowledge Graphs
Abstract
Knowledge graphs have become ubiquitous data sources and their utility has been amplified by the research on ability to answer carefully crafted questions over knowledge graphs. We investigate the problem of question generation (QG) over knowledge graphs wherein, the level of difficulty of the question can be controlled. We present an end-to-end neural network-based method for automatic generation of complex multi-hop questions over knowledge graphs. Taking a subgraph and an answer as input, our transformer-based model generates a natural language question. Our model incorporates difficulty estimation based on named entity popularity, and makes use of this estimation to generate difficulty-controllable questions. We evaluate our model on two recent multi-hop QA datasets. Our evaluation shows that our model is able to generate high-quality, fluent and relevant questions.
Year
DOI
Venue
2019
10.1007/978-3-030-30793-6_22
Lecture Notes in Computer Science
Keywords
DocType
Volume
Question generation,Knowledge graph,Natural language processing,Transformer,Neural network
Conference
11778
ISSN
Citations 
PageRank 
0302-9743
1
0.36
References 
Authors
0
6
Name
Order
Citations
PageRank
Vishwajeet Kumar174.45
Yuncheng Hua210.70
Ganesh Ramakrishnan352159.32
Guilin Qi496188.58
Lianli Gao555042.85
Yuan Fang Li69413.51