The following publications are possibly variants of this publication:
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- Answering why-not spatial keyword top-k queries via keyword adaptionLei Chen, Jianliang Xu, Xin Lin, Christian S. Jensen, Haibo Hu. icde 2016: 697-708 [doi]
- Research on why-not questions of top-K query in orthogonal regionGuohui Li, Ping Sun, Ling Yuan, Mingli Wang, Hongju Cheng. mta, 78(21):30197-30219, 2019. [doi]
- Why-Not Questions on Top-k Geo-Social Keyword Queries in Road NetworksJingwen Zhao, Yunjun Gao, Gang Chen, Rui Chen. icde 2018: 965-976 [doi]
- An Exact Top-k Query Algorithm with Privacy Protection in Wireless Sensor NetworksHuang Haiping, Feng Juan, Ruchuan Wang, Xiaolin Qin. ijdsn, 2014, 2014. [doi]