Sevim A and Eldawy A.
(2021). HQ-Filter: Hierarchy-Aware Filter For Empty-Resulting Queries in Interactive Exploration 2021 22nd IEEE International Conference on Mobile Data Management (MDM). 10.1109/MDM52706.2021.00019. 978-1-6654-2845-3. (49-58). https://ieeexplore.ieee.org/document/9474861/