TITLE:
A Parallel Processing Method for Moving Top-K Spatial Keyword Query
AUTHORS:
Kunlun Chen, Yanru Liu, Qingxu Deng
KEYWORDS:
Spatial Keywords, K Nearest Neighbors, Influential Set, Spatial Moving Query, Safe Region
JOURNAL NAME:
Journal of Software Engineering and Applications,
Vol.12 No.4,
April
25,
2019
ABSTRACT: We propose an influential set based moving k keyword query processing model, which avoids the shortcoming of safe region-based approaches that the update cost and update frequency cannot be optimized simultaneously. Based on the model, we design a parallel query processing method and a parallel validation method for multicore processing platforms. The time complexity of the algorithms is O((log|D|+p.k)/p.k)and O(log p.k), respectively, which are all O(1/k) times the time complexity of the state-of-the-art method. The experiment result confirms the superiority of our algorithms over the state-of-the-art method.