Incremental top-k keyword queries in directed road networks

摘要

In this paper, we investigate the problem of processing and monitoring of incremental top-k spatial keyword queries in directed road networks (TkSK). Unfortunately, the existing solutions focuses on static top-k keyword queries on undirected road networks. We propose a safe-exit based approach to monitor the validity of the results for incremental top-k queries where query points are randomly moving in directed road networks.