Direction-Based Spatial-Textual Skyline

Zijun Chen, Shasha Guo, Wenyuan Liu
2017 International Journal of Innovative Computing, Information and Control  
Existing location-based services mostly recommend nearest objects to the user by considering their spatial distance and textual relevance. However, an object not only has a spatial distance to the user, but also has a direction from it to the user. In this paper, we study the direction-based fuzzy preference spatial-textual skyline query. Given a user location, a threshold theta and multiple keywords, skyline and p-skyline objects located at different directions are returned to user.
more » ... of the results depends on three aspects: spatial distance, textual similarity and direction. Two functions are introduced to compute the textual relevance and spatial proximity, respectively. A query algorithm is proposed, in which an effective pruning strategy is put forward to improve the query efficiency. In the end, empirical results show that our proposed method is effective and efficient.
doi:10.24507/ijicic.13.06.1813 fatcat:y6ehoubrnrgf7dprx7ginfzfcy