Task-Management Method Using R-Tree Spatial Cloaking for Large-Scale Crowdsourcing

With the development of sensor technology and the popularization of the data-driven service paradigm, spatial crowdsourcing systems have become an important way of collecting map-based location data. However, large-scale task management and location privacy are important factors for participants in...

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Bibliographic Details
Published in:Symmetry (Basel) 2017-12, Vol.9 (12), p.311
Main Authors: Li, Yan, Shin, Byeong-Seok
Format: Article
Language:English
Subjects:
Crowdsourcing
large scale
Position (location)
Privacy
R-tree
spatial cloaking
spatial crowdsourcing
Spatial data
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Summary:With the development of sensor technology and the popularization of the data-driven service paradigm, spatial crowdsourcing systems have become an important way of collecting map-based location data. However, large-scale task management and location privacy are important factors for participants in spatial crowdsourcing. In this paper, we propose the use of an R-tree spatial cloaking-based task-assignment method for large-scale spatial crowdsourcing. We use an estimated R-tree based on the requested crowdsourcing tasks to reduce the crowdsourcing server-side inserting cost and enable the scalability. By using Minimum Bounding Rectangle (MBR)-based spatial anonymous data without exact position data, this method preserves the location privacy of participants in a simple way. In our experiment, we showed that our proposed method is faster than the current method, and is very efficient when the scale is increased.
ISSN:2073-8994
2073-8994
DOI:10.3390/sym9120311