Efficient algorithms for flexible sweep coverage in crowdsensing

Journal article


Huang, Peihuang, Zhu, Wenxing, Liao, Kewen, Sellis, Timos, Yu, Zhiyong and Guo, Longkun. (2018). Efficient algorithms for flexible sweep coverage in crowdsensing. IEEE Access. 6, pp. 50055-50065. https://doi.org/10.1109/ACCESS.2018.2868931
AuthorsHuang, Peihuang, Zhu, Wenxing, Liao, Kewen, Sellis, Timos, Yu, Zhiyong and Guo, Longkun
Abstract

Sweep coverage is an important covering technique in mobile crowdsensing, in which users or participants are employed to periodically monitor a set of points of interest (POIs) each with a weight indicating the value of its information to be collected. Traditionally, each user proposes a route along which there is a set of POIs to be monitored. The task is to select a set of participants such that the total weight of the monitored POIs is maximized. However, in real applications, users should have the flexibility to offer several preferred routes. This arises our studied maximum sweep assignment problem with flexibility, where each participant proposes several routes, and the new task is to strategically assign each participant a route among their choices in which the way maximizes the total weight of the monitored POIs. In this paper, we first prove that the problem is NP -complete and then devise two novel approximation algorithms with ratios 0.5 and 0.632. Experiments are also conducted to evaluate algorithms’ practical performance. The results demonstrate that the proposed approximate methods are significantly faster (with up to two orders of magnitude runtime reduction) than the exact integer linear programming solution. In addition, we theoretically study another flexible sweep coverage model in which it costs to hire each user, and the goal is to cover all POIs multiple times (for more complete and accurate information) while minimizing the total hiring cost.

Keywordssweep assignment; N P-complete; flexibility; crowdsensing; sensor networks
Year2018
JournalIEEE Access
Journal citation6, pp. 50055-50065
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISSN2169-3536
Digital Object Identifier (DOI)https://doi.org/10.1109/ACCESS.2018.2868931
Scopus EID2-s2.0-85052871134
Research or scholarlyResearch
Page range50055-50065
Publisher's version
License
All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Online06 Sep 2018
Publication process dates
Accepted03 Sep 2018
Deposited13 Jan 2022
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