Coverage-Oriented Task Assignment for Mobile Crowdsensing

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Article number9052743
Pages (from-to)7407-7418
Number of pages12
Journal / PublicationIEEE Internet of Things Journal
Issue number8
Online published1 Apr 2020
Publication statusPublished - Aug 2020


Crowdsensing tasks are usually described by certain features or attributes, and the task assignment essentially performs a matching w.r.t. worker or user’s preference on these features. However, existing matching strategy could lead to an misaligned task coverage problem, i.e., some popular tasks tend to enter workers’ candidate task lists, while some less popular tasks could be always unsuccessfully assigned. To ensure task coverage after the assignment, the system may have to increase their biding costs to reassign such tasks, which causes a high operational cost of the crowdsensing system. To address this problem, we propose to migrate certain qualified workers to the less popular tasks for increasing the task coverage and meanwhile optimize other performance factors. By doing this, other performance factors, such as the task acceptance and quality, can be comparably achieved as recent designs, while the system cost can be largely reduced. Following this idea, this paper presents cTaskMat, which learns and exploits workers’ task preferences to achieve coverage-ensured task assignments. We implement the cTaskMat design and evaluate its performance using both real-world experiments and dataset driven evaluations, also with the comparison with the state-of-the-art designs.

Research Area(s)

  • Mobile crowdsensing, Task assignment, Task coverage, Preference

Citation Format(s)

Coverage-Oriented Task Assignment for Mobile Crowdsensing. / Song, Shiwei; Liu, Zhidan; Li, Zhenjiang; Xing, Tianzhang; Fang, Dingyi.

In: IEEE Internet of Things Journal, Vol. 7, No. 8, 9052743, 08.2020, p. 7407-7418.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal