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World Wide Web

, Volume 20, Issue 6, pp 1211–1235 | Cite as

A context-aware approach for trustworthy worker selection in social crowd

  • Yang Zhao
  • Guanfeng LiuEmail author
  • Kai Zheng
  • An Liu
  • Zhixu Li
  • Xiaofang Zhou
Article

Abstract

Crowdsourcing applications like Amazon Mechanical Turk (AMT) make it possible to address many difficult tasks (e.g., image tagging and sentiment analysis) on the internet and make full use of the wisdom of crowd, where worker quality is one of the most crucial issues for the task owners. Thus, a challenging problem is how to effectively and efficiently select the high quality workers, so that the tasks online can be accomplished successfully under a certain budget. The existing methods on the crowd worker selection problem mainly based on the quality measurement of the crowd workers, those who have to register on the crowdsourcing platforms. With the connect of the OSNs and the crowdsourcing applications, the social contexts like social relationships and social trust between participants and social positions of participants can assist requestors to select one or a group of trustworthy crowdsourcing workers. In this paper, we first present a contextual social network structure and a concept of Strong Social Component (SSC), which emblems a group of workers who have high social contexts values. Then, we propose a novel index for SSC, and a new efficient and effective algorithm C-AWSA to find trustworthy workers, who can complete the tasks with high quality. The results of our experiments conducted on four real OSN datasets illustrate that the superiority of our method in trustworthy worker selection.

Keywords

Crowdsourcing Contextual social network Strong social component Trustworthy worker 

Notes

Acknowledgments

This work was partially supported by Natural Science Foundation of China (Grant Nos. 61303019, 61572336, 61532018, 61402313, 61502324), Doctoral Fund of Ministry of Education of China (20133201120012), Postdoctoral Science Foundation of China (2015M571805, 2016T90492), Collaborative Innovation Center of Novel Software Technology and Industrialization, Jiangsu, China, and Open Foundation of State Key Laboratory of Networking and Switching Technology (Beijing University of Posts and Telecommunications (SKLNST-2016-2-02).

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Yang Zhao
    • 1
  • Guanfeng Liu
    • 1
    • 3
    Email author
  • Kai Zheng
    • 1
  • An Liu
    • 1
  • Zhixu Li
    • 1
  • Xiaofang Zhou
    • 1
    • 2
  1. 1.School of Computer Science and TechnologySoochow UniversitySuzhouChina
  2. 2.School of Information Technology and Electrical EngineeringQueensland UniversitySt LuciaAustralia
  3. 3.State Key Laboratory of Networking and Switching Technology (Beijing University of Posts and Telecommunications)BeijingChina

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