Faculty Candidate Seminar: Quality Control in Crowdsourcing Systems
January 20, 2017
Chenxi Qiu, Information Science and Technology, Penn State University
January 20, 2017 3:00 pm to 4:00 pm, 145/149 EE Building
Refreshments starting at 2:30 pm
Abstract
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Crowdsourcing allows many people to complete tasks of various difficulties with minimal
recruitment and administration costs. However, the lack of participant accountability
may entice people to complete as many tasks as possible without fully engaging in
them, jeopardizing the quality of responses. In this talk, I will first introduce
a dynamic and time efficient strategy that selects Crowdsourcing workers in a cost
efficient manner, while ensuring high accuracy of the overall task. And after, I will
introduce a dynamic contract from requester to workers to incentivize high-quality
work. In contrast to many existing pricing policies, our contract design is not only
adaptive to changes in workers’ behavior, but also adjusts pricing policy in the presence
of malicious behavior.
Biography
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Chenxi Qiu received his B.E. degree in Telecommunication Engineering from Xidian University,
Xi'an, China, in 2009, and Ph.D. degree in Computer Engineering from Clemson University
in 2015. He is now a Postdoc Scholar in the College of Information Science and Technology
at Penn State University. His research interests include networking, cybersecurity,
cloud computing, and cyber physical systems.