Uncertainty in Artificial Intelligence
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Learning to Predict from Crowdsourced Data
Wei Bi, Liwei Wang, James Kwok, Zhuowen Tu
Crowdsourcing services like Amazonâ??s Mechan- ical Turk have facilitated and greatly expedited the manual labeling process from a large number of human workers. However, spammers are often unavoidable and the crowdsourced labels can be very noisy. In this paper, we explicitly account for four sources for a noisy crowdsourced label: workerâ??s dedication to the task, his/her expertise, his/her default labeling judgement, and sample difficulty. A novel mixture model is employed for worker annotations, which learns a prediction model directly from samples to labels for effi- cient out-of-sample testing. Experiments on both simulated and real-world crowdsourced data sets show that the proposed method achieves signifi- cant improvements over the state-of-the-art.
Pages: 82-91
PS Link:
PDF Link: /papers/14/p82-bi.pdf
AUTHOR = "Wei Bi and Liwei Wang and James Kwok and Zhuowen Tu",
TITLE = "Learning to Predict from Crowdsourced Data",
BOOKTITLE = "Proceedings of the Thirtieth Conference Annual Conference on Uncertainty in Artificial Intelligence (UAI-14)",
ADDRESS = "Corvallis, Oregon",
YEAR = "2014",
PAGES = "82--91"

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