Title
Approval Voting and Incentives in Crowdsourcing.
Abstract
The growing need for labeled training data has made crowdsourcing an important part of machine learning. The quality of crowdsourced labels is, however, adversely affected by three factors: (1) the workers are not experts; (2) the incentives of the workers are not aligned with those of the requesters; and (3) the interface does not allow workers to convey their knowledge accurately, by forcing them to make a single choice among a set of options. In this paper, we address these issues by introducing approval voting to utilize the expertise of workers who have partial knowledge of the true answer, and coupling it with a (\"strictly proper\") incentive-compatible compensation mechanism. We show rigorous theoretical guarantees of optimality of our mechanism together with a simple axiomatic characterization. We also conduct preliminary empirical studies on Amazon Mechanical Turk which validate our approach.
Year
DOI
Venue
2015
10.1145/3396863
International Conference on Machine Learning
Keywords
Field
DocType
Proper scoring rules,incentives,labeling
Training set,Mathematical economics,Economics,Incentive,Axiom,Crowdsourcing,Empirical research,Approval voting
Journal
Volume
Issue
ISSN
abs/1502.05696
3
2167-8375
Citations 
PageRank 
References 
16
0.70
18
Authors
3
Name
Order
Citations
PageRank
Nihar B. Shah1120277.17
Dengyong Zhou234716.15
Yuval Peres3192.55