Learning Robust Low-Rank Approximation for Crowdsourcing on Riemannian Manifold
- Publisher:
- Elsevier
- Publication Type:
- Journal Article
- Citation:
- Procedia Computer Science, 2017, 108C, pp. 285-294
- Issue Date:
- 2017-01-01
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Recently, crowdsourcing has attracted substantial research interest due to its efficiency in collecting labels for machine learning and computer vision tasks. This paper proposes a Rieman-nian manifold optimization algorithm, ROLA (Robust Low-rank Approximation), to aggregate the labels from a novel perspective. Specifically, a novel low-rank approximation model is proposed to capture underlying correlation among annotators meanwhile identify annotator-specific noise. More significantly, ROLA defines the label noise in crowdsourcing as annotator-specific noise, which can be well regularized by l2,1-norm. The proposed ROLA can improve the aggregation performance when compared with state-of-the-art crowdsourcing methods.
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