Quality Control for Crowdsourced Multi-label Classification Using RAkEL

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10634)

Abstract

The quality of labels is one of the major issues in crowdsourced labeling tasks. A convenient method for ensuring the quality of labels is to assign the same labeling task to multiple workers and aggregate the labels. Several statistical aggregation methods for single-label classification tasks have been proposed; however, for multi-label classification tasks has not been well studied. Although the existing aggregation methods for single-label classification tasks can be applied to the multi-label classification tasks, they are not designed to incorporate relationships among classes, or they require large computation time. To address these issues, we propose to use RAndom k-labELsets (RAkEL). By incorporating an existing aggregation method for single-label classification tasks into RAkEL, we propose a novel quality control method for crowdsourced multi-label classification. We demonstrate that our method achieves better quality than the existing methods with real data especially when spammers are included in the worker pool.

Keywords

Crowdsourcing Multi-label classification RAkEL 

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Kosuke Yoshimura
    • 1
  • Yukino Baba
    • 1
  • Hisashi Kashima
    • 1
    • 2
  1. 1.Department of Intelligence Science and Technology, Graduate School of InformaticsKyoto UniversityKyotoJapan
  2. 2.RIKEN Center for Advanced Intelligence ProjectTokyoJapan

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