A paper on quality control methods for crowdsourced hierarchical classification tasks has been accepted for 2015 IEEE International Conference on Data Mining (ICDM):
Naoki Otani, Yukino Baba, Hisashi Kashima.
Quality Control for Crowdsourced Hierarchical Classification.
In Proceedings of the 2015 IEEE International Conference on Data Mining (ICDM), Atlantic City, NJ, USA, 2015.