Smirnov, E., Zhang, H., Peeters, R., Nikolaev, N., & Imkamp, M. (2013). Aggregating Human-Expert Opinions for Multi-Label Classification. Proceedings of the AAAI Conference on Human Computation and Crowdsourcing, 1(1), 68–69. https://doi.org/10.1609/hcomp.v1i1.13120