Baba, Y., H. Kashima, K. Kinoshita, G. Yamaguchi, and Y. Akiyoshi. “Leveraging Crowdsourcing to Detect Improper Tasks in Crowdsourcing Marketplaces”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 27, no. 2, Oct. 2021, pp. 1487-92, doi:10.1609/aaai.v27i2.18987.