Ning, Y., J. Jia, Z. Wu, R. Li, Y. An, Y. Wang, and H. Meng. “Multi-Task Deep Learning for User Intention Understanding in Speech Interaction Systems”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 31, no. 1, Feb. 2017, doi:10.1609/aaai.v31i1.10493.