Fang, H., F. Wu, Z. Zhao, X. Duan, Y. Zhuang, and M. Ester. “Community-Based Question Answering via Heterogeneous Social Network Learning”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 30, no. 1, Feb. 2016, doi:10.1609/aaai.v30i1.9972.