Khandpur, R., Ji, T., Ning, Y., Zhao, L., Lu, C.-T., Smith, E., Adams, C. and Ramakrishnan, N. 2017. Determining Relative Airport Threats from News and Social Media. Proceedings of the AAAI Conference on Artificial Intelligence. 31, 2 (Feb. 2017), 4701-4707. DOI:https://doi.org/10.1609/aaai.v31i2.19097.