- E. Hovy, J. Carbonell, Hans Chalupsky, A. Gershman, Alexander Hauptmann, Florian Metze, T. Mitamura, Zaid A. W. Sheikh, Ankit Dangi, Aditi Chaudhary, Xianyang Chen, Xiang Kong, Bernie Huang, Salvador Medina, H. Liu, Xuezhe Ma, Maria Ryskina, Ramon Sanabria, Varun Gangal. 2019. OPERA: Operations-oriented Probabilistic Extraction, Reasoning, and Analysis. Abstract: The OPERA system of CMU and USC/ISI performs end-to-end information extraction from multiple media and languages (English, Russian, Ukrainian), integrates the results, builds Knowledge Bases about the domain, and does hypothesis creation and reasoning to answer questions. 
