Hughes Research Laboratories Trainable Text Skimmer: MUC-4 Test Results and Analysis Stephanie E August author Charles P Dolan author 1992 text Fourth Message Understanding Conference (MUC-4): Proceedings of a Conference Held in McLean, Virginia, June 16-18, 1992 conference publication august-dolan-1992-hughes https://aclanthology.org/M92-1010/ 1992