SP500215 GE in TREC-2: Results of a Boolean Approximation Method for Routing and Retrieval chapter P. Jacobs National Institute of Standards and Technology D. K. Harman References [1] C. Buckley, J. Allan, and G. Salton. Automatic rout- ing and ad-hoc retrieval using SMART: TREC-2. In Donna ilarman, editor, Proceedings of ihe Second Texi Reirieval Conference (TREC[OCRerr]2); Gaithersburg, MD, 1993. [2] W. Bruce Croft. The University of Massachusetts TIPSTER project. In Donna Harman, editor, Pro- ceedings of ihe Second Texi Reirieval Conference (TREC-2), Gaithersburg, MD, 1993. [3] P. Jacobs, G. Krupka, L. Rau, M. Mauldin, T. Mita- mura, T. Kitani, I. Sider, and L. Childs. The TIP- STER/SIIOGUN project. In Proceedings of ihe TIP- STER Phase I Final Meeling, September 1993. [4] Paul S. Jacobs. Using statistical methods to improve knowledge-based news categorization. IEEE Experi, 8(2):13-24, April 1993. [5] Paul S. Jacobs, George R. Krupka, and Lisa F. Rau. Lexico-semantic pattern matching as a com- panion to parsing in text understanding. In Fourih DARPA Speech and Nalural Language Workshop, pages 337-342, San Mateo, CA, February 1991. Morgan-Kaufmann. [6] George R. Krupka Paul S. Jacobs and Lisa F. Rau. A Boolean approximation method for query construc- tion and topic assignment in TREC. In Second Annual Symposium on Documeni Analysis and Inform alion Reirieval, May 1993. [7] Lisa F. Rau, George R. Krupka, and Paul S. Ja- cobs. GE NLToolset: MUC-4 test results and anal- ysis. In Proceedings of ihe Fourih Message Under- sianding Conference (MUC-[OCRerr], San Mateo, CA, June 1992. Morgan Kaufmann Publishers. 199