SP500215 NIST Special Publication 500-215: The Second Text REtrieval Conference (TREC-2) Table of Contents table of contents National Institute of Standards and Technology D. K. Harman 15. Effective and Emcient Retrieval from Large and Dynamic Document Collections D. Knaus, P. Scha[OCRerr]uble (Swiss Federal Institute of Technology) 16. [OCRerr]-[OCRerr]ram-BasedTextFilteflngForTREC-2........................................... W. Cavnar (Environmental Research Institute of Michigan) 17. Retrieval of Partial Documents.......................................... A. Moffat, R. Sacks-Davis, R. Wilkinson, J. Zobel (CITRI, Royal Melbourne Institute of Technology) 18. GE in TREC-2: Results of a Boolean Approximation Method for Routing and Retrieval P. Jacobs (GE Research and Development Center) 19. TREC-lI Routing Experiments with the TRWIParacel Fast Data Finder M. Mettler (TRW Systems Development Division) 163 171 .....181 .....191 .201 20. Knowledge-Based Searching with TOPIC J. Lehman, C. Reid (Verity, Inc.) 21. On Expanding Query Vectors with Lexically Related Words E. Voorhees (Siemens Corporate Research, Inc.) 22. TREC-2 Document Retrieval Experiments using PIRCS K. Kwok, L. Grunfeld (Queens College, CUNY) 23. Combination of Multiple Searches E. Fox, J. Shaw (Virginia Tech) ...............209 223 233 243 24. Machine Learning for Knowledge-Based Document Routing (A Report on the TREC-2 Experiment)............... R. Tong, L. Appelbaum (Advanced Decision Systems) 25. The ConQuest System.............................. P. Nelson (ConQuest Software, Inc.) 26. Description of the PRC CEO Algorithm for TREC-2 P. Thompson (PRC, Inc.) 253 ........................ .........................265 271 27. Report of Progress for TREC-Il........................... W. Kelleher (Systems Environments Corporation) ..................275 28. UCLA-Okapi at TREC-2: Query Expansion Experiments........................................279 E. Efthimiadis, P. Biron (University of California at Los Angeles) 29. Incorporating Semantics Within a Connectionist Model and a Vector Processing Model.......291 R. Boyd, J. Driscoll (University of Central Florida) vi