SP500215 NIST Special Publication 500-215: The Second Text REtrieval Conference (TREC-2) Appendix B: System Features Appendix National Institute of Standards and Technology D. K. Harman ĢiA. QUERY CONSThU[OCRerr]ON -- AUTOM[OCRerr]CALLY BUILT QUERIES (ADHOC) [OCRerr]TEM NAME ] Doitmund [OCRerr] Cornell [OCRerr]_Berkeley T_Rutgers [OCRerr]_Siemens [OCRerr] UMASS [_VPI j Fields Mi ___________ _____________ [4] ____________ Computer Thue to Build 0.7 seconds [OCRerr]) 12h 20 min [1] 6/50 per query per query ___________ _____________ 12.1 [OCRerr]s Used to Construct [1 Weighting d on topic terms) Yes [2] Yes Yes Yes [5] ____________ Simple noun C' extraction Yes Yes No phrases ___________ Tagging & ctic Parsing noun phrase _____________ No __________ ___________ bracketing ___________ Sense Disambiguation ______________ _____________ No No (adjacent) r Noun Identification capitalized ______________ No words lizer No None [OCRerr] Patterns None stic Associations No None ision of Queries Previous Constructed Structure Yes None None Phrases from :11 Structure controlled list natic addition of Boolean [OCRerr]ctors/Proximity Operators No Yes [6] ___________ Reweighting of terms in a local context [3]