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 CONSTRUCTION OF INDICES, KNOWI£DGE BASES, AND OIlIER DATA STRUCI'URES -- STATISTICS ON DATA STRUCTURES (CC SYSIEM NAME J DORIMUND [CORNEll I_BERKEIEY [__RUTGERS (3] r SIEMENS [OCRerr]_UMASS [ VPI [OCRerr]nowI[OCRerr] Bases None N/A Total Storage _____________ Number of Concepts represented Type of Representation _____________ Total Computer Build Time Total Manual Time Use of Manual ILabor (*) _______________ _____________ Auxiliary Files Needed (+) __________ LOUtI[OCRerr] Structures Yes [1] Yes [1] None None N/A `otal Storage (MB) 1.5 1.5 Total Computer Build Time 1.8 1.8 Automatic Process Yes Yes Number of Manual Hours Description of Method [OCRerr]her Data Structures Yes None Yes [4] None Yes (5 45 (D1/D2) Total Storage (MB) _______________ ___________ _____________ ________________ 36 (D3) Total Computer Build Time 2 (D1/D2) (Hours) _______________ ___________ _____________ ________________ 1.75 )D3) __________ ___________ Automatic Process Yes Yes Description of Method [2] ___________ ______________ ________________ ______________ __________ [6 (a) Mostly manually built using special interface (1,) Mostly machine built with manual correction (c) Initial core manually built to `bootstrap" for completely machine-built completion (d) Other (a) Machine-readable dictionary (1') Other