CRANV2 Aslib Cranfield Research Project: Factors Determining the Performance of Indexing Systems: Volume 2 Main test results chapter Cyril Cleverdon Michael Keen Cranfield An investigation supported by a grant to Aslib by the National Science Foundation. Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. - 132 - 4. 500T 4. 501T 4. 502T 4.503T 4. 504P 4.505P 4. 506P 4.507P 4. 510T 4.511T 4.512T 4.513T 4. 514T 4.515T 4.516P 4.517P Search Rule A A A A A&B A&B A&B A&B A A C C D D A, C &D A, C&D Index Language I.l.a l.l.a 1.6.a 1.6.a I.l.a I.l,a 1.6.a 1.6.a I.l.a 1,6,a I.l.a 1.6.a I.l,a 1.6.a I.l.a 1.6.a No. of Questions 19 17 19 17 19 17 19 17 20 2O 2O 2O 2O 2O 2O 2O Question Subset Document Collection 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 Plot Plot 4,300T 4. 500T Plot 4. 301T 4. 501T Plot 4. 302T 4. 502T Plot 4,303T 4. 503T Plot 4.510T 4.512T 4. 514T Plot 4.511T 4. 513T 4.515T