CRANV2 Aslib Cranfield Research Project: Factors Determining the Performance of Indexing Systems: Volume 2 Appendix 3A appendix 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. - 273 - Table of Fallout Ratios for a Generality_ Number of 8.0 R- 5 so 15 [OCRerr]o [OCRerr]5 30 35 40 45 50 P o,.5 8,o[OCRerr]4 16[OCRerr]o48 :[OCRerr] 4,o73 3[OCRerr]oo97 4o.121 48,s 45 56.169 64, t94 72.2t8 80,24= i.o 3-99[OCRerr] 7,984 11,976 15,96[OCRerr]3 19,96o [OCRerr]3,952 [OCRerr]7,944 3t,935 35-9z7 39,919 [OCRerr],o 1,976 3,952 5*927 7,903 9,879 11.[OCRerr]55 z3.831 t5.8o6 t7,782 19.758 3.o i.[OCRerr]o4 [OCRerr],6o[OCRerr] 3*911 5,[OCRerr]5 6.519 7,823 9,1[OCRerr]6 1o,43o 11o734 13-o38 4, o 0,968 1,935 2.903 3,871 4,039 5,806 6,774 7.742 8o71O 9,677 5-° o, 766 t, 532 2,2 98 3-o65 3,831 4, 597 5,363 6, 12.9 6. 895 7, 66* 7,5 o,.497 o,995 1,49z t,989 2, 487 2,954 3-481 3-978 4-476 4-973 1o, o 0.363 o.726 1.o89 1. 452 1,[OCRerr]315 a,177 2,54o 2,903 3,266 3,629 12,5 Oo283 0,565 0,847 1o129 1,41[OCRerr] 1,694 *-976 2°258 2"540 2"823 tS, o o,228 o.457 o,685 o.914 t,t 42 io371 t-599 t.828 =.o56 2°285 2o, o o,161 o,323 0,404 o,645 o,8o6 o,968 1,129 t-29o t. 452 1,613 [OCRerr]5.o o,121 0.2 42 o°363 o. 484 o.6o5 o°726 o°847 o-968 I,°89 %,21o 30°0 0.094 o,188 o.282 o,376 o, 47o o-565 o,659 o-753 o,847 o-941 35, o 0,075 o.15o 0°225 0,300 o.374 0,4:,9 o-5[OCRerr]4 o.599 0°674 o-749 4°.o o.o6o o.121 o.181 o.2 42 o,3o2 o,363 o, 4[OCRerr]3 o. 484 o,.544 o,6o5 45. o 0,049 o.o99 o.t48 o,197 0,2 46 o.[OCRerr]96 0,345 0-394 o, 444 o, 493' 5o.o o.o4° o.o81 o.t2t o,t61 o,2o2 o,242 o,282 o,323 o.363 0, 403 55, o o,o33 o,o66 o,o99 o,132 o°*65 o° 198 o.23i 0.264 0-297 o-33o 6o°o o.o27 o-°5 4 o°o[OCRerr]I o° 1o8 o, 13 4 o, t61 o, 188 0,2 t 5 o, 2.4[OCRerr] 0,269 65, o o,o22 o.o 43 o,o65 0.,087 o, *o9 o, 13o o, 152 o. 17 4 o. 195 o,2 t7 7o,o O,017 0.035 o*os2 o,069 o,o86 o,*o4 o,121 o,138 o,156 o*173 75, o o,ot3 o,o27 o°o 4o o°°5 4 0-067 o.o81 0,094 o. Io8 o°t2* o, 13 4 80.0 O, OtO 0.020 0°030 0,040 0,0[OCRerr]0 0,060 0,071 O,Oflt 0,091 0°I01 85,o 0,007 o,ot .1. o.ozt 0,028 0,036 o,o43 o,o5o o.o57 o.o64 0,07* 9o,o o.oo4 o.oo9 o.ot3 o,o18 o°o22 o°o27 o.o31 o.o36 0,04° o,o 45 9.[OCRerr],o "0, oo'[OCRerr] 0,004 0.006 o.oo8 o,ott o.ol3 o,ot5 o.o17 o.ot9 o,o21 o. ooo o, ooo o° ooo o°ooo 0, ooo o. ooo oo ooo o, ooo o, ooo o, ooo P.[OCRerr] 55 6o 65 70 75 80 85 9° 95 1oo P o.5 88.266 96.29° I.o 43.9iI 47.9o3 51.895 55.887 59.879 63.87[OCRerr] 67.863 71.855 75.847 79.839 [OCRerr].o 2t.734 23.71o 25.685 27.661 29.637 31°613 33.589 35.565 37.5 4o 39.5t6 3.o 14.341 15.645 16.949 18.253 19.556 2o.86o 22.164 23. 468 2 4.772 26.o75 4°0 1o.645 *I°613 12°581 13.548 14o516 iS. 484 16. 452 17° 419 i8*387 19°3[OCRerr] 5°o 8.437 9.194 9.96o *0.726 it. 492 t2.258 t3.o24 13.79o 14.556 15.323 7.5 5.47° 5.968 6.465 6.962 7- 460 7-927 8°454 8"952 9. 449 9.946 Io.o 3.992 4*355 4.718 5.o81 5" 444 5.8°6 6.169 6"532 6"895 7"258 i[OCRerr]. 5 3- 1o5 3- 387 3- 669 3- 952 4-23 4 4.516 4- 798 5°°81 [OCRerr]° 363 5.6 45 15.o 2.513 2.742 2.97o 3.199 3.4=7 3°656 3:8a4 4.112 4.341 4.57o so.o 1.774 1.935 2.o97 2.258 2.419 2.[OCRerr]81 [OCRerr].742 2.9o3 3°o65 3.226 25.o *.33' 1. 452 1.573 1.694 1.815 1.935 2.o56 2.177 2.298 2. 419 30.0 1.o35 1°1[OCRerr]9 1o223 *.317 1. 4[OCRerr]1 *.[OCRerr]o[OCRerr] Io599 1°694 1.788 1.882 35.0 o.82 4 °.899 o.974 1.o 48 1.123 1.198 1.=73 1.348 . I. 4[OCRerr]3 I. 498 4o.o 0-665 0-726 o.786 o.847 o.9o7 o.968 1.o28 1.o89 1.1 49 I°21o 45.0 o-[OCRerr]4[OCRerr] o.591 o.641 o.69o 0.739 o.789 0.838 o.887 o.936 0.986 [OCRerr]o. o o. 444 o. 48 4 O. 52 4 O. [OCRerr]65 o. 60 [OCRerr] o. 64[OCRerr] o. 68[OCRerr] o. 72 6 O. 766 O' 806 55" o o° 363 o. 396 o. 42 9 o, 462 o. 495 o. 518 o. 561 o. 594 o. 627 O. 660 60.o 0.296 o. 32 3 o. 3 49 o°376 o. 403 o. 43° o. 457 o° 484 o.$11 0°538 65. o o. 239 o.2 61 o.282 o. 30 4 O. 22 6 o. 3 47 o. 369 O. 29* o. 4* 3 o. 43 4 7o.o o-19° o-2o7 o°;25 0.2 4= 0.[OCRerr]59 0.276 o.294 o.2ii o.328 0-346 75.o o. t 48 o. ,61 o. 175 o.188 0.202 o.2 15 o.228 o.= 42 o.2[OCRerr] o.269 80.0 o. 111 o. 12 I O. 131 O° 1 41 o. 151 O° 161 o. 171 o. 181 o. *92 o. 202 85°o o°o78 o.oS[OCRerr] o.o93 o,*oo o,1o7 o, 114 o,121 o.128 0,135 0,142 9o°° 0"049 °"°54 °*°58 o-o63 o.o67 o.o72 o.o76 o.o8t o.085 0.090 95.o o.o[OCRerr]3 o.o-[OCRerr]5 o.o28 0.030 0.032 o.o34 o.o36 o.o38 0,o40 0.04= ioo.o o°ooo o.ooo o.ooo o.ooo 0.ooo o.ooo o.ooo o.ooo o.ooo o.ooo