CRANV2 Simulated ranking and document output cut-off 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. - 209 - ORDER NORMALISED RECALL INDEX[OCRerr]G LANGUAGE 1 65.82 I-3 2= 65.23 1-2 "2= 65.23 S-13 4 65.13 S-9 5 65.00 I-1 6 64.94 S-11 7 64.88 S-6 8 64.82 S-14 9 64.47 I-6 ; J 64.41 I-8 11 64.05 I-7 12 63.64 S-8 12= 63.64 S-12 14 63. O5 I-5 14= 63.05 II-ll 16 62.94 S-10 1 ? 62.88 II-10 18 62.70 S-3 19 62.41 S-5 20 61.82 S-7 21 61 . 76 llI-1 21 = 61.76 III-2 23 61.17 I-9 24 61.06 S-2 25 60.94 IV-3 26 60.82 IV-4 27 60.11 III-3 28 59.76 IV-2 29 59.70 III-4 30 59.58 III-5 31 59.17 III-6 32 58.94 IV-1 33 58.64 S-1 34 58.58 S-4 35 57.41 /.I-15 36 57.11 II-9 37 55.88 II-13 38 55.76 H-8 39 55.41 II-12 40 55.05 II-5 41 53.88 II-7 42 53.52 H-3 43 52.47 II-14 44 52.05 II-4 45 51.82 II-8 46 47.41 II-2 47 44.64 II-1 Single terms. Word forms Single terms. Synonyms SMART Concon and indexing new qs. SMART Abstract and indexing new qs. Single terms. Natural language SMART Indexing new qs. and f null SMART Indexing new qs. SMART Concon and indexing f null Single terms. Synonyms, word form[OCRerr], quasi-synonyms Single terms. Hierarchy second stage Single terms. Hierarchy first stage SMART Abstracts and indexing f null SMART Indexing new qs. and f null Single terms. Synonyms. Quasi-synonyms Simple concepts. Hierarchical and alphabetical selection SMART Abstracts new qs. and indexing f null Simple concepts. Alphabetical second stage selection SMART Abstracts new qs.. SMART Indexing f null SMART Concon Controlled terms Controlled terms. Narrower terms Single terms. Hierarchy third stage Sl[OCRerr]ART Abstracts f null Abstracts. Natural language Abstracts. Word forms Controlled terms. Broader terms Titles. Word forms Cont rolled .terms. Related terms Controlled terms. Narrower and broader terms Controlled terms. Narrower, broader and related t'eVms Titles. Natural language SMART Abstracts old qs. SMART Indexing old qs. Simple concepts. Sim pl[OCRerr]e concepts. Simple concepts. Simple concepts. Simple concepts. Simple concepts. Simple concepts. Simple concepts. Simple concepts. Simple concepts. Simple concepts. Simple concepts. Simple concepts. Complete combination Alphabetical first stage selection Complete species and superordinate Hierarchical selection Complete species Selected species and super ordinate Selected coordinate and collateral Selected species Complete collateral Superordinate Selected coordinate Synonyms Natural language FIGURE 5.15T ORDER OF EFFECTIVENESS BASED ON NORMALISED RECALL FOR 33 CRANFIELD AND 14 SMART INDEX LANGUAGES {AVERAGE OF NUMBERS)