CRANV2 Appendix 4A 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. - 288 - APPENDIX 4A This appendix presents one set of search results, namely those obtained with the 1400 document collection and 221 questions using the Single Term Natural Language I.l:a, with Exhaustivity of Indexing 3, and Document Relevance 1-4. It shows, therefore, the individual question results which are summarised in Figure 4.100T. Against each question number is shown first the number of documents relevant to that particular question, the number of search terms in the question, together with the total number of postings for the search terms. At each coordination level is then shown the number of relevant and non- relevant documents which were retrieved. It will be noted that the sum of the documents retrieved equals the total number of postings. For instance, with question t, the retrievals at the various coordination levels of relevant and non-relevant documents are (reading from left to right), 22° 381, 14, 136, 9, 20, 3, 2, 1, and the sum of those is 588 which is the same as the figure given for the total number of postings. The significance of this point is discussed in Chapter 8.