IRS13 Table of Contents table of contents Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. TABLE OF CONTENTS (continued) Page IX. continued 5. Conclusions IX-SO References IX-52 X. KEEN, F. M. "An Analysis of the Documentation Requests11 1. Introduction X-l 2. Request Preparation X-i 3. Characteristics of the Requests X-2 A) Length X-2 B) Important Request Words X-3 C) Multiple Need Requests X-3 D) Unclear Requests X-5 E) Difficult Requests X-6 [OCRerr]. Relevance Decisions X-8 5. Request Performance X-9 A) General Performance Analysis Methods X-9 B) Variation in Generality, Length and Concept Frequency X-lO C) Comparison of Requests of the Two Preparers X-20 D) The Recognition of Important Request Words X-26 6. Performance Effectiveness and Search Procedures X-3[OCRerr] References X-L+l APPENDIX A "Recall-Precision Tables" A-i APPENDIX B "Original and Modified ADI Queries" B-i x