ISR11 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. TAB[OCRerr] OF CONTENTS (continued) Page SECTION IV (continued) D) The Concept Hierarchy . . . . . `v-27 [OCRerr]. Dictionary Per[OCRerr]ormance . e * . . . IV-32 A) The Null Thesaurus * . . e . . . IV-33 B) The Regular Thesaurus * * * . * . * IV-38 C) The Phrase Dictionary * * e * * e * IV-[OCRerr]2 5. Automatic Thesaurus Construction IV[OCRerr]1[OCRerr]4 A) rully-Automatic Methods B) Semi-Automatic Methods C) Sample Thesaurus Generation * * * * 9 * . `v48 * . * * * . * `v-SO `v-56 6. Semi-Automatic Hierarchy Foz[OCRerr]nation * * `v-59 SECTION V LESK, M. E., and SALTON, G.: 11Design Criteria for Aut[OCRerr]natic Information Systems" 1. Introducti9n V-i 2. The SM[OCRerr]T Experiments * * * * * * * V-3 3. Evaluation Results and Design Criteria V-Il A) Indexing Depth and Document Length B) Syno[OCRerr] Recognition e C) Phrase Processing e * D) Statistical Association Methods viii . . . V-Il v-16 . . . V-19 V-22