IRS13 Thesaurus, Phrase and Hierarchy Dictionaries chapter E. M. Keen Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. VII-59 References (contd.) [103 G. Salton, Automatic Phrase Matching, Information Storage and Retrieval, Report ISR-8, to the National Science Foundation, Section V, Harvard Computation Laboratory, December 1964. [11] G. Shapiro, Statistical Phrase Processing, Information Storage and Retrieval, Report ISR-9, to the National Science Foundation, Section VII, Harvard Computation Laboratory, August 1965. [12] R. T. Dattola and D. M. Murray, An Experiment in Automatic Thesaurus Construction, Student Re[OCRerr]Qrt, June 1967. [13] G. Shapiro, Processing of the Concept Hierarchy, Information Storage and Retrieval, Report ISR-7, to the National Science Foundation, Section V, Harvard Computation Laboratory, June 1964. [14] M. Razar and G. Shipiro, Hierarchy Set-up and Hierarchy and Concept-Concept Expar[OCRerr]sion Procedures, Information Storage and Retrieval, Report ISR-9, to the National Science Foundation, Section XV, Harvard Computation Laboratory, August 1965. [15] G. Blomgren, A. Goodman and L. Kelly, An Experimental Investi- gation of Automatic Hierarchy Generation, Information Storage and Retrieval, Report ISR-ll, to the National Science Foundation, Section VIII, Department of Computer Science, Cornell University, June 1966. [16] G. Salton and M. E. Lesk, Information Analysis and Dictionary Construction, Information Storage and Retrieval, Report ISR-1l, to the National Science Foundation, Section IV, Department of Computer Science, Cornell University, June 1966. [17] C. Cleverdon and M. Keen, Factors Determining the Performance of Indexing Systems, Vol. 2, Test Results, Aslib Cranfield Research Project, Cranf ield, 1966.