ISR11 A Modified Two-Level Search Algorithm Using Request Clustering chapter V. R. Lesser Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. VII-29 References [i] R. B. Bonner, On Some Clustering Techni[OCRerr]ues, IBM Journal of Research and Development, Vol. 8, No. 1, January 1962.. [2] H. Borko, The Construction of an Empirically Based Mathematically Derived Classification System, s?-585, October 1962. [3] H. Borko, Research in Computer Based Classification Systems, International Study Conference on Classification Research, l96J[OCRerr]. [1] R. M. Curtice and V. Rosenberg, Optimizing Retrieval Results with [OCRerr][OCRerr]n-Machine Interaction, Center for Information Sciences, Lehigh University. [5] P. Reisner, Construction of a Growin[OCRerr] Thesaurus by Conversati9nal Interaction in a Man-Machine System, in Some Problems in Information Science with Emphasis on Adaptation ts Use Through Man-Machine Interaction, editor, M. Kochen, IBM, l961[OCRerr]. [6] J. J. Rocchio, Document Retrieval System-Optimization and Rvaluation, Harvard University Doctoral Thesis, Report ISR-1O to the National Science Foundation, March 1966. [7] J. J. Rocchio and G. Salton, Information Search Optimization and Interactive Retrieval Technic[OCRerr]es, Proceedings of the Fall Joint Computer Conference, Las Vegas, November 1965. [8] C. Salton, A Document Retrieval System for Man-Machine Interaction Proceedings of the 19th National Conference, ACM Philadelphia, l9[OCRerr], pp. L2.3-l - L2.3-20. [9] C. Salton, The Bvaluation of Automatic Retrieval Procedures - Selected Test Results Using the S[OCRerr][OCRerr]T System, American Documentation, Vol. 16, No. 3, July 1965. [10] C. Salton, Information Storage and Retrieval, Report ISR-9 to the National Science Foundation. [11] G.Salton and M. Lesk, The SM[OCRerr]T Automatic Document Retrieval System - An Illustration, Communications of the ACM, Vol.8, No.6, June 1965. [12) H. B. Stiles, The Association Factor in Information Retrieval, Journal of the ACM, Vol.8, No.2, April 1961.