A vector space model for automatic indexing

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A vector space model for automatic indexing

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Communications of the ACM archive
Volume 18 , Issue 11 (November 1975) table of contents

Pages: 613 - 620

Year of Publication: 1975

ISSN:0001-0782

Authors

G. Salton	Cornell Univ., Ithaca, NY
A. Wong	Cornell Univ., Ithaca, NY
C. S. Yang	Cornell Univ., Ithaca, NY

Publisher

ACM New York, NY, USA

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ABSTRACT

In a document retrieval, or other pattern matching environment where stored entities (documents) are compared with each other or with incoming patterns (search requests), it appears that the best indexing (property) space is one where each entity lies as far away from the others as possible; in these circumstances the value of an indexing system may be expressible as a function of the density of the object space; in particular, retrieval performance may correlate inversely with space density. An approach based on space density computations is used to choose an optimum indexing vocabulary for a collection of documents. Typical evaluation results are shown, demonstating the usefulness of the model.

REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

	1	Gerard. Salton, Automatic Information Organization and Retrieval., McGraw Hill Text, 1968
	2	Salton, G., and Yang, C.S. On the specification of term values in automatic indexing. J. Documen. 29, 4 (Dec. 1973), 351-372.
	3	Sparck Jones, K. A statistical interpretation of term specificity and its application to retrieval. J. Documen. 28, 1 (March 1972), 11-20.
	4	Williamson, R.E. Real-time document retrieval. Ph.D. Th., Computer Sci. Dep., Cornell U., June 1974.
	5	Wong, A. An investigation of the effects of different indexing methods on the document space configuration. Sci. Rep. ISR-22, Computer Sci. Dep., Cornell U., Section II, Nov. 1974.
	6	Gerard Salton, Theory of Indexing, Society for Industrial and Applied Mathematics, Philadelphia, PA, 1975
	7	Salton, G., Yang, C.S., and Yu, C.T. Contribution to the theory of indexing. Proc. IFIP Congress 74, Stockholm, August 1974. American Elsevier, New York, 1974.

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