Literature/1993/Ellis

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Ellis, David; Jonathan Furner-Hines & Peter Willett. (1993). "Measuring the degree of similarity between objects in text retrieval systems," Perspectives in Information Management 3(2): 128-149. Available at: http://works.bepress.com/furner/8

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University of Sheffield

AbstractEdit

Describes the use of a variety of similarity coefficients in the measurement of the degree of similarity between objects that contain textual information, such as documents, paragraphs, index terms or queries. The work is intended as a preliminary to future investigation of the calculations involved in measuring the degree of similarity between structured objects that may be represented in graph-theoretic forms. Discusses the role of similarity coefficients in text retrieval in terms of: document-query similarity; document-document similarity; co-citation analysis; term-term similarity; and the similarity between sets of judgements, such as relevance judgements. Describes several methods for expressing the formulae used to define similarity coefficients and compares their attributes. Concludes with details of the characteristics of similarity coefficients: equivalence and monotonicity; consideration of negative matches; geometric analyses; and the meaning of correlation coefficients.

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ChronologyEdit

  • Ellis, David; Jonathan Furner-Hines & Peter Willett. (1993). "Measuring the degree of similarity between objects in text retrieval systems," Perspectives in Information Management 3(2): 128-149. Available at: http://works.bepress.com/furner/8 [^]

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The shade of the bar looks invariant in isolation but variant in context, in (favor of) sharp contrast with the color gradient background, hence an innate illusion we have to reasonably interpret and overcome as well as the mirage. Such variance appearing seasonably from context to context may not only be the case with our vision but worldview in general in practice indeed, whether a priori or a posteriori. Perhaps no worldview from nowhere, without any point of view or prejudice at all!

Ogden & Richards (1923) said, "All experience ... is either enjoyed or interpreted ... or both, and very little of it escapes some degree of interpretation."

H. G. Wells (1938) said, "The human individual is born now to live in a society for which his fundamental instincts are altogether inadequate."