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  • 1 University of Orego Institute of Theoretical Science 97403 Eugene Oregon (USA) 97403 Eugene Oregon (USA)
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With a view toward a system of science indicators which is flexible, appropriate, and unambiguous, a brief discussion is given of the theory of classification. This is then applied to three situations arising in input indicators for science, and it is shown how the presently used formalism for such indicators could be improved and thus eliminate unnecessary disputes in the practical application of such indicators.