Abstract
A new approach to estimating approximation parameters is developed. In this approach, the distance of the approximating function from a given finite set of points is estimated by a vector criterion the components of which are the absolute values of residuals at all points. Using this criterion, the remoteness preference relation is defined, and the nondominated function with respect to this relation is considered to be the best approximating function. Approximation for several preference relations is studied, including the Pareto relation and the relation generated by the information about the equal importance of the criteria. Computational issues are considered and the relationship between the introduced approximating functions and the classical ones (obtained by the methods of least squares, least modulus, and the least maximum absolute value of deviation) are considered.
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This work was supported by the International Center of Decision Choice and Analysis.
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Translated by A. Klimontovich
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Nelyubin, A.P., Podinovski, V.V. Approximation of Functions Defined in Tabular Form: Multicriteria Approach. Comput. Math. and Math. Phys. 63, 730–742 (2023). https://doi.org/10.1134/S0965542523050147
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DOI: https://doi.org/10.1134/S0965542523050147