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- W3204353106 abstract "In this paper, piecewise-linear upper and lower bounds for univariate convex functions are derived that are only based on function value information. These upper and lower bounds can be used to approximate univariate convex functions. Furthermore, new sandwich algorithms are proposed that iteratively add new input data points in a systematic way until a desired accuracy of the approximation is obtained. We show that our new algorithms that use only function value evaluations converge quadratically under certain conditions on the derivatives. Under other conditions, linear convergence can be shown. Some numerical examples that illustrate the usefulness of the algorithm, including a strategic investment model, are given." @default.
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- W3204353106 date "2007-01-01" @default.
- W3204353106 modified "2023-09-26" @default.
- W3204353106 title "A Method For Approximating Univariate Convex Functions Using Only Function Value Evaluations" @default.
- W3204353106 hasPublicationYear "2007" @default.
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