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Models and Algorithms for Optimal Piecewise-Linear Function Approximation

机译:最优分段线性函数逼近的模型和算法

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摘要

Piecewise-linear functions can approximate nonlinear and unknown functions for which only sample points are available. This paper presents a range of piecewise-linear models and algorithms to aid engineers to find an approximation that fits best their applications. The models include piecewise-linear functions with a fixed and maximum number of linear segments, lower and upper envelopes, strategies to ensure continuity, and a generalization of these models for stochastic functions whose data points are random variables. Derived from recursive formulations, the algorithms are applied to the approximation of the production function of gas-lifted oil wells.
机译:分段线性函数可以近似非线性和未知函数,对于这些函数,只有采样点可用。本文提出了一系列分段线性模型和算法,以帮助工程师找到最适合其应用的近似值。这些模型包括分段线性函数,具有固定和最大数量的线性段,上下包络,确保连续性的策略,以及这些模型对数据点为随机变量的随机函数的概括。该算法源自递归公式,适用于气举油井产量函数的近似估计。

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