A Simple Algorithm for Approximation by Nomographic Functions

Steffen Limmer; Jafar Mohammadi; Slawomir Stanczak

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arXiv · 1504.05474

A Simple Algorithm for Approximation by Nomographic Functions

Steffen Limmer·Jafar Mohammadi·Slawomir Stanczak

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Abstract

This paper introduces a novel algorithmic solution for the approximation of a given multivariate function by a nomographic function that is composed of a one-dimensional continuous and monotone outer function and a sum of univariate continuous inner functions. We show that a suitable approximation can be obtained by solving a cone-constrained Rayleigh-Quotient optimization problem. The proposed approach is based on a combination of a dimensionwise function decomposition known as Analysis of Variance (ANOVA) and optimization over a class of monotone polynomials. An example is given to show that the proposed algorithm can be applied to solve problems in distributed function computation over multiple-access channels.

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Steffen Limmer, Jafar Mohammadi, Slawomir Stanczak. 2015-04-21. A Simple Algorithm for Approximation by Nomographic Functions. https://arxiv.org/abs/1504.05474

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