Integration of expert knowledge into radial basis function surrogate models
Journal article, 2016

A current application in a collaboration between Chalmers University of Technology and Volvo Group Trucks Technology concerns the global optimization of a complex simulation-based function describing the rolling resistance coefficient of a truck tyre. This function is crucial for the optimization of truck tyres selection considered. The need to explicitly describe and optimize this function provided the main motivation for the research presented in this article. Many optimization algorithms for simulation-based optimization problems use sample points to create a computationally simple surrogate model of the objective function. Typically, not all important characteristics of the complex function (as, e.g., non-negativity)—here referred to as expert knowledge—are automatically inherited by the surrogate model. We demonstrate the integration of several types of expert knowledge into a radial basis function interpolation. The methodology is first illustrated on a simple example function and then applied to a function describing the rolling resistance coefficient of truck tyres. Our numerical results indicate that expert knowledge can be advantageously incorporated and utilized when creating global approximations of unknown functions from sample points.

Radial basis functions

Expert knowledge

Optimization

Rolling resistance coefficient

Approximation

Interpolation

Author

Zuzana Nedelkova

University of Gothenburg

Chalmers, Mathematical Sciences, Mathematics

Peter Lindroth

Volvo Group

Ann-Brith Strömberg

University of Gothenburg

Chalmers, Mathematical Sciences, Mathematics

Michael Patriksson

University of Gothenburg

Chalmers, Mathematical Sciences, Mathematics

Optimization and Engineering

1389-4420 (ISSN)

Vol. 17 3 577-603

TyreOpt - Fuel consumption reduction by tyre drag optimization

Swedish Energy Agency, 2012-01-01 -- 2015-12-31.

Chalmers, 2012-01-01 -- 2018-05-04.

Driving Forces

Sustainable development

Areas of Advance

Transport

Energy

Subject Categories

Computational Mathematics

Roots

Basic sciences

DOI

10.1007/s11081-015-9297-7

More information

Latest update

3/8/2019 1