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Optimization Guidelines in Decision Based Design

[+] Author Affiliations
Vijitashwa Pandey, Monica Majcher, Zissimos P. Mourelatos

Oakland University, Rochester, MI

Paper No. DETC2012-71480, pp. 815-823; 9 pages
doi:10.1115/DETC2012-71480
From:
  • ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 7: 9th International Conference on Design Education; 24th International Conference on Design Theory and Methodology
  • Chicago, Illinois, USA, August 12–15, 2012
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-4506-6
  • Copyright © 2012 by ASME

abstract

In order to maximize the potential of decision based design, optimization should be an integral part of the process. In this paper, several guidelines are proposed while assessing and fitting utility functions, defining constraint sets, defining backtracking rules and choosing optimization algorithms. We discuss the central role convexity plays in optimization and how it is relevant to maximizing utility functions of risk-averse decision makers, which are the most common type of decision makers. Strong convexity and Lipschitz continuity are also relevant to the discussion since they allow finding optimal designs and facilitate proofs of convergence. The commonly used exponential form is shown to have these properties. We further discuss the motivation to backtrack within an optimization process in order to account for varying preferences of the decision maker across the design space. Design implications of these guidelines are also covered. We conclude with a summary of guidelines and observations. A discussion on future work regarding optimization under uncertain designer preferences is also presented.

Copyright © 2012 by ASME
Topics: Design , Optimization

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