Assessing the Uses of NLP-based Surrogate Models for Solving Expensive Multi-Objective Optimization Problems: Application to Potable Water Chains
- Florin Capitanescu, Antonino Marvuglia, Enrico Benetto, Aras Ahmadi, Ligia Tiruta-Barna
- Corresponding Author
- Florin Capitanescu
Available Online September 2015.
- https://doi.org/10.2991/ict4s-env-15.2015.2How to use a DOI?
- drinking water production plant, environmental impact, expensive multi-objective optimization, life cycle assessment, meta-heuristic algorithms, surrogate model
- In practice many multi-objective optimization problems relying on computationally expensive black-box model simulators of industrial processes have to be solved with limited computing time budget. In this context, this paper proposes and explores the uses of an iterative heuristic approach aiming at quickly providing a satisfactory accurate approximation of the Pareto front. The approach builds, in each iteration, a multi-objective nonlinear programming (MO-NLP) surrogate problem model using curve fitting of objectives and constraints. The approximated solutions of the Pareto front are generated by applying the "-constraint method to the multi-objective surrogate problem, converting it into a desired number of single objective (SO) NLP problems, for which mature and computationally efficient solvers exist. The proposed approach is applied to the cost versus life cycle assessment (LCA)-based environmental optimization of drinking water treatment chains. The paper thoroughly investigates various settings choices of the approach such as: the type of the polynomial function to be fit, the input points, choice of weights in curve fitting, and analytical fit. The numerical simulations results with the approach show that a good quality approximation of Pareto front can be obtained with a significantly smaller computational time than with the popular SPEA2 state-of-the-art metaheuristic algorithm.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Florin Capitanescu AU - Antonino Marvuglia AU - Enrico Benetto AU - Aras Ahmadi AU - Ligia Tiruta-Barna PY - 2015/09 DA - 2015/09 TI - Assessing the Uses of NLP-based Surrogate Models for Solving Expensive Multi-Objective Optimization Problems: Application to Potable Water Chains BT - EnviroInfo and ICT for Sustainability 2015 PB - Atlantis Press UR - https://doi.org/10.2991/ict4s-env-15.2015.2 DO - https://doi.org/10.2991/ict4s-env-15.2015.2 ID - Capitanescu2015/09 ER -