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# Preliminary Investigation of the Learnable Evolution Model' for Faster/Better Multiobjective Water Systems Design

3 DOLPHIN - Parallel Cooperative Multi-criteria Optimization
LIFL - Laboratoire d'Informatique Fondamentale de Lille, Inria Lille - Nord Europe
Abstract : The design of large scale water distribution systems is a very difficult optimisation problem which invariably requires the use of time-expensive simulations within the fitness function. The need to accelerate optimisation for such problems has not so far been seriously tackled. However, this is a very important issue, since as MOEAs become more and more recognised as the lsquoindustry standardrsquo technique for water system design, the demands placed on such systems (larger and larger water networks) will quickly meet with problems of scaleup. Meanwhile, LEM (Learnable Evolution Modelrsquo) has appeared in the Machine Learning literature, and provides a general approach to integrating machine learning into evolutionary search. Published results using LEM show very great promise in terms of finding near-optimal solutions with significantly reduced numbers of evaluations. Here we introduce LEMMO (Learnable Evolution Model for Multi-Objective optimization), which is a multi-objective adaptation of LEM, and we apply it to certain problems commonly used as benchmarks in the water systems community. Compared with NSGA-II, we find that LEMMO both significantly improves performance, and significantly reduces the number of evaluations needed to reach a given target. We conclude that the general approach used in LEMMO is a promising direction for meeting the scale-up challenges in multiobjective water system design.
Document type :
Conference papers

https://hal.inria.fr/inria-00001170
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Submitted on : Monday, March 27, 2006 - 3:16:47 PM
Last modification on : Thursday, January 20, 2022 - 4:20:48 PM
Long-term archiving on: : Saturday, April 3, 2010 - 11:03:06 PM

### Identifiers

• HAL Id : inria-00001170, version 1

### Citation

Laetitia Jourdan, David Corne, David W. Corne, Dragan Savic, Godfrey A. Walters. Preliminary Investigation of the Learnable Evolution Model' for Faster/Better Multiobjective Water Systems Design. Third International Conference on Evolutionary Multi-Criterion Optimization, Mar 2006, Guanajuato/ México. ⟨inria-00001170⟩

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