You are invited to the seminar of yosef breslav a student – MSc - Multi-Modal Multi-Objective Optimization with Solutions of Variable-Length

24 March 2021, 14:00 - 15:00 
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You are invited to the seminar of  a student  – MSc - Multi-Modal Multi-Objective Optimization with Solutions of Variable-Length

"ZOOM" SEMINAR

SCHOOL OF MECHANICAL ENGINEERING SEMINAR
Wednesday, March 24, 2021 at 14:00

 

Multi-Modal Multi-Objective Optimization with Solutions of Variable-Length

Yosef Breslav

M.Sc. student of Dr. Amiram Moshaiov

 

Abstract

 

Multi-modal optimization aims to provide decision-makers with alternative solutions, possibly near optimal, and not just one optimal solution. In recent years there has been a surge of interest on extending this approach to Pareto-based multi-objective optimization. This study appears to be the first one to focus on solving a special kind of Multi-modal Multi-objective Optimization Problems (MMOPs) in which solutions belong to decision-spaces of various dimensions (i.e., solutions of variable length).

First, a general problem definition for MMOPs with solutions of variable length is provided. Then, a solution framework is suggested to allow using standard Multi-modal Multi-objective Evolutionary Algorithms (MMEAs) to solve the considered type of problems. In addition, a novel MMEA is proposed. The algorithm, which is termed Archived Multi-Modal NSGA-II (amm-NSGA-II), constitutes a modification to the well-known NSGA-II to allow solving MMOPs.

Following the algorithm description, a real-life example with solutions of variable-length is suggested concerning optimal antennas’ layout-allocation design for a wireless communication network. Next, the proposed amm-NSGA-II is employed to solve three different optimal antennas’ layout-allocation design problems. When compared with other MMEAs, it is shown that the proposed algorithm provides not only better solution diversity in the decision-spaces, but also solutions with superior performance vectors. This superiority appears to be attributed to the type of archive that is used here, which leads to recommendations concerning future research.  

Join Zoom Meeting

https://us02web.zoom.us/j/88626960530?pwd=K0NRR3dheVcxRVUvVWtyRHhNTFZXQT09

 

 

Note: The seminar will be given in Hebrew.

 

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