نتایج جستجو برای: ga optimization

تعداد نتایج: 347947  

2002
Akio YAMAMOTO Hiroshi HASHIMOTO

The distributed genetic algorithm (DGA) is applied for loading pattern optimization problems of the pressurized water reactors. A basic concept of DGA follows that of the conventional genetic algorithm (GA). However, DGA equally distributes candidates of solutions (i.e. loading patterns) to several independent “islands” and evolves them in each island. Communications between islands, i.e. migra...

2000
P. J. Fleming K. J. Shaw

Genetic algorithms (GAs) are optimization tools that simulate evolutionary processes in order to develop solutions for a wide range of optimization problems. In recent years, they have increasingly gained acceptance in industry, as confidence improves in their abilities to solve complex problems that have previously appeared to be unsolvable. One example of an industrial application for GAs is ...

Journal: :مدیریت صنعتی 0
محمدحسین پورکاظمی دانشیار گروه اقتصاد، دانشکده اقتصاد و علوم سیاسی دانشگاه شهیدبهشتی، ایران مصطفی فتاحی دانشجوی دکترای مدیریت تحقیق در عملیات، دانشکده مدیریت دانشگاه تهران، ایران ساسان مظاهری دانشجوی کارشناسی ارشد مدیریت صنعتی، دانشکده مدیریت و حسابداری دانشگاه شهیدبهشتی، ایران بهرنگ اسدی دانشجوی کارشناسی ارشد mba، ، دانشکده مدیریت و اقتصاد دانشگاه صنعتی شریف، ایران

due to project evaluation complexity and resource constraints, the project portfolio optimization is numerous decision making challenges. hence, many researches have been done to introduce model and methods for portfolio optimization. but most of them have not considered the interaction between projects. considering the interactions between projects increase complexity of portfolio optimization...

In this paper proposes a fuzzy multi-objective hybrid Genetic and Bee colony optimization algorithm(GA-BCO) to find the optimal restoration of loads of power distribution network under fault.Restoration of distribution systems is a complex combinatorial optimization problem that should beefficiently restored in reasonable time. To improve the efficiency of restoration and facilitate theactivity...

Journal: :IJISTA 2010
Rahul Kala Anupam Shukla Ritu Tiwari

We propose the use of a hierarchical Genetic Algorithm (GA) for optimization in complex landscapes. While the slave GA tries to find local optima in the restricted fitness landscape of low complexity, the master GA tries to identify interesting regions in the entire landscape. The slave GA is a conventional GA with high convergence. The master GA is more exploratory in nature. This GA clusters ...

Journal: :journal of computational applied mechanics 0
masoud azadi moghaddam ph.d. candidate, ferdowsi university of mashhad, department of mechanical engineering, mashhad, iran farhad kolahan associate professor, ferdowsi university of mashhad, department of mechanical engineering, mashhad, iran

among the several non-conventional processes, electrical discharge machining (edm) is the most widely and successfully applied for the machining of conductive parts. in this technique, the tool has no mechanical contact with the work piece and also the hardness of work piece has no effect on the machining pace. hence, this technique could be employed to machine hard materials such as super allo...

Ali Nazemi Ashkan Hafezalkotob Seyed Hosein Mousavi

With the formation of the competitive electricity markets in the world, optimization of bidding strategies has become one of the main discussions in studies related to market designing. Market design is challenged by multiple objectives that need to be satisfied. The solution of those multi-objective problems is searched often over the combined strategy space, and thus requires the simultaneous...

Journal: :Appl. Soft Comput. 2008
Yi-Tung Kao Erwie Zahara

Heuristic optimization provides a robust and efficient approach for solving complex real-world problems. The focus of this research is on a hybrid method combining two heuristic optimization techniques, genetic algorithms (GA) and particle swarm optimization (PSO), for the global optimization of multimodal functions. Denoted as GA-PSO, this hybrid technique incorporates concepts from GA and PSO...

2008
Tawfeeq Al-Kanhal Maysam Abbod

This paper deals with the application of multi-agent system concept for optimization of dynamic uncertain process. These problems are known to have a computationally demanding objective function, which could turn to be infeasible when large problems are considered. Therefore, fast approximations to the objective function are required. This paper employs bundle of intelligent systems algorithms ...

Journal: :journal of optimization in industrial engineering 2014
amir hossein niknamfar seyed hamid reza pasandideh

vendor managed inventory is a continuous replenishment program that is designed to provide major cost saving benefits for both vendors and retailers. previous research on this area mainly included single objective optimization models where the objective is to minimize the total supply chain costs or to maximize the total supply chain benefits. this paper presents a bi-objective mathematical mod...

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