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Mathematical models of water distribution systems serve as tools to represent the real systems for many different purposes. Calibration is the process of fine tuning the model parameters so that the real system is well-represented. Chlorine wall decay coefficients vary between pipes and must be determined indirectly from field measured concentration data. A general calibration model under multi-mode...
Estimation of Distribution Algorithm (EDA) is a kind of new evolutionary algorithm which updates and samples from probabilistic model in evolutionary computation. Recently it is used to solve multi-objective problems. The key is how to construct probability model suitable for real distribution and how to keep diversity of solutions. In this paper a new multi-objective evolutionary of distribution...
In order to reduce the energy consumption in the process of production, obtain the better rolling rules, a fast and efficient intelligent optimization System for Cold Continuous Rolling Rules is designed according to the actual situation of the production line in An Yang steel rolling plant. This system use the MAGA and PSO to optimize the rolling rules on the foundation of experience method, and...
In this paper, a hybrid integer programming model is proposed for flexible job-shop scheduling problem(FJSP). Using crossover operator and mutation operator, the hybrid particle swarm optimization(HPSO) algorithm with basic particle swarm optimization(BPSO) algorithm and genetic algorithm(GA) is employed to solve this problem. Compared with BPSO algorithm, HPSO algorithm has a potential to reach a...
Basing on the simulation of a social metaphor instead of the survival of the fittest individual paradigm, particle swarm optimization is a population-based swarm intelligence algorithm. Inspired by the conventional particle swarm method, ecological theory, and biological theory, this work proposes a novel ecological-biological-behaved particle swarm optimization (EBB-PSO) algorithm using logical growth...
SPICE model is one of the key technical connections between the integrated-circuit technology community and the design community. Design community requires accurate SPICE model parameters so as to make the difference between design spec and practical spec minimized as possible. To get accurate model parameters, optimization algorithms are used for parameter extraction. A parallel hybrid evolutionary...
Supplier selection is a critical issue in information systems(IS) outsourcing decision, and it is a difficult problem which includes both tangible and intangible factors. Besides cost and benefit analysis, some intangible factors such as risk also need to be considered. In this paper, a multi-objective programming model is proposed to help outsourcers to select IS providers. This model considers cost...
Modern engineering systems such as telecommunication systems, transmission lines, and chemical reactors are complex in nature. Their detailed mathematical modeling leads to high order dynamic systems. For simplicity of simulation, interpretation, and control of such processes it is desirable to represent the dynamics of these high order systems by lower order models. However, most of the available...
The problem of optimal channel assignment has become increasingly important because of available frequency spectrum and increasing demand for cellular communication services. This has been shown to be an Np complete optimization problem. Many heuristic approaches including neural network, simulated annealing and genetic algorithm have been used to solve it. In this paper we propose a novel and efficient...
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