نتایج جستجو برای: modified harmony search

تعداد نتایج: 545188  

2015
M. Shafaati H. Mojallali

Due to the fact that the error surface of adaptive infinite impulse response (IIR) systems is generally nonlinear and multimodal, the conventional derivative based techniques fail when used in adaptive identification of such systems. In this case, global optimization techniques are required in order to avoid the local minima. Harmony search (HS), a musical inspired metaheuristic, is a recently ...

In this paper, power distribution planning (PDP) considering distributed generators (DGs) is investigated as a dynamic multi-objective optimization problem. Moreover, Monte Carlo simulation (MCS) is applied to handle the uncertainty in electricity price and load demand. In the proposed model, investment and operation costs, losses and purchased power from the main grid are incorporated in the f...

S. Shojaee, S. Talatahari, V. Goodarzimehr,

In this work, a new hybrid Symbiotic Organisms Search (SOS) algorithm introduced to design and optimize spatial and planar structures under structural constraints. The SOS algorithm is inspired by the interactive behavior between organisms to propagate in nature. But one of the disadvantages of the SOS algorithm is that due to its vast search space and a large number of organisms, it may trap i...

2013
Epaminondas Sidiropoulos

The combined optimization problem of resource production and allocation is considered. The spatial character of the problem is emphasized and cellular modeling is introduced. First a new enhanced harmony search algorithm is applied combined with cellular concepts. Then another new approach is presented involving a cellular automaton combined with harmony search. This second approach renders sol...

Journal: :journal of advances in computer research 0
hasan nasiri soloklo department of electrical engineering, firoozkooh branch, islamic azad university, firoozkooh, iran malihe maghfoori farsangi electrical engineering department, shahid bahonar university of kerman, kerman, iran

in this paper, a new alternative method for order reduction of high order systems is presented based on optimization of multi objective fitness function by using harmony search algorithm. at first, step response of full order system is obtained as a vector, then, a suitable fixed structure considered for model order reduction which order of original system is bigger than fixed structure model. ...

Journal: :iranian journal of science and technology transactions of electrical engineering 2015
h. nasiri soloklo r. hajmohammadi m. m. farsangi

in this paper, a new method is investigated for model order reduction of high order systems based on moment matching technique. in this method, at first, full order model is expanded by legendre wavelet function which is included in orthogonal functions. a suitable fixed structure model is considered as reduced order model whose parameters are unknown. these unknown parameters are determined us...

Journal: :journal of advances in computer engineering and technology 2015
zahra kamaei hamidreza bakhshi behrooz masoumi

wireless sensor networks are the new generation of networks that typically are formed great numbers of nodes and the communications of these nodes are done as wireless. the main goal of these networks is collecting data from neighboring environment of network sensors. since the sensor nodes are battery operated and there is no possibility of charging or replacing the batteries, the lifetime of ...

Journal: :civil engineering infrastructures journal 0
naser kazemi elaki m.sc. of structural engineering, university of sistan and baluchestan naser shabakhty phd of civil engineering department of civil engineering university of sistan and baluchetsan mostafa abbasi kia msc of computer science. department of mathematics, university of lorestan soroosh sanayee moghaddam m.sc. of hydrolic structures, university of sistan and baluchestan

in this research, a two-phase algorithm based on the artificial neural network (ann) and a harmony search (hs) algorithm has been developed with the aim of assessing the reliability of structures with implicit limit state functions. the proposed method involves the generation of datasets to be used specifically for training by finite element analysis, to establish an ann model using a proven an...

2011
Oliver Weede Stefan Zimmermann Björn Hein Heinz Wörn

Seed Throwing Optimization is an easy to implement probabilistic metaheuristic for multimodal function optimization with roots in hill climbing and the evolutionary computation like technique Harmony Search. It is a randomized Gradient Ascent with multiple initial states and the possibility to limit exploration to only paths which have shown potential. In this paper, the speed of convergence of...

2015
Xiao Zhi Gao V. Govindasamy He Xu X. Wang Kai Zenger

The Harmony Search (HS) method is an emerging metaheuristic optimization algorithm, which has been employed to cope with numerous challenging tasks during the past decade. In this paper, the essential theory and applications of the HS algorithm are first described and reviewed. Several typical variants of the original HS are next briefly explained. As an example of case study, a modified HS met...

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