نتایج جستجو برای: Heuristic algorithm

تعداد نتایج: 782234  

Journal: :journal of algorithms and computation 0
s. jabari university of tehran, department of algorithms and computation. dara moazzami university of tehran, college of engineering, faculty of engineering science a. ghodousian university of tehran, college of engineering, faculty of engineering science

in this paper, we study the generalized bin covering problem. for this problem an exact algorithm is introduced which can nd optimal solution for small scale instances. to nd a solution near optimal for large scale instances, a heuristic algorithm has been proposed. by computational experiments, the eciency of the heuristic algorithm is assessed.

Journal: :تحقیقات مالی 0
مرتضی الهی دانشجوی کارشناسی ارشد مهندسی صنایع، دانشگاه یزد، یزد، ایران محسن یوسفی دانشجوی کارشناسی ارشد مهندسی صنایع، دانشگاه یزد، یزد، ایران یحیی زارع مهرجردی دانشیار گروه مهندسی صنایع دانشگاه یزد، یزد، ایران

this paper presents a new meta-heuristic solution to find the efficient frontier using the mean-variance approach. portfolio optimization problem is a quadratic programming model and, changes to np-hard if the number of assets and constraints has increased, and it cannot be solved using common mathematical methods in a reasonable time. therefore, a heuristic or meta-heuristic algorithm should b...

Journal: :journal of advances in computer engineering and technology 2015
behrouz sadeghi vahid khatibi bardsiri monireh esfandiari farzad hosseinzadeh

one of the most important and valuable goal of software development life cycle is software cost estimation or sce. during the recent years, sce has attracted the attention of researchers due to huge amount of software project requests. there have been proposed so many models using heuristic and meta-heuristic algorithms to do machine learning process for sce. cocomo81 is one of the most popular...

Journal: :journal of optimization in industrial engineering 2011
mohamad mirzazadeh gholam hasan shirdel behrooz masoumi

assigning facilities to locations is one of the important problems, which significantly is influence in transportation cost reduction. in this study, we solve quadratic assignment problem (qap), using a meta-heuristic algorithm with deterministic tasks and equality in facilities and location number. it should be noted that any facility must be assign to only one location. in this paper, first o...

Journal: :international journal of communications and information technology 2011
e. valian s. mohanna s. tavakoli

the cuckoo search algorithm is a recently developedmeta-heuristic optimization algorithm, which is suitable forsolving optimization problems. to enhance the accuracy andconvergence rate of this algorithm, an improved cuckoo searchalgorithm is proposed in this paper. normally, the parametersof the cuckoo search are kept constant. this may lead todecreasing the efficiency of the algorithm. to cop...

Journal: :international journal of optimaization in civil engineering 0
s. asil gharebaghi m. ardalan asl

a new meta-heuristic method, based on neuronal communication (nc), is introduced in this article. the neuronal communication illustrates how data is exchanged between neurons in neural system. actually, this pattern works efficiently in the nature. the present paper shows it is the same to find the global minimum. in addition, since few numbers of neurons participate in each step of the method,...

Set covering problem has many applications such as emergency systems, retailers’ facilities, hospitals, radar devices, and military logistics, and it is considered as Np-Hard problems. The goal of set covering problem is to find a subset such that :::::::::union::::::::: of the subset members covered the whole set. In this paper, we present a new heuristic algorithm to solve the set covering pr...

M. Danesh, M. Jalilkhani,

This study is devoted to discrete sizing optimization of truss structures employing an efficient discrete evolutionary meta-heuristic algorithm which uses the Newton gradient-based method as its updating scheme and it is named here as Newton Meta-heuristic Algorithm (NMA). In order to enable the NMA population-based meta-heuristic to effectively explore the discrete design space, a term contain...

In this paper, we study the Generalized Bin Covering problem. For this problem an exact algorithm is introduced which can nd optimal solution for small scale instances. To nd a solution near optimal for large scale instances, a heuristic algorithm has been proposed. By computational experiments, the eciency of the heuristic algorithm is assessed.

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