نتایج جستجو برای: k_means algorithm

تعداد نتایج: 754004  

Journal: :journal of advances in computer engineering and technology 2015
masoud geravanchizadeh sina ghalami osgouei

in this paper, we propose a novel algorithm to enhance the noisy speech in the framework of dual-channel speech enhancement. the new method is a hybrid optimization algorithm, which employs the  combination of  the  conventional θ-pso and the shuffled sub-swarms particle optimization (sspso) technique. it is known that the θ-pso algorithm has better optimization performance than standard pso al...

Journal: :journal of biomedical physics and engineering 0
kh rezaee 1hakim sabzevari university of sabzevar, department of electrical and computer engineering, sabzevar, iranسازمان های دیگر: 2sabzevar university of medical science, department of medical physics and biomedical engineering, new technologies research center,

background: epilepsy is a severe disorder of the central nervous system that predisposes  the person to recurrent seizures. fifty million people worldwide suffer from  epilepsy; after alzheimer's and stroke, it is the third widespread nervous disorder. objective: in this paper, an algorithm to detect the onset of epileptic seizures  based on the analysis of brain electrical signals (eeg) has be...

Journal: :journal of advances in computer engineering and technology 2015
mehran yazdi narjes pourjafarian mehrnaz fani elahe taherianfard

template matching is a widely used technique in many of image processing and machine vision applications. in this paper we propose a new as well as a fast and reliable template matching algorithm which is invariant to rotation, scale, translation and brightness (rstb) changes. for this purpose, we adopt the idea of ring projection transform (rpt) of image. in the proposed algorithm, two novel s...

Journal: :journal of electrical and computer engineering innovations 0
rohollah omidvar young researchers and elite club, yasooj branch, islamic azad university, yasooj, iran hamid parvin young researchers and elite club, nourabad mamasani branch, islamic azad university, nourabad mamasani, iran amin eskandari sama technical and vocational training college, azad university of shiraz, shiraz, iran

assigning a set of objects to groups such that objects in one group or cluster are more similar to each other than the other clusters’ objects is the main task of clustering analysis. sspco optimization algorithm is anew optimization algorithm that is inspired by the behavior of a type of bird called see-see partridge. one of the things that smart algorithms are applied to solve is the problem ...

Journal: :مدیریت فناوری اطلاعات 0
حیدر جعفرزاده کارشناس‎ارشد مهندسی کامپیوتر، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات ایلام، ایلام، ایران چمران عسگری کارشناس‎ارشد مهندسی کامپیوتر، گروه مهندسی کامپیوتر، دانشگاه پیام نور، ایران امیر امیری کارشناس‎ارشد مهندسی کامپیوتر، دانشگاه آزاد اسلامی ملایر، ملایر، ایران

apriori algorithm is the most popular algorithm in association rules mining. one of the problems the apriori algorithm is that the user must specify a minimum support threshold. consider that a user wants to implement the apriori algorithm on a database with millions of transactions; users will not have the necessary knowledge about all the transactions in the database and therefore cannot dete...

Journal: :International Journal of Computer Applications 2016

Journal: :مهندسی بیوسیستم ایران 0
سعید مینایی دانشیار گروه مکانیک ماشین‏های کشاورزی، دانشگاه تربیت مدرس علیرضا مهدویان دانشجوی دکتری گروه مکانیک ماشین‏های کشاورزی، دانشگاه تربیت مدرس احمد بناکار استادیار گروه مکانیک ماشین‏های کشاورزی، دانشگاه تربیت مدرس

one of the best applications of automated navigation systems is the use of automatic steering systems in agricultural vehicles. in this research, a machine vision algorithm was designed, based on image acquisition from a camera mounted on front of acombine harvester cab fordetection of its forward path. after filtration and optimization of the image, hough transform was utilized for extracting ...

Journal: :international journal of industrial engineering and productional research- 0
parviz fattahi hamedan bahman ismailnezhad hamedan

in this paper, a stochastic cell formation problem is studied using queuing theory framework and considering reliability. since cell formation problem is np-hard, two algorithms based on genetic and modified particle swarm optimization (mpso) algorithms are developed to solve the problem. for generating initial solutions in these algorithms, a new heuristic method is developed, which always cre...

Journal: :journal of computer and robotics 0
sahifeh poor ramezani kalashami faculty of engineering, department of artificial intelligence, mashhad branch, islamic azad university, mashhad, iran seyyed javad seyyed mahdavi chabok faculty of engineering, department of artificial intelligence, mashhad branch, islamic azad university, mashhad, iran

clustering is one of the known techniques in the field of data mining where data with similar properties is within the set of categories. k-means algorithm is one the simplest clustering algorithms which have disadvantages sensitive to initial values of the clusters and converging to the local optimum. in recent years, several algorithms are provided based on evolutionary algorithms for cluster...

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