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699 articles for “k-means”
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Research ArticleOpen accessEvery word in the titleA New Cooperative Algorithm Based on PSO and K-Means for Data ClusteringMehdi Neshat, Shima Farshchian Yazdi, Daneyal Yazdani, Mehdi SargolzaeiProblem statement: Data clustering has been applied in multiple fields such as machine learning, data mining, wireless sensor networks and pattern recognition. One of the most famous clustering approaches is K-means which effectively has been used in many clustering problems, but this algorithm has some drawbacks such as local optimal convergence and sensitivity to initial points. Approach: Particle Swarm Optimization … …Journal of Computer Science, Vol. 8, Issue 2 · 19 Nov 2011 · 7,967 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleRelationship of Specific Training Means and Effort Parameters in Performance Weightlifters' TrainingPotop Vladimir, M. V. UlareanuProblem statement: The researchers introduce the contents of specific training means and the reps number during the training micro-cycles along preparatory and competitive period of the performance weightlifters. Approach: This approach has lead to the organization of a study in Olympic team of weightlifting. The scientific argument is the introduction of the content of the means specific to the performance … …Journal of Social Sciences, Vol. 7, Issue 3 · 18 Jul 2011 · 7,266 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAn Efficient Unified K-Means Clustering Technique for Microarray Gene Expression DataP. Valarmathie, K. Dinakaran, T. RavichandranProblem statement: Using microarray techniques one could monitor the expressions levels of thousands of genes simultaneously. One challenge was how to derive meaningful insights into expressed data. This might be carried out by clustering techniques such as hierarchical and k-means, but most of the clustering techniques were largely heuristic in nature and are associated with some unresolved issues like how … …Journal of Computer Science, Vol. 7, Issue 7 · 28 Jun 2011 · 6,912 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Riot Problem in Three Southern Frontier Province: A Cultural Management Model by Means of PeaceNiphon Chuchouisuwan, Songkoon Chantachon, Chamnan RodhetphaiProblem statement: It was evident that a riot problem in Three Southern Frontier Provinces of Thailand resulted from many factors such as an economic factor, a social factor, a political factor, an educational factor, a religious factor, a cultural factor, a traditional factor, including a geographical location. These factors linked one another to affect systematically a riot problem in Three … …Journal of Social Sciences, Vol. 7, Issue 2 · 4 Feb 2011 · 7,349 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleRocks with Asbestos: Risk Evaluation by Means of an Abrasion TestBellopede Rossana, Clerici Carlo, Marini Paola, Zanetti GiovannaNaturally occurring asbestos and asbestiform minerals can be found in metamorphic rocks and in the soil of the alluvial plains. Problem statement: The definition of the "free-asbestos rock" and the limit to consider a rock or a soil safe is still a controversial issue. American and European laws did not present any method to define the hazard of the green … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Oct 2009 · 7,667 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInvestigating the Dynamic Thermal Behavior of Building Envelope in Summer Conditions By Means of in-Field Continuous MonitoringAnna Laura Pisello, Gloria Pignatta, Cristina Piselli et al.The effect of dynamic properties of building opaque envelope in summer conditions is investigated by means of an extensive continuous monitoring of a dedicated experimental field. Two test-buildings, a weather station and two microclimate stations positioned in each test-building represent the experimental field. The prototype buildings have been specifically designed to present the same stationary envelope properties, but different construction … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 3 · 25 Apr 2016 · 8,555 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSEGMENTATION OF ELECTROENCEPHALOGRAM SIGNALS DURING EPILEPTIC SEIZURES BY USING FUZZY C-MEANSMuhammad Abdy, Tahir AhmadElectroencephalogram (EEG) is a recording of electrical activity of the brain. It contains valuable information related to the different physiological states of the brain. A quantitative EEG analysis has been developed over the years that introduce objective measure, reflecting not only the characteristics of the brain activity itself but also giving clues concerning the underlying associated neural dynamics. In this … …American Journal of Applied Sciences, Vol. 11, Issue 10 · 11 Nov 2014 · 6,230 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMeasuring Drivers’ Effect in a Cost Model by Means of Analysis of VarianceMaria Elena NenniIn this study the author goes through with the analysis of a cost model developed for Integrated Logistic Support (ILS) activities. By means of ANOVA the evaluation of impact and interaction among cost drivers is done. The predominant importance of organizational factors compared to technical ones is definitely demonstrated. Moreover the paper provides researcher and practitioners with useful information to … …American Journal of Applied Sciences, Vol. 10, Issue 12 · 24 Oct 2013 · 6,448 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOn Cesáro means for Fox-Wright functionsMaslina Darus, Rabha W. IbrahimThe polynomial approximants which retain the zero free property of a given analytic function involving fox-wright function in the unit disk U: = {z: |z|<1} is found. The convolution methods of a geometric function that the Cesáro means of order μ retains the zero free property of the derivatives of bounded convex functions in the unit disk are used. Other … …Journal of Mathematics and Statistics, Vol. 4, Issue 3 · 30 Sep 2008 · 6,906 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAmeliorate Fuzzy C-Means: An Ameliorate Fuzzy C-Means Clustering Algorithm for CT-Lung Image SegmentationJ. Bridget Nirmala, S. GowriEffective and efficient image segmentation acts as a preliminary stage for the computer-aided diagnosis of medical images. For image segmentation, many FCM-based clustering techniques have been proposed. Regrettably, the existing FCM technique does not generate accurate and standardized segmentation results. This is due to the noise present in the image as well as the random initialization of membership values for … …American Journal of Applied Sciences, Vol. 10, Issue 11 · 1 Oct 2013 · 6,819 accessesView PDFCite