Clustering attempts to discover significant groups present in a data set. It is an unsupervised process. It is difficult to define when a clustering result is acceptable. Thus, several clustering validity indices are developed to evaluate the quality of clustering algorithms results. In this paper, we propose to improve the quality of a clustering algorithm called ”CLUSTER” by using a validity ...

Recently, clustering algorithms combined conventional methods and artificial intelligence. FSCSOM is designed to handle the problem of SOM, such as defining the number of clusters and initial value of neuron weights. FSC find the number of clusters and the cluster centers which become the parameter of SOM. FSC-SOM is expected to improve the quality of FSC since the determination of the cluster ...

A new clustering accuracy measure is proposed to determine the unknown number of clusters and assess quality a data set given in any dimensional space. Our validity index applies classical nonparametric univariate kernel density estimation method interpoint distances computed between members data. Being based on distances, it free curse dimensionality therefore efficiently computable for high-d...

This paper explores the link between student achievement and student learning styles in a college microeconomics course, based on the Dunn and Dunn model of learning styles. The Productivity Environmental Survey (PEPS) is utilized to measure learning style preferences for twenty elements. Factor analysis is applied to reduce the multidimensional preferences to a smaller set of common factors th...

DaviD W. NeWtoN, B.S.Pharm., Ph.D., FaPha, is Professor and Chairman, Department of Biopharmaceutical Sciences, Bernard J. Dunn School of Pharmacy, Shenandoah University, Winchester, VA. DaviD F. DriScoll, B.S.Pharm., Ph.D., is Senior Researcher, Department of Medicine, Beth Israel Deaconess Medical Center, and Assistant Professor of Medicine, Harvard Medical School, Boston, MA. Address corresp...

BACKGROUND Acromioclavicular injuries are common in sports medicine. Surgical intervention is generally advocated for chronic instability of Rockwood grade III and more severe injuries. Various methods of coracoclavicular ligament reconstruction and augmentation have been described. The objective of this study is to compare the biomechanical properties of a novel palmaris-longus tendon reconstr...