The dystonias are movement disorders in which sustained muscle contractions cause twisting and repetitive movements or abnormal postures. The movements, which are involuntary and sometimes painful, may affect a single muscle; a group of muscles such as those in the arms, legs, or neck; or the entire body.
Definition of Data Clustering. Data Clustering is the classification of a data set into a group of numbers, where members of each group surround a particular number.efinition of Data Clustering. Data Clustering is the classification of a data set into a group of numbers, where members of each group surround a particular number.
Isolated Groups. Clusters are isolated groups of data points. Line plots, which are one of the ways to represent data sets, are lines with x marks placed above specific numbers to depict their frequency of occurrence in the data set. A cluster is depicted as a collection of these x marks in a small interval or data subset.