Clustering

Clustering can refer to the following:

In computing:
 * Computer cluster, the technique of linking many computers together to act like a single computer
 * Data cluster, an allocation of contiguous storage in databases and file systems
 * Cluster analysis, the statistical task of grouping a set of objects in such a way that objects in the same group are placed closer together (such as the k-means clustering)
 * In hash tables, the mapping of keys to nearby slots

In economics:
 * Business cluster, a geographic concentration of interconnected businesses, suppliers, and associated institutions in a particular field

In graph theory:
 * The formation of clusters of linked nodes in a network, measured by the clustering coefficient