Clustering can refer to

• Computer clustering - the connection of many low-cost computers to be used as one larger computer.
• In computer science, the undesirable, contiguous grouping of elements in a hash table. Computer science (or computing science) is the study and the Science of the theoretical foundations of Information and Computation and their In Computer science, a hash table, or a hash map, is a Data structure that associates keys with values.
• Data clustering - a technique for data analysis by partitioning a data set into subsets whose elements share common traits. Clustering is the classification of objects into different groups or more precisely the partitioning of a Data set into Subsets (clusters
  • Semantic clustering - clustering of objects based on a semantic proximity.
• In demographics, the gathering of various populations based on ethnicity, economics or religion. In Demographics, clustering refers to the gathering of various Populations based on Ethnicity, Economics or Religion.
• In writing, a "pre-writing" technique to organize ideas using "ball-and-stick" diagrams similar to mind maps. A mind map is a Diagram used to represent Words, Ideas tasks or other items linked to and arranged radially around a central key word or idea The term was popularized by Gabriele Rico's 1983 book Writing the Natural Way: Turn the Task of Writing Into the Joy of Writing.
• In physics - formation of clusters: regions of enhanced concentration of particles of matter. Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion.

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