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Clustering

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.
• Data clustering - a technique for data analysis by partitioning a data set into subsets whose elements share common traits.
  • Semantic clustering - clustering of objects based on a semantic proximity.
• In demographics, 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. 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.