unweighted pair group method with arithmetic mean

synonym: average linkage
initialism: UPGMA
https://doi.org/10.1351/goldbook.10147

Linkage criterion in hierarchical clustering in which the distance between two clusters is the average of all distances between pairs of objects.

Source:
PAC, 2016, 88, 407. (Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)) on page 433 [Terms] [Paper]
Citation: 'unweighted pair group method with arithmetic mean' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.10147 RIS BibTex EndNote
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