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Knowledge Organization (KO) is published by IMR Press from Volume 52 Issue 1 (2025). Previous articles were published by another publisher under the CC-BY licence, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement.

Abstract

This article first focuses on the emergence of a scholarly discourse on periodization. That discourse includes historians' efforts to diversify criteria for individuating periods, and philosophers' analyses of periodization as a form of historiographical theorizing. Next the article turns to the dynamic interaction between scholarly periodization and the broader institutionalization of periodizations. This is followed by a brief review of arguments against periodization. The article ends with a look at how periodizations are treated in knowledge organization systems (KOS).