Klaus Krippendorff (March 21, 1932 – October 10, 2022) was a communication scholar, social science methodologist, and cyberneticist.
and was the Gregory Bateson professor for Cybernetics, Language, and Culture at the University of Pennsylvania's Annenberg School for Communication.
He wrote an influential textbook on content analysis and is the creator of the widely used and eponymous measure of interrater reliability, Krippendorff's alpha.
Also in 2001, he received the ICA Fellows Book Award for his influential text Content Analysis, An Introduction to Its Methodology.
[8] Krippendorff has published widely on cybernetics and systems theory, methodology in the social sciences, human communication, conversation, and discourse.