Title: Bayesian probability
Long Title: IUPAC Gold Book - Bayesian probability
DOI: 10.1351/goldbook.14463
Status: current

Definition
Subjective or objective concept of probability as a "measure of the state of knowledge".

Note
Assessment of probability in Bayesian theory can be approached as, e.g., odds for one or the other result of a stochastic outcome. Modern machine learning methods are frequently based on Bayesian theory.

Source
- PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 843 (https://doi.org/10.1351/PAC-REC-08-07-09)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/14463/html
- json: https://goldbook.iupac.org/terms/view/14463/json
- xml: https://goldbook.iupac.org/terms/view/14463/xml

Citation: Citation: 'Bayesian probability' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14463
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Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.
Accessed: 2026-04-18T15:47:16+00:00