{"term":{"id":"10084","title":"autoregression","longtitle":"IUPAC Gold Book - autoregression","doi":"10.1351\/goldbook.10084","code":"10084","status":"current","definitions":[{"id":1,"text":"Stochastic process in which future values are estimated based on a weighted sum of past values.","notes":{"1":"A process called AR(1) is a first order process, meaning that the current value is based on the immediately preceding value. An AR(2) process has the current value based on the previous two values."},"sources":["PAC, 2016, 88, 407. 'Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)' on page 417 (https:\/\/doi.org\/10.1515\/pac-2015-0605)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/10084\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/10084\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/10084\/plain"},"citation":"Citation: 'autoregression' 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.10084","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","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":"2026-04-18T22:22:32+00:00"}}