10094 IUPAC Gold Book - G-fold cross validation 10.1351/goldbook.10094 10094 current 1 Cross validation of a data set of \(N\) objects in which \(N/G\) objects are removed at each iteration of the procedure. Objects 1 to \(N/G\) are removed on the first iteration, then objects \(N/G + 1\) to \(2N/G\) after replacement of the first \(N/G\) objects, and so on. Because the perturbation of the model is larger than in leave-one-out cross validation, the prediction ability of the G-fold cross validation is less optimistic than obtained with leave-one-out cross validation. PAC, 2016, 88, 407. 'Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)' on page 420 (https://doi.org/10.1515/pac-2015-0605) https://goldbook.iupac.org/terms/view/10094/html https://goldbook.iupac.org/terms/view/10094/json https://goldbook.iupac.org/terms/view/10094/plain Citation: 'G-fold cross validation' 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.10094 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. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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. 2026-08-07T17:01:41+00:00