cross-validation love



from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any technique or instance of assessing how the results of a statistical analysis will generalize to an independent dataset.


Sorry, no etymologies found.


  • Careful calibration and cross-validation procedures are necessary to establish a reliable relationship between a proxy indicator and the climatic variable or variables of interest, providing a “transfer” function that allows past climatic conditions to be estimated.

    Arctic climate variability prior to 100 years BP

  • I've only skimmed the paper, but it looks like their model contains some adjustable parameters, and the phrase "cross-validation" doesn't appear anywhere in the text.

    Open Source Forecasting, Arnold Kling | EconLog | Library of Economics and Liberty

  • Their reconstruction failed critical cross-validation tests (we have publicized the R2 failure, but it fails others as well); it is not robust the presence/absence of bristlecone pines; the supposedly carefully proxies included bristlecone growth, which specialists say is contaminated by 20th century fertilization; their methodology includes a wildly biased “principal components” methodology (which is not actually a principal components method).

    Road Map and Site Rules « Climate Audit

  • A combination of cross-validation and bootstrap technique is useful for a robust validation.

    Unthreaded #17 « Climate Audit

  • It seems that there were not independent test sets used, but cross-validation indicates that there approach is possible.

    Archive 2007-01-01

  • He said that he was not involved in writing the SPM, but was lead author of a chapter in which he was again victimized by the IPCC claim that the MBH model had statistical skill in cross-validation statistics.

    It's Hard to Imagine… « Climate Audit

  • This is especially critical if the above cross-validation is sensitive to the parameter in question, and is of course dramatically aggravated with the number of such choices.

    Jean S on Rutherford et al 2005 « Climate Audit

  • In IPCC TAR, he said that their reconstruction had significant skill in cross-validation tests.

    Earth's climate crashes in 2013 « Climate Audit

  • Mann said in MBH98 that verification r and r2 tests were used as well as RE and in IPCC TAR claimed significance in cross-validation tests.

    Earth's climate crashes in 2013 « Climate Audit

  • Regarding the hybrid-20 variant, Rutherford et al., 2005 state: “As described below, cross-validation experiments motivate the choice f = 0.05 cpy 20-yr period for the split frequency in almost all cases.”

    Jean S on Rutherford et al 2005 « Climate Audit


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