Words similar to cross-validation
Example sentences for: cross-validation
How can you use “cross-validation” in a sentence? Here are some example sentences to help you improve your vocabulary:
Through permutation testing,we determined an empirical cutoff for the cross-validation consistencythat would not be expected by chance.
In such a case, the selection of genes should be treated with caution and cross-validation by independent methods should be applied if hypotheses are to be derived from the selected genes.
An approach of Wall et al . [ 22] tries to combine PCA-based gene selection with a confidence measure using leave-one-out cross-validation.
In a typical cross-validation analysis (i) the data are randomly split into ten samples each with 10% of the data, (ii) one of the 10% samples is deleted, (iii) the statistic is computed by applying the classification rule recalculated from the remaining 90% of the sample to the deleted 10% sample and (iv) an average is taken of the statistic over all ten 10% samples [ 22 ] . Although one could use a different fraction than 10%, ROC computation it is not possible with the most extreme version of cross-validation that involves leaving out one subject at a time.
With bootstrapping, (i) the entire data set is resampled with replacement many times, (ii) on each resampling the statistics is computed, and (iii) the statistics from each resampling are combined in a special way [ 22 ] . In a recent study comparing these adjustments with other types of statistics in a different setting, Steyerberg et al [ 22 ] found that the split-sample approach tended to underestimate performance, cross-validation performed poorly on some statistics that were not normally distributed, and bootstrapping performed best overall.
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