Improved Outcome Prediction Across Data Sources Through Robust Parameter Tuning
Improved Outcome Prediction Across Data Sources Through Robust Parameter Tuning
复制标题
通过稳健的参数调整改进跨数据源的结果预测
DOI:
10.1007/s00357-020-09368-z
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发表时间:
2021
影响因子:
2
通讯作者:
R. Hornung
中科院分区:
文献类型:
--
作者:
N. Ellenbach;A.-L. Boulesteix;B. Bischl;K. Unger;R. Hornung
In many application areas, prediction rules trained based on high-dimensional data are subsequently applied to make predictions for observations from other sources, but they do not always perform well in this setting. This is because data sets from different sources can feature (slightly) differing distributions, even if they come from similar populations. In the context of high-dimensional data and beyond, most prediction methods involve one or several tuning parameters. Their values are commonly chosen by maximizing the cross-validated prediction performance on the training data. This procedure, however, implicitly presumes that the data to which the prediction rule will be ultimately applied, follow the same distribution as the training data. If this is not the case, less complex prediction rules that slightly underfit the training data may be preferable. Indeed, a tuning parameter does not only control the degree of adjustment of a prediction rule to the training data, but also, more generally, the degree of adjustment to thedistribution ofthe training data. On the basis of this idea, in this paper we compare various approaches including new procedures for choosing tuning parameter values that lead to better generalizing prediction rules than those obtained based on cross-validation. Most of these approaches use an external validation data set. In our extensive comparison study based on a large collection of 15 transcriptomic data sets, tuning on external data and robust tuning with a tuned robustness parameter are the two approaches leading to better generalizing prediction rules.
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DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
S. Gottlieb;D. Gottlieb;Chi
通讯作者:
Chi
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
Vladimir;VapnikAT
通讯作者:
VapnikAT
DOI:
10.1093/bioinformatics/btu279
发表时间:
2014-06-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Bernau C;Riester M;Boulesteix AL;Parmigiani G;Huttenhower C;Waldron L;Trippa L
通讯作者:
Trippa L
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
A. Scherer
通讯作者:
A. Scherer
影响因子:
5.8
作者:
Friedman, Jerome;Hastie, Trevor;Tibshirani, Rob
通讯作者:
Tibshirani, Rob