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arXiv 1503.02817math.STcs.ITmath.ITstat.MLstat.TH
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高维可加模型的Minimax最优估计率:泛相变

Minimax Optimal Rates of Estimation in High Dimensional Additive Models: Universal Phase Transition

Ming Yuan, Ding-Xuan Zhou

摘要:

在高维可加模型近似稀疏的条件下,建立了估计的极小极大最优收敛速度。我们的结果揭示了一个有趣的相变行为普遍这类高维问题。在{ \it稀疏区域}中,当分量足够平滑或维数足够大时,最佳速率与高维线性回归的速率相同,因此不存在接受非参数模型的额外成本。否则,在所谓的{ \it平滑区域}中,速率与用于估计单变量函数的最优速率一致,因此它们不受“维数灾难”的影响。

英文摘要:

We establish minimax optimal rates of convergence for estimation in a high dimensional additive model assuming that it is approximately sparse. Our results reveal an interesting phase transition behavior universal to this class of high dimensional problems. In the {\it sparse regime} when the components are sufficiently smooth or the dimensionality is sufficiently large, the optimal rates are identical to those for high dimensional linear regression, and therefore there is no additional cost to entertain a nonparametric model. Otherwise, in the so-called {\it smooth regime}, the rates coincide with the optimal rates for estimating a univariate function, and therefore they are immune to the "curse of dimensionality".

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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