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Estimation and Model Selection for Nonparametric Function-on-Function Regression

Regression models with a functional response and functional covariate have received significant attention recently. While various nonparametric and semiparametric models have been developed, there is an urgent need for model selection and diagnostic methods. In this article, we develop a unified framework for estimation and model selection in nonparametric function-on-function regression. We propose a general nonparametric functional regression model with the model space constructed through smoothing spline analysis of variance (SS ANOVA). The proposed model reduces to some of the existing models when selected components in the SS ANOVA decomposition are eliminated. We propose new estimation procedures under either L1 or L2 penalty and show that the combination of the SS ANOVA decomposition and L1 penalty provides powerful tools for model selection and diagnostics. We establish consistency and convergence rates for estimates of the regression function and each component in its decomposition under both the L1 and L2 penalties. Simulation studies and real examples show that the proposed methods perform well. Technical details and additional simulation results are available in online supplementary materials.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF COMPUTATIONAL AND GRAPHICAL STATISTICS; Vol.31 No.3 September 2022

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 835-845

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

REPRODUCING KERNEL HILBERT SPACE
REGULARIZATION
CONVERGENCE RATE
SMOOTHING SPLINE ANOVA

Info Detail Spesifik

ttps://doi.org/10.1080/10618600.2022.2037434

Pernyataan Tanggungjawab

Zhanfeng Wang, Hao Dong, Ping Ma, Yuedong Wang

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