Finding a good regularization parameter for Tikhonov regularization problems is a though yet often asked question. One approach is to use leave-one-out cross-validation scores to indicate the ...
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May 10, 2016 · (2016). Generalized spatial regression with differential regularization. Journal of Statistical Computation and Simulation: Vol. 86, Includes the Special Issue: Selected Papers from the GRASPA 2015 Conference, 15–16 June 2015, Bari, Italy, pp. 2497-2518.
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switch to gamm within mgcv. I know bam is designed for large data but ... a little bit of regularization and (2) model matrix sparsity -- but doing this within gamm4 ...
reg_gamma: The regularization strength of the spline algorithm. default=0.1. For spline="smoothing_spline_bigsplines", it ranges from 0 to 1, and the suggested tuning grid is 1e-9 to 1e-1; and it can be set to "GCV". For spline="smoothing_spline_mgcv", it ranges from 0 to :math:`+\infty`, and it can be set to "GCV".
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R package grpreg. Efficient algorithms for fitting the regularization path of linear or logistic regression models with grouped penalties. This includes group selection methods such as group lasso, group MCP, and group SCAD as well as bi-level selection methods such as the group exponential lasso, the composite MCP, and the group bridge.
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Aug 30, 2012 · Multivariate nonparametric smoothers, such as kernel based smoothers and thin plate splines smoothers, are adversely impacted by the sparseness of data in high dimension, also known as the curse of dimensionality. Adaptive smoothers, that can exploit the underlying smoothness of the regression function, may partially mitigate this effect. This paper presents a comparative simulation study of a ...