grpreg包
包含
- 组选择方法(group selection methods):
- group lasso
- group MCP
- group SCAD
- 双层变量选择(bi-level selection methods):
- group exponential lasso
- composite MCP
- group bridge
1 | install.package('grpreg') ## 安装 |
支持以下多种惩罚函数(penalities):
grLasso
:Group Lasso(Yuan & Lin, 2006)grMCP
:Group MCPgrSCAD
:Group SCADcMCP
:Composite MCP(Breheny & Huang, 2009)gel
:Group Exponential Lasso(Breheny, 2015)gBridge
:Group Bridge(Huang etal., 2009)
cv.grpreg()
- 使用交叉验证方法确定最优的 $\lambda$ 值
1 | library(grpreg) |
grpreg()
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plot.grpreg()
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