ScreeningStep {ScreenClean}

GS-step of the graphlet screening

Description

ScreeningStep performs the cleaning step of the graphlet screening

Usage

ScreeningStep(y.tilde, gram, cg.all, nm, v, r, q0 = 0.1, scale = 1)

Arguments

y.tilde

X'y, where X and y are the predictor matrix and the reponse vector.

gram

the regularized gram matrix

cg.all

a list whose kth element is a matrix of k columns. Its rows contain all the connected subgraph with k nodes.

nm

the maximal subgraph invesgated in the screening step

v

an essential tuning parameter of graphlet screening, tied to the sparse level

r

an essential tuning parameter of graphlet screening, tied to the signal strength

q0

the minimal screening parameter

scale

q(D,F)=q^{max}(D,F)*scale, default is scale=1

Value

survivor

A logical vector, where TRUE means retained as a protential signal.

Note

When nm=1, it is just univariate threholding, and thurs the screening step of UPS.

See Also

CleaningStep, IterGS

Examples

##See the demoGS.r