f.markov_pillow: Get the Markov pillow of a vertex in a graph.

In flexCausal: Causal Effect Estimation via Doubly Robust One-Step Estimators and TMLE in Graphical Models with Unmeasured Variables

Get the Markov pillow of a vertex in a graph.

Description

Function to get the Markov pillow of a vertex in a graph object. Markov pillow of a vertex Vi is the subset of the Markov blanket of Vi that proceed Vi in the topological ordering of the graph. Mp= ⁠{{Vj in union(district(Vi), parents(district(Vi))): Vj proceed Vi}}⁠.

Usage

f.markov_pillow(graph, node, treatment = NULL)

Arguments

graph	A graph object generated by the make.graph() function.
node	A character string of a vertex for which to extract Markov pillow.
treatment	A character string specifying the treatment variable in the graph.

Value

A vector of vertices that is in the Markov pillow of the given vertex.

Examples

graph <- make.graph(vertices=c('A','M','L','Y','X'),
bi_edges=list(c('A','Y')),
di_edges=list(c('X','A'), c('X','M'), c('X','L'),
c('X','Y'), c('M','Y'), c('A','M'), c('A','L'), c('M','L'), c('L','Y')))
f.markov_pillow(graph, 'A')

flexCausal documentation built on March 29, 2026, 5:08 p.m.