add_wildcard: Adds a wildcard for every missing parent
Description
Adds a wildcard for every missing parent
Usage
add_wildcard(node, statement, parents, missing_parents)
Arguments
node
A character string. The quoted name of a node.
statement
A character string. A quoted causal statement.
parents
A vector of characters. The node's parents
missing_parents
A vector of characters. The node's missing parents
Value
A causal query expression with all parents nodes set to either 0, 1 or wildcard '.'