is.unknown {dagR}

Check if a DAG node presents an unknown variable.

Description

Another helper function, internally used by brute.search. It checks whether the node specified is of type=2 or is named 'unknown'.

Usage

is.unknown(x, dag)

Arguments

x

The node of interest.

dag

The DAG to be evaluated.

Value

TRUE if unknown (acc. to type or name), FALSE otherwise.

Author(s)

Lutz P Breitling <[e-mail]>

See Also

brute.search