descendants_IC {ontologySimilarity}

Get information content based on number of descendants each term has

Description

Calculate information content of terms based on frequency with which it is an ancestor of other terms. Useful as a default if there is no population frequency information available as it captures the structure of the ontology.

Usage

descendants_IC(ontology)

Arguments

ontology

ontology_index object.

Value

Numeric vector of information contents named by term.