Table 4.

Parameters used to limit the number of features

Parameter	Domain	Description
k	${\mathbb{N}}^{+}$	Maximum length of paths and path patterns
t	$\mathbb{N}\cup \left\{-,1\right\}$	Maximum depth of generalization
deg	$\mathbb{N}\cup \left\{-,1\right\}$	Maximum node degree to allow expansion
$s_{\text{min}}$	$\mathbb{N}$	Minimum support for features
$s_{\text{max}}$	$\mathbb{N}$	Maximum support for features
Undirected	$\mathbb{B}$	Consider the graph undirected or directed
$b_{\text{predicates}}$	List of URIs	Blacklist of predicates not to traverse
$b_{\text{exp-types}}$	List of URIs	Blacklist of types of entities not to traverse
$b_{\text{gen-types}}$	List of URIs	Blacklist of types not to traverse in generalization
m	$\{\mathtt{no}-\mathtt{check},\mathtt{p},\mathtt{g},\mathtt{m},\mathtt{pg},\mathtt{pgm}\}$	Domain-dependent filter for features with at least a pathway (p), a gene (g) or a MeSH class (m)

Each parameter is associated with a domain for its value