Table 1.

Symbols used in this article

Symbol	Meaning
Q	Query network
T	Target network
$\mathcal{I}$	Initial reference network set
$\mathcal{F}$	Final reference network set
R i	ith reference network
ϕ ij	jth mapping of the reference R i with T
Φ i	{ϕ ij}, i.e.,set of the mappings of reference R i with T
Φ	{Φ i}, i.e., set of all mappings