on during restoration. Because of different backgrounds and positions
of decision makers, it is hard to reach a consensus on the
most applicable restoration plan. Different restoration schemes
should be produced for evaluation and selection. And for each step
of restoration, many factors will influence restoration speed and
system security. Therefore every step of backbone-network recon-
figuration pertains to a typical MADM problem.
In this section, the theory foundation of group decision support
system is introduced. Section ‘Determination of restoration
schemes’ presents a three-stage restoration strategy and path
searching method to develop candidate restoration schemes.
Section ‘Evaluation of restoration schemes’ discusses the theories
of MADM and group decision-making for selecting a more applicable
restoration scheme.