  This paper proposes a new consensus model in participatory decision making.
The model employs advice centrality approach by electing a leader and
recommender named as Supra Decision Maker (SDM). A SDM has a role as a decision
bench-marker to other decision makers in evaluating each alternative with
respect to given criteria. The weighting value for each alternative can be
obtained by considering consensus level and preferences' distances between SDM
and other Decision Makers. A social function using Social Judgment Scheme (SJS)
concept is employed when a decision does not achieve the required consensus
level. A simple example is presented here to illustrate our model.
  Keywords: Consensus, Group decision making, Centrality, Supra Decision Maker,
Social Judgment Scheme
