Value–based Group Decision on Support Bridge Selection

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Value-based group decision is very complicated since
many parties involved. There are different concern caused by
differing preferences, experiences, and background. Therefore, a
support system is required to enable each stakeholder to evaluate and
rank the solution alternatives before engaging into negotiation with
the other stakeholders. The support system is based on combination
between value-based analysis, multi criteria group decision making
based on satisfying options, and negotiation process based on
coalition formation. This paper presents the group decision and
negotiation on the selection of suitable material for a support bridge
structure involving three decision makers, who are an estate manager,
a project manager, and an engineer. There are three alternative
solutions for the material of the support bridge structure, which are
(a1) steel structure, (a2) reinforced concrete structure and (a3)
wooden structure.