Development of Copeland Score Methods for Determine Group Decisions

Voting method requires to determine group decision of decision by each decision maker in group. Determination of decisions by group of decision maker requires voting methods. Copeland score is one of voting method that has been developed by previous researchers. This method does not accommodate the weight of the expertise and interests of each decision maker. This paper proposed the voting method using Copeland score with added weighting. The method has developed of considering the weight of the expertise and interests of the decision maker. The method accordance with the problems encountered of group decision making . Expertise and interests of decision makers are given weight based on their expertises of decision maker contribution of the problems faced by the group to determine the decision. Decision making is the selection process of various alternative actions that might be chosen through a specific mechanism to make the best decision. The decision maker is done in order to achieve certain goals or objectives for solving problems. Organizational leaders rarely can solve the problem alone. Committees, working teams, project teams and task forces were formed in many organizations is approach to problem solving by group. GDSS is a computer-based interactive system to facilitate the achievement solution of problem by a group of decision makers. That is consistent with the statement of Turban (2005): A group decision support system (GDSS) is as interactive components of the facilities based system that solution of semi structured or unstructured problems by a group of decision makers in unstructured nature. GDSS was developed to address challenges to the quality and effectiveness of decision-making is done by more than one person (group of people). Issues that need to be highlighted in decision-making by a group of people, among others, is the number of decision-makers, the time should be allocated, and the increase the existing participants. GDSS provides support in solving the problem by providing a setting that supports communication for members who joined the group. The problem solving is done by a group of people who are members of the GDSS who need a voting method to obtain a group decision. Copeland score method is one method of voting to earn wages, which is a joint decision-making. So far, existing methods Copeland score considers that all of the decision maker has the same weight, but sometimes the decision maker has a different weight in determining a joint decision. For it is necessary to develop a method of voting with respect to the weight of each decision maker based on the level of expertise and interests to the problem.