A Method of Weight Update in Group Decision-Making to Accommodate the Interests of All the Decision Makers

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Hamdani Hamdani 1,2,* Retantyo Wardoyo 1 Khabib Mustofa 1

1. Department of Computer Science and Electronics, Faculty of Mathematics and Natural Science, Universitas Gadjah Mada, Yogyakarta, Indonesia

2. Department of Computer Science, Faculty of Computer Science and Information Technology, Mulawarman University, Samarinda, Indonesia

* Corresponding author.

DOI: https://doi.org/10.5815/ijisa.2017.08.01

Received: 30 Mar. 2017 / Revised: 7 Apr. 2017 / Accepted: 15 Apr. 2017 / Published: 8 Aug. 2017

Index Terms

Weight update, TOPSIS, SAW, group decision-making


The weight updates are required for group decision-making which has similar parameters used by the decision maker (DM). Each DM as the stakeholder may have similar or different parameters in selecting parameters. Therefore, we have to accommodate the interests of all decision makers (DMs) to obtain alternative decisions. DM who has selected the parameters inputs the initial weight (W_Pi) based on the classical methods, and then recalculates to obtain the updated weights (W_j) until the final weight (W_j^i) is obtained for the alternative of group decision-making (GDM). The initial weight uses a weighting directly or multi criteria decision-making (MCDM). This method aims to provide the fairness for all DMs who have different knowledge in determining the value of the weights and the selection parameters. In order to obtain alternative decisions, we used technique for order preference by similarity to ideal solution (TOPSIS) method to update weight. In this paper, the alternative output of the decisions is applied in two stages: the decisions of each DM and the group, where this output consists of four types of alternatives. Based on the proposed method, the result of GDM shows that the third alternative is recommended in decision-making. This method is effectively performed in decision-making which has different parameters and weights of each DM to support group decision.

Cite This Paper

Hamdani Hamdani, Retantyo Wardoyo, Khabib Mustofa, "A Method of Weight Update in Group Decision-Making to Accommodate the Interests of All the Decision Makers", International Journal of Intelligent Systems and Applications(IJISA), Vol.9, No.8, pp.1-10, 2017. DOI:10.5815/ijisa.2017.08.01


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