Abstract
This paper reports on an application of the VICA-ELECTRE TRI to a real world case study. We used the model VICA (Visual, Interactive and Comparative Analysis of individual opinions) to aid a cooperative group achieving a collective solution to a multicriteria sorting problem (student allocation to classes on a language school). Based on the individual results initially obtained, the model provides tools for the visualization of results and their comparison. It also points out means to seek or build a consensus on a solution, by guiding the changes of parameters and/or preference revisions in different possible ways of interaction between the members of the group. After a brief description of the model, we present the procedures followed, from the meeting plan to the case analysis.
Highlights
According to Raiffa et al (2002: p389), the more complex and important a decision, the greater the likelihood that a cooperative working group will be designated to analyze and tackle the problem
The case study reported in this paper, applied the VICA-ELECTRE TRI model, implemented as an application on Microsoft Excel and supported by an analyst in a face to face meeting
After obtaining the final solution, the group had a brief discussion regarding the future use of the model for sorting new students
Summary
According to Raiffa et al (2002: p389), the more complex and important a decision, the greater the likelihood that a cooperative working group will be designated to analyze and tackle the problem. Leyva-López et al (2016) describe a web-based decision support system providing a feedback mechanism to help decision makers to change their preferences in order to achieve consensus in ranking problems using ELECTRE III They extend Herrera-Viedma et al (2007) consistency and consensus measures in order to cope with outranking relations and the use of different group coordination modes. The provided information should be presented in a visual and interactive form in order to decrease the cognitive burden upon the DMs. The case study reported in this paper, applied the VICA-ELECTRE TRI model, implemented as an application on Microsoft Excel and supported by an analyst in a face to face meeting. In a full group setting, the assignments of other group members will have to be considered as well
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