EURO 2025 Leeds
Abstract Submission

2981. A multi-criteria group decision making and consensus reaching webtool for synchronous deliberations using 2-tuple TOPSIS

Invited abstract in session MA-8: Advances in preference learning methods, stream Multiple Criteria Decision Aiding.

Monday, 8:30-10:00
Room: Clarendon SR 2.08

Authors (first author is the speaker)

1. Konstantinos Koasidis
Institute of Communication & Computer Systems, National Technical University of Athens
2. Anastasios Soursos
Forecasting & Strategy Unit, School of Electrical and Computer Engineering, National Technical University of Athens
3. Georgios Xexakis
HOLISTIC P.C.
4. Álvaro Labella
Computer Science, University of Jaén
5. Anastasios Karamaneas
Electrical & Computer Engineering, Decision Support Systems Lab, National Technical University of Athens
6. Alexandros Nikas
Electrical & Computer Engineering, Decision Support Systems Lab, National Technical University of Athens

Abstract

Stakeholder engagement facilitation in research projects typically relies on qualitative frameworks or simplified quantitative approaches such as surveys, rendering elicitation of tangible and actionable outcomes challenging. Although group decision making can leverage the capacity of multi-criteria decision aid to address this gap, software solutions implementing such processes in real-life remain scarce. In this research, we present a group decision making and consensus reaching stakeholder elicitation webtool that can be used live in workshops to facilitate synchronous deliberations. The tool relies on easily comprehensible linguistic variables and employs the 2-tuple TOPSIS group decision making method to prioritise alternatives. It also introduces an algorithm that fleshes out differences among the voting patterns of different groups of voters and calculates a consensus metric to shed light on conflicts among participating stakeholders. Through targeted tips and suggestions provided live within the software and based on multiple rounds of stakeholder voting supported by discussions during the workshop, the tool can improve consensus and help synthesise multiple perspectives in the produced outcomes, assisting towards bridging the conflicts and producing widely accepted solutions. We validate the functionalities of the webtool in advancing stakeholder dialogue, in use cases in sustainability research aimed at prioritising climate solutions and interventions.

Keywords

Status: accepted

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