Modelling Heterogeneity among Experts in Multi-criteria Group Decision Making Problems Pérez Gálvez, Ignacio Javier Alonso Burgos, Sergio Herrera Viedma, Enrique Group decision making Multi-criteria decision making Heterogeneous decision frameworks Linguistic approach Heterogeneity in group decision making problems has been recently studied in the literature. Some instances of these studies include the use of heterogeneous preference representation structures, heterogeneous preference representation domains and heterogeneous importance degrees. On this last heterogeneity level, the importance degrees are associated to the experts regardless of what is being assessed by them, and these degrees are fixed through the problem. However, there are some situations in which the experts’ importance degrees do not depend only on the expert. Sometimes we can find sets of heterogeneously specialized experts, that is, experts whose knowledge level is higher on some alternatives and criteria than it is on any others. Consequently, their importance degree should be established in accordance with what is being assessed. Thus, there is still a gap on heterogeneous group decision making frameworks to be studied. We propose a new fuzzy linguistic multi-criteria group decision making model which considers different importance degrees for each expert depending not only on the alternatives but also on the criterion which is taken into account to evaluate them. 2022-11-11T11:44:33Z 2022-11-11T11:44:33Z 2011 conference output Published version: Pérez, I.J... [et al.] (2011). Modelling Heterogeneity among Experts in Multi-criteria Group Decision Making Problems. In: Torra, V., Narakawa, Y., Yin, J., Long, J. (eds) Modeling Decision for Artificial Intelligence. MDAI 2011. Lecture Notes in Computer Science(), vol 6820. Springer, Berlin, Heidelberg. [https://doi.org/10.1007/978-3-642-22589-5_7] https://hdl.handle.net/10481/77925 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Springer