TY  - BOOK
AU  - Koundouri, P.
AU  -  Papayiannis, G. I.
AU  -  Petracou, E. V.
AU  -  Yannacopoulos, A. N.
TI  - Consensus Group Decision Making Under Model Uncertainty with a View Towards Environmental Policy Making
SN  - 1573-1502
PB  - Environmental and Resource Economics
KW  -  Frechet Barycenter
KW  -  Group Decision Making
KW  -  Model Uncertainty
KW  - Environmental Decision Making
N2  - In this paper we propose a consensus group decision making scheme under model uncertainty consisting of an iterative two-stage procedure based on the concept of Frechet barycenter. Each stage consists of two steps: the agents first update their position in the opinion metric space adopting a local barycenter characterized by the agents' immediate interactions and then a moderator makes a proposal in terms of a global barycenter, checking for consensus at each stage. In cases of large heterogeneous groups, the procedure can be complemented by an auxiliary initial homogenization stage, consisting of a clustering procedure in opinion space, leading to large homogeneous groups for which the aforementioned procedure will be applied. The scheme is illustrated in examples motivated from environmental economics
UR  - https://doi.org/10.1007/s10640-024-00846-1
ER  -