A Criticism of the Aggregation Model of Coexistence: Non-Independent Distribution of Dipteran Species on Ephemeral Resources

1988 ◽  
Vol 131 (3) ◽  
pp. 453-458 ◽  
Author(s):  
Wade B. Worthen ◽  
Terry R. McGuire
Keyword(s):  
Aggregation Model ◽  
Independent Distribution ◽  
Ephemeral Resources ◽  
Dipteran Species

Preference–Approval Structures in Group Decision Making: Axiomatic Distance and Aggregation

2021 ◽  
Author(s):  
Yucheng Dong ◽  
Yao Li ◽  
Ying He ◽  
Xia Chen
Keyword(s):  
Decision Making ◽  
Group Decision Making ◽  
Distance Function ◽  
Group Decision ◽  
Simple Majority ◽  
Simulation Experiments ◽  
Group Preference ◽  
Aggregation Model ◽  
Modeling Process ◽  
Ordinal Preference

Preference–approval structure combines the preference information of both ranking and approval, which extends the ordinal preference model by incorporating two categories of choice alternatives, that is, acceptable (good) and unacceptable (bad), in the preference modeling process. In this study, we present some axioms that imply the existence of a unique distance function of preference–approval structures. Based on theoretical analysis and simulation experiments, we further study a preferences aggregation model in the group decision-making context based on the proposed axiomatic distance function. In this model, the group preference is defined as a preference–approval structure that minimizes the sum of its distances to all preference–approval structures of individuals in the group under consideration. Particularly, we show that the group preference defined by the axiomatic distance–based aggregation model has close relationships with the simple majority rule and Cook and Seiford’s ranking.

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