Aggregating agents with opinions about different propositions.

There are many reasons we might want to take the opinions of various individuals and pool them to give the opinions of the group they constitute. If all the individuals in the group have probabilistic opinions about the same propositions, there is a host of pooling functions we might deploy, such as...

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Publicado en:Synthese Vol. 200; no. 5; pp. 1 - 26
Autor principal: Pettigrew, Richard
Formato: Artículo
Publicado: Springer Nature Oct2022
Acceso en línea:Ver este registro en EBSCOhost
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        au: Pettigrew, Richard
        affil: Department of Philosophy, University of Bristol, Bristol, UK
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        Awareness growth
        Credences
        Expert judgment
        Judgment aggregation
        Linear pooling
        Probabilistic opinion pooling
        Subjective probabilities
      ab: There are many reasons we might want to take the opinions of various individuals and pool them to give the opinions of the group they constitute. If all the individuals in the group have probabilistic opinions about the same propositions, there is a host of pooling functions we might deploy, such as linear or geometric pooling. However, there are also cases where different members of the group assign probabilities to different sets of propositions, which might overlap a lot, a little, or not at all. There are far fewer proposals for how to proceed in these cases, and those there are have undesirable features. I begin by considering four proposals and arguing that they don’t work. Then I’ll describe my own proposal, which is intended to cover the situation in which we want to pool the individual opinions in order to ascribe an opinion to the group considered as an agent in its own right.
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