Revising incomplete attitudes

Synthese 171 (2):235 - 256 (2009)
Bayesian models typically assume that agents are rational, logically omniscient and opinionated. The last of these has little descriptive or normative appeal, however, and limits our ability to describe how agents make up their minds (as opposed to changing them) or how they can suspend or withdraw their opinions. To address these limitations this paper represents the attitudinal states of non-opinionated agents by sets of (permissible) probability and desirability functions. Several basic ways in which such states of mind can be changed are then characterised and compared with those found in AGM style models of attitude revision. Finally these models are employed to describe how agents make up their mind when deliberating.
Keywords Incomplete attitudes  Belief change  Preference change  Bayesianism  Indeterminate beliefs  Deliberation
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DOI 10.2307/40495996
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Isaac Levi (1974). On Indeterminate Probabilities. Journal of Philosophy 71 (13):391-418.

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