Traditional accounts of belief change have often been criticised for placing undue emphasis on the new belief provided as input. A recent proposal to address such issues is Ghose and Goebel’s [6] framework for non-prioritised belief change based on default theories. A novel feature of their approach is the introduction of disbeliefs alongside beliefs which allows for a view of belief contractio...

by Mordecai Kurz and Maurizio Motolese A very preliminary draft: February 2, 2010 Summary: Why do risk premia vary over time? We examine this problem theoretically and empirically by studying the effect of market belief on risk premia. Individual belief is taken as a fundamental, primitive, state variable. Market belief which is the distribution of individual beliefs is observable, it is centra...

In this thesis, I criticise traditional epistemic logics based on possible worlds semantics, inspired by Hintikka, as a framework for representing the beliefs and knowledge of agents. The traditional approach suffers from the logical omniscience problem: agents are modelled as knowing all consequences of their knowledge, which is not an admissible assumption when modelling real-world reasoning ...

Traditionally, sensory processing and motor control have been studied separately, reflecting the belief that sensory and motor streams remain independent until linked via cortical “associative” areas. Although this belief no longer dominates neuroscience, the traditional tendency to continue to study sensory processing and motor control separately is not easily overcome. Only after closely exam...

When using Bayesian networks for modelling the behavior of man-made machinery, it usu­ ally happens that a large part of the model is deterministic. For such Bayesian networks the deterministic part of the model can be represented as a Boolean function, and a cen­ tral part of belief updating reduces to the task of calculating the number of satisfying configurations in a Boolean function. In th...