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Judgement Aggregation

Jon Williamson

in In Defence of Objective Bayesianism

Published in print:
2010
Published Online:
September 2010
ISBN:
9780199228003
eISBN:
9780191711060
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199228003.003.0008
Subject:
Mathematics, Probability / Statistics, Logic / Computer Science / Mathematical Philosophy

Section. 8.1 introduces the problem of judgement aggregation and some of the difficulties encountered in trying to solve this problem. Section. 8.2 introduces the theory of belief revision and ... More


Rationality, Reasoning, and Group Agency

Philip Pettit

in Emergence in Mind

Published in print:
2010
Published Online:
May 2010
ISBN:
9780199583621
eISBN:
9780191723483
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199583621.003.0017
Subject:
Philosophy, Philosophy of Mind, Philosophy of Science

The rationality of individual agents is secured for the most part by their make‐up or design. Some agents, however — in particular, human beings — rely on the intentional exercise of thinking or ... More


The Aggregate Utility Solution I: Which Attitudes to Aggregate?

Richard Pettigrew

in Choosing for Changing Selves

Published in print:
2019
Published Online:
January 2020
ISBN:
9780198814962
eISBN:
9780191852800
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198814962.003.0006
Subject:
Philosophy, Philosophy of Mind

The chapter starts to describe a new solution to the problem of choosing for changing selves. It proposes that we should consider it as a judgement aggregation problem. In a judgement aggregation ... More


On the Accuracy of Group Credences

Richard Pettigrew

in Oxford Studies in Epistemology Volume 6

Published in print:
2019
Published Online:
March 2019
ISBN:
9780198833314
eISBN:
9780191871658
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198833314.003.0006
Subject:
Philosophy, Metaphysics/Epistemology

We often ask for the opinion of a group of individuals. How strongly does the scientific community believe that the rate at which sea levels are rising has increased over the last 200 years? How ... More


Why Aggregate Using Weighted Averages?

Richard Pettigrew

in Choosing for Changing Selves

Published in print:
2019
Published Online:
January 2020
ISBN:
9780198814962
eISBN:
9780191852800
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198814962.003.0009
Subject:
Philosophy, Philosophy of Mind

This chapter defends the claim that we should aggregate an individual’s different utility functions at different times by taking a weighted average of them. It introduces the Principle of Minimal ... More


The Aggregate Utility Solution II: The Solution Itself

Richard Pettigrew

in Choosing for Changing Selves

Published in print:
2019
Published Online:
January 2020
ISBN:
9780198814962
eISBN:
9780191852800
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198814962.003.0007
Subject:
Philosophy, Philosophy of Mind

The previous chapter concluded that we should aggregate credences and utilities first. This chapter considers how we should aggregate them. It claims that we should use the individual’s current ... More


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