Weighted averaging, Jeffrey conditioning and invariance
Weighted averaging, Jeffrey conditioning and invariance
复制标题
加权平均、Jeffrey 调节和不变性
DOI:
10.1007/s11238-017-9639-3
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发表时间:
2018
影响因子:
0.8
通讯作者:
Bonnay
中科院分区:
文献类型:
--
作者:
Bonnay
Jeffrey conditioning tells an agent how to update her priors so as to grant a given probability to a particular event. Weighted averaging tells an agent how to update her priors on the basis of testimonial evidence, by changing to a weighted arithmetic mean of her priors and another agent’s priors. We show that, in their respective settings, these two seemingly so different updating rules are axiomatized by essentially the same invariance condition. As a by-product, this sheds new light on the question how weighted averaging should be extended to deal with cases when the other agent reveals only parts of her probability distribution. The combination of weighted averaging (for the events whose probability the other agent reveals) and Jeffrey conditioning (for the events whose probability the other agent does not reveal) is a comprehensive updating rule to deal with such cases, which is again axiomatized by invariance under embedding. We conclude that, even though one may dislike Jeffrey conditioning or weighted averaging, the two make a natural pair when a policy for partial testimonial evidence is needed.
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DOI:
--
发表时间:
1995
期刊:
International Joint Conference on Artificial Intelligence
影响因子:
--
作者:
Joseph Y. Halpern;D. Koller
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D. Koller
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1.6
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Dietrich F
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K. Steele
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--
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2002
期刊:
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DOI:
--
发表时间:
2005
期刊:
Philosophia Scientiæ
影响因子:
--
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