Personal probabilities of probabilities
Personal probabilities of probabilities
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个人概率的概率
DOI:
10.1007/bf00169102
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发表时间:
1975
期刊:
影响因子:
--
通讯作者:
R. L. Winkler
中科院分区:
文献类型:
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作者:
J. Marschak;M. Degroot;J. Marschak;K. Borch;H. Chernoff;Morris De Groot;Morris De Groot;R. Dorfman;W. Edwards;T. Ferguson;K. Miyasawa;P. Randolph;L. J. Savage;Robert Schlaifer;R. L. Winkler
By definition, the subjective probability distribution of a random event is revealed by the (‘rational’) subject's choice between bets — a view expressed by F. Ramsey, B. De Finetti, L. J. Savage and traceable to E. Borel and, it can be argued, to T. Bayes. Since hypotheses are not observable events, no bet can be made, and paid off, on a hypothesis. The subjective probability distribution of hypotheses (or of a parameter, as in the current ‘Bayesian’ statistical literature) is therefore a figure of speech, an ‘as if’, justifiable in the limit. Given a long sequence of previous observations, the subjective posterior probabilities of events still to be observed are derived by using a mathematical expression that would approximate the subjective probability distribution of hypotheses,ifthese could be bet on. This position was taken by most, but not all, respondents to a ‘Round Robin’ initiated by J. Marschak after M. H. De-Groot's talk on Stopping Rules presented at the UCLA Interdisciplinary Colloquium on Mathematics in Behavioral Sciences. Other participants: K. Borch, H. Chernoif, R. Dorfman, W. Edwards, T. S. Ferguson, G. Graves, K. Miyasawa, P. Randolph, L. J. Savage, R. Schlaifer, R. L. Winkler. Attention is also drawn to K. Borch's article in this issue.