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Raiffa argues as follows. Suppose someone has the following preferences. If forced to take Gamble A they would bet on the boxer, but if given a free choice between the gambles they would prefer Gamble B. Presumably, such a person when allowed to choose Gamble A would prefer to simply bet on the boxer
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Gamble A, in which you bet on the outcome of a fight between the world's greatest boxer and the world's greatest wrestler in a ring fight. (Assume you are fairly ignorant about martial arts and would have great difficulty making a choice of whom to bet on.) If your chosen champion wins you win $ 500
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Gamble B. Draw a ball from an opaque urn known to contain 50 orange and 50 blue balls. You will receive $ 500 if you draw an orange ball and nothing for a blue ball. The balls have been thoroughly mixed and you should assume that all balls are equally likely to be drawn. The draw takes place after
416:, they should also prefer to bet on the boxer than on Gamble B. A similar argument can be used to show that when the player has no preference between the boxer and the wrestler he should also have no preference between Gamble A and Gamble B.
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Raiffa argues that a decision-maker should in fact assign a subjective probability of one-half to each outcome of Gamble A, provided that no information was available that makes one outcome more likely than the other.
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Raiffa, H. and
Schlaifer, R. (1961). Applied Statistical Decision Theory. Division of Research, Harvard Business School, Boston. 1968 paperback edition, MIT Press, Press, Cambridge, MA. Wiley Classics Library edition
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After service in the Army Air Forces during World War II, Raiffa received a bachelor's degree in mathematics in 1946, a master's degree in statistics in 1947 and a PhD in mathematics in 1951, all from the
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Many people would feel more unsure about taking Gamble A in which the probabilities are unknown, rather than Gamble B, in which the probabilities are easily seen to be one half for each outcome.
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Keeney, R. L. and Raiffa, H. (1976). Decisions with
Multiple Objectives: Preferences and Value Tradeoffs. Wiley, New York. Reprinted, Cambridge Univ. Press, New York (1993). MR0449476
419:(The axiom of substitutability says that if someone is indifferent between outcomes A and B and indifferent between outcomes A and C, they should be indifferent between B and C. The
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rather than toss a coin to decide the matter of whether they should bet on the boxer or the wrestler. But this randomised approach is equivalent to Gamble B. So, by the
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Raiffa, H., Richardson, J. and
Metcalfe, D. (2003). Negotiation Analysis: The Science and Art of Collaborative Decision. Harvard Univ. Press, Cambridge, MA.
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I think of myself as a decision analyst who believes in using subjective probabilities. I would prefer being called a "subjectivist" than a "Bayesian."
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disagree with Raiffa's reasoning and have devised alternative interpretations of decision theory. One of the most radical departures is
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Pratt, J. W., Raiffa, H. and
Schlaifer, R. (1995). Introduction to Statistical Decision Theory. MIT Press, Cambridge, MA. MR1326829
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Raiffa, H. (1968). Decision
Analysis: Introductory Lectures on Choices Under Uncertainty. Addison-Wesley, Reading, MA.
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Raiffa, H. (2011). Memoir: Analytical Roots of a
Decision Scientist. CreateSpace Independent Publishing Platform
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I got an idea: call it applied systems analysis, because nobody will know what it means. We had a clean slate.
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467:. Annals of Mathematics Studies. Vol. 2. Princeton, N. J.: Princeton University Press. pp. 51–73.
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Hammond, J. S., Keeney, R. L. and Raiffa, H. (1998). Smart
Choices. Harvard Business School Press, Boston.
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Fienberg, Stephen E. (2008). "The Early
Statistical Years: 1947–1967. A Conversation with Howard Raiffa".
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scientist the idea of using
Bayesian methods to search for a missing US Air Force hydrogen bomb lost near
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otherwise you get nothing. You place your choice in a sealed envelope, which is opened after the game.
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says that if someone prefers outcome A to B and also prefers B to C, then they should prefer A to C.)
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A lecture of his in the 1960s concerning the use of
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Consider a situation in which you are required to gamble and are given two possible gambles.
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Raiffa, H. (1982). The Art and Science of Negotiation. Harvard Univ. Press, Cambridge, MA.
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Raiffa, H. (2002). Negotiation Analysis. Harvard Univ. Press, Cambridge, MA.
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and argues that subjective probabilities should follow the same rules (the
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University of Michigan College of Literature, Science, and the Arts alumni
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362:. Craven used the same methods again in the search for the lost submarine
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from the Institute of Operations Research and the Management Sciences
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in 1968. Raiffa has analysed situations involving the use of
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Members of the United States National Academy of Engineering
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Profiles in Operations Research: Pioneers and Innovators
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Games and Decisions: Introduction and Critical Survey
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Games and decisions: introduction and critical survey
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International Institute for Applied Systems Analysis
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377:) as objective, frequency-based probabilities.
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650:Raiffa, Howard (September 23, 1992).
438:completely, in favour of a theory of
740:by R. Duncan Luce and Howard Raiffa"
465:Contributions to the theory of games
256:adding citations to reliable sources
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333:Applied Statistical Decision Theory
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869:Fellows of the Econometric Society
524:Paperback reprint, Dover, New York
484:; Thrall, Robert M., eds. (1954).
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793:Biography of Howard Raiffa
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339:introduced the idea of
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432:Dempster-Shafer theory
371:subjective probability
218:University of Michigan
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201:negotiation analysis
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514:. New York: Wiley.
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