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Super-extremal processes and the argmax process
- Part of
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- Journal:
- Journal of Applied Probability / Volume 31 / Issue 4 / December 1994
- Published online by Cambridge University Press:
- 14 July 2016, pp. 958-978
- Print publication:
- December 1994
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In this paper, we develop the probabilistic foundations of the dynamic continuous choice problem. The underlying choice set is a compact metric space E such as the unit interval or the unit square. At each time point t, utilities for alternatives are given by a random function
. To achieve a model of dynamic continuous choice, the theory of classical vector-valued extremal processes is extended to super-extremal processesY= {Yt, t > 0}. At any t > 0, Yt is a random upper semicontinuous function on a locally compact, separable, metric space E. General path properties of Y are discussed and it is shown that Y is Markov with state-space US(E). For each t > 0, Yt is associated.For a compact metric E, we consider the argmax process M = {Mt, t > 0}, where
. In the dynamic continuous choice application, the argmax process M represents the evolution of the set of random utility maximizing alternatives. M is a closed set-valued random process, and its path properties are investigated.
. To achieve a model of dynamic continuous choice, the theory of classical vector-valued extremal processes is extended to 
. In the dynamic continuous choice application, the argmax process 