Optimal partitioning of groups in selecting the best choice

Optimal partitioning of groups in selecting the best choice

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Article ID: iaor20021016
Country: United Kingdom
Volume: 28
Issue: 14
Start Page Number: 1367
End Page Number: 1386
Publication Date: Dec 2001
Journal: Computers and Operations Research
Authors:
Keywords: decision theory, programming: dynamic
Abstract:

This article deals with the group interview problem, in which each group contains several alternatives and each group of alternatives is presented and evaluated sequentially over time. We derive the optimal selection strategy for the group interview problem with a general utility function. Among the various types of utility function, we focus on the best choice problem, in which our utility is one if we successfully select the best choice and zero otherwise. We derive a simple selection rule called the optimal partitioning strategy in which the decision-maker divides the entire groups into two disjoint sets and, after evaluating the choices in the first set, chooses the relatively best choice available for the first time in the second set. Because the selected choice is not necessarily the absolutely best choice, we also consider the probability distribution of the actual rank of the choice selected under the partitioning strategy.

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