Disentangling the value premium in the UK
AbstractPurpose – The purpose of this paper is to clarify a number of important facts about info-gap decision theory. Design/methodology/approach – Theorems are put forward to rebut claims made about info-gap decision theory in papers published in this journal and elsewhere. Findings – Info-gap's robustness model is a simple instance of the most famous model in classical decision theory for the treatment of decision problems subject to severe uncertainty, namely Wald's maximin model. This simple instance is the equivalent of the well-established model known universally as radius of stability. Info-gap's robustness model has an inherent local orientation. Therefore, it is in principle unable to address the fundamental difficulties presented by the type of severe uncertainty that is postulated by info-gap decision theory. Practical implications – These findings caution against accepting the assertions made in the info-gap literature about: info-gap decision theory's role and place in decision making under severe uncertainty; and its ability to model, analyze, and manage severe uncertainty. Originality/value – This paper exposes the serious difficulties with claims made in papers published in this journal and elsewhere regarding the place and role of info-gap decision theory in decision theory and its ability to handle severe uncertainty.
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Bibliographic InfoArticle provided by Emerald Group Publishing in its journal Journal of Risk Finance.
Volume (Year): 11 (2010)
Issue (Month): 3 (May)
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