Download e-book for iPad: An Introduction to Stochastic Orders by Felix Belzunce, Carolina Martinez Riquelme, Julio Mulero

By Felix Belzunce, Carolina Martinez Riquelme, Julio Mulero

ISBN-10: 0128037687

ISBN-13: 9780128037683

ISBN-10: 0128038268

ISBN-13: 9780128038260

An creation to Stochastic Orders discusses this robust instrument that may be utilized in evaluating probabilistic types in numerous components comparable to reliability, survival research, dangers, finance, and economics. The publication presents a normal history in this subject for college kids and researchers who are looking to use it as a device for his or her examine.

In addition, clients will locate specified proofs of the most effects and functions to numerous probabilistic types of curiosity in different fields, and discussions of primary houses of a number of stochastic orders, within the univariate and multivariate circumstances, besides purposes to probabilistic models.

  • Introduces stochastic orders and its notation
  • Discusses assorted orders of univariate stochastic orders
  • Explains multivariate stochastic orders and their convex, chance ratio, and dispersive orders

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Extra resources for An Introduction to Stochastic Orders

Sample text

The behavior of the function β1α1 (α1 ) α2 −α1 g(x) x x x = α2 exp − , for all x > 0, f(x) β1 β2 β2 (α2 ) is equivalent to the behavior of h(x) = (α2 − α1 ) log(x) − x x + , β2 β1 for all x > 0.

Therefore, it is natural to define another criterion through the previous condition. Let us see the formal definition of this criterion, which is named the hazard rate order. 1. 10) or, equivalently, if G(x)/F(x) is increasing in x F(x) > 0 . The hazard rate order is stronger than the stochastic order, that is, X ≤hr Y ⇒ X ≤st Y. 10). 11) 46 An Introduction to Stochastic Orders As in the case of the stochastic order, the simplicity of this criterion often allows us to check it directly from its definition.

A treatment is tested by comparing the survival times of a group of illness people versus a control group. In such a situation, if the hazard rate functions cross each other once, then the treatment has benefits only in the early stage of a disease but does not have long-term advantages, or the treatment has benefits in the long run, but it may increase the risk in the early stage of the disease. 13 shows that, if the means are ordered, the mean residual life order holds in those situations where the hazard rate functions cross each other once.

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An Introduction to Stochastic Orders by Felix Belzunce, Carolina Martinez Riquelme, Julio Mulero

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