نتایج جستجو برای: random variables and uncertainty

تعداد نتایج: 16895845  

A. Dembin ́ska, N. Balakrishnan,

In the absolutely continuous case, order statistics, record values and several other models of ordered random variables can be viewed as special cases of generalized order statistics, which enables a unified treatment of their theory. This paper deals with discontinuous generalized order statistics, continuing on the recent work of Tran (2006). Specifically, we show that in general neither re...

Journal: :iranian journal of fuzzy systems 2012
m. g. akbari m. khanjari sadegh

in statistical inference, the point estimation problem is very crucial and has a wide range of applications. when, we deal with some concepts such as random variables, the parameters of interest and estimates may be reported/observed as imprecise. therefore, the theory of fuzzy sets plays an important role in formulating such situations. in this paper, we rst recall the crisp uniformly minimum ...

Journal: :iranian journal of science and technology (sciences) 2006
m. amini

in this paper, we extend some famous maximal inequalities and obtain strong laws of largenumbers for arbitrary random variables by use of these inequalities and martingale techniques.

The issue of uncertainty and its economic impact is one of the topics that economic researchers have considered in recent years. In conditions of uncertainty, the decision of economic units to produce, consume and invest, etc., is different from normal conditions. This study aims to determine the index of economic uncertainty for Iran according to the channels of its impact on the economy. Ther...

Journal: :تحقیقات اقتصادی 0
سید جمال الدین محسنی زنوزی استادیار اقتصاد دانشگاه ارومیه اکبر حسن زاده دانشجوی دکتری اقتصاد دانشگاه ارومیه بهروز جعفرزاده عضو هیأت علمی دانشگاه غیرانتفاعی فرهیختگان کرمان و دانشجوی دکتری اقتصاد دانشگاه یزد

interest as investment opportunity cost or in other words cost of obtaining the credit requirement in the production process, have a key role in the good's cost price and hence it's necessary to control this kind of variables that have harmful effects on the interest rate's trends. among this, the unexpected changes in some variables that can have destructive effects on interest ...

Milad Ahmadi Brace

The fuzzy logic concept provides a natural way of dealing with problems in which the source of imprecision is an absence of sharply defined criteria rather than the presence of random variables. The fuzzy approach considers cases where uncertainties play a role in the control mechanism of the concerned phenomena. Fuzzy modeling includes fuzzification, fuzzy analysis and defuzzification. In this...

In this paper, the concepts of positive dependence and linearlypositive quadrant dependence are introduced for fuzzy random variables. Also,an inequality is obtained for partial sums of linearly positive quadrant depen-dent fuzzy random variables. Moreover, a weak law of large numbers is estab-lished for linearly positive quadrant dependent fuzzy random variables. Weextend some well known inequ...

In a celebrated work by Shao [13] several inequalities for negatively associated random variables were proved. In this paper we obtain some maximal inequalities for associated random variables. Also we establish a maximal inequality for demimartingales which generalizes and improves the result of Christofides [4].

1998
Warwick Harvey Peter J. Stuckey

Propagation based nite domain solvers provide a general mechanism for solving combinatorial problems. Diierent propagation methods can be used in conjunction by communicating through the domains of shared variables. The exibility that this entails has been an important factor in the success of propagation based solving for solving hard combinatorial problems. In this paper we investigate how li...

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