نتایج جستجو برای: uncertainty theory

تعداد نتایج: 885868  

2002
Jane M. Booker

Uncertainties enter into a complex problem from many sources: variability, errors, and lack of knowledge. A fundamental question arises in how to characterize the various kinds of uncertainty and then to combine them within a problem such as the verification and validation of a structural dynamics computer model, reliability of a dynamic system, or a complex decision problem. Our aim is to expl...

1998
Michael J. W. Hall

It is shown for classical and quantum ensembles that there is a unique quantity which has the properties of a “volume”. This quantity is a function of the ensemble entropy, and hence provides a geometric interpretation for the latter. It further provides a simple geometric picture for deriving and unifying a number of results in classical and quantum information theory, and for discussing entro...

2013
Cliff Joslyn Jesse Weaver

In web-scale semantic data analytics there is a great need for methods which aggregate uncertainty claims, on the one hand respecting the information provided as accurately as possible, while on the other still being tractable. Traditional statistical methods are more robust, but only represent distributional, additive uncertainty. Generalized information theory methods, including fuzzy systems...

Journal: :Rel. Eng. & Sys. Safety 2004
Jon C. Helton Jay D. Johnson William Oberkampf

Several simple test problems are used to explore the following approaches to the representation of the uncertainty in model predictions that derives from uncertainty in model inputs: probability theory, evidence theory, possibility theory, and interval analysis. Each of the test problems has rather diffuse characterizations of the uncertainty in model inputs obtained from one or more equally cr...

2001
Thomas Becher Matthias Neubert

We reduce the perturbative uncertainty in the determination of |Vub| from inclusive semileptonic B decays by calculating the rate of B → Xu l ν events with dilepton invariant mass √ q2 > MB −MD at subleading order in the hybrid expansion, and to next-to-leading order in renormalization-group improved perturbation theory. We also resum logarithmic corrections to the leading power-suppressed cont...

2013
Mikołaj Czajkowski Nick Hanley Jacob LaRiviere

This paper develop and estimates a model of demand estimation for environmental public goods which allows for consumers to learn about their preferences through consumption experiences. We develop a theoretical model of Bayesian updating, perform comparative statics over the model, and show how the theoretical model can be consistently incorporated into a reduced form econometric model. We then...

2016
S Sampath K. Anjana

This paper considers the application of method of percentile matching available in statistical theory of estimation for estimating the parameters involved in uncertainty distributions. An empirical study has been carried out to compare the performance of the proposed method with the method of moments and the method of least squares considered by Wang and Peng (J. Uncertainty Analys. Appl. 2, (2...

2012
T. Roundy

This paper examines the influence of communication form on employee uncertainty during mergers and acquisitions (M&As). Specifically, the author uses narrative theory to analyze how narrative organizational communication affects the three components of uncertainty – decreased predictive, explanatory, and descriptive ability. It is hypothesized that employees whose organizations use narrative M&...

The Networked Control System in modern control widely uses to decrease the implementation cost and increasing the performance. NCS in addition to its advantages is inevitable. Nevertheless they suffer of some limitations and deficiencies. Packet loss is one of the main limitations which affect the control system in different conditions and finally may lead to system instability. For this reason...

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