Results 31 to 40 of about 24,506 (225)

On subset least squares estimation and prediction in vector autoregressive models with exogenous variables

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract We establish the consistency and the asymptotic distribution of the least squares estimators of the coefficients of a subset vector autoregressive process with exogenous variables (VARX). Using a martingale central limit theorem, we derive the asymptotic normal distribution of the estimators. Diagnostic checking is discussed using kernel‐based
Pierre Duchesne   +2 more
wiley   +1 more source

Application of High‐Order Direct Flux Reconstruction and Stiffness‐Resilient Time Integration to Simulations of Idealized Atmospheric Flows

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
The proposed work implements a direct flux reconstruction method for spatial discretization and a stiffness‐resilient exponential time integration method for temporal discretization on the cube‐sphere grid. A space‐time tensor formalism is employed to provide a general representation in any curvilinear coordinate system. This combination enables highly
Stéphane Gaudreault   +6 more
wiley   +1 more source

An original and additional mathematical model characterizing a Bayesian approach to decision theory [PDF]

open access: yes, 2019
We propose an original mathematical model according to a Bayesian approach explaining uncertainty from a point of view connected with vector spaces. A parameter space can be represented by means of random quantities by accepting the principles of the ...
Angelini, Pierpaolo
core  

The CONEstrip algorithm [PDF]

open access: yes, 2013
Uncertainty models such as sets of desirable gambles and (conditional) lower previsions can be represented as convex cones. Checking the consistency of and drawing inferences from such models requires solving feasibility and optimization problems.
D. Avis   +7 more
core   +2 more sources

Multidimensional Scaling of the Cognitive Assessment System‐Second Edition: Implications for the Structural Validity of PASS Theory and Its Application in School Psychology

open access: yesPsychology in the Schools, EarlyView.
ABSTRACT This study applied multidimensional scaling (MDS) to the Cognitive Assessment System‐Second Edition (CAS2) to investigate the structural validity of PASS theory (Planning, Attention, Simultaneous, Successive) across two age groups (5−7, 8−18 years) in the normative sample (N = 1342).
Ryan J. McGill
wiley   +1 more source

LA NATURE DE L`INCERTITUDE ET LA RELEVANCE DES PREVISIONS FINANCIERES [PDF]

open access: yesAnnals of the University of Oradea: Economic Science, 2010
In the actual train of events, it would be a utopia for the economical agent to avoid the incertitude. It had been argued that the dimension of this phenomenon knows two extremes: once it is a generator of anxiety but then also a strong motivator ...
PRUNEA PETRU
doaj  

Extreme lower previsions

open access: yesJournal of Mathematical Analysis and Applications, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
De Bock, Jasper, de Cooman, Gert
openaire   +2 more sources

Weakly consistent extensions of lower previsions [PDF]

open access: yesFuzzy Sets and Systems, 2017
Several consistency notions are available for a lower prevision P assessed on a set D of gambles (bounded random variables), ranging from the well known coherence to convexity and to the recently introduced 2-coherence and 2-convexity. In all these instances, a procedure with remarkable features, called (coherent, convex, 2-coherent or 2-convex ...
Pelessoni, Renato, Vicig, Paolo
openaire   +4 more sources

An integrated social and natural sciences case study for the reuse of organic wastes as soil amendments

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Reusing organic waste materials, such as animal manure, as soil amendments reduces water and fertiliser demand, contributing to achieving the Sustainable Development Goals. However, organic wastes may contain contaminants of emerging concern (CECs), posing potential ecosystem and human health risks. Despite the importance of this issue, there is a lack
Felicity C. T. Elder   +7 more
wiley   +1 more source

Imprecise probability models for inference in exponential families [PDF]

open access: yes, 2005
When considering sampling models described by a distribution from an exponential family, it is possible to create two types of imprecise probability models.
De Cooman, Gert, Quaeghebeur, Erik
core  

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