Results 11 to 20 of about 355,029 (197)

Generalised Score and Wald Tests [PDF]

open access: yesAdvances in Decision Sciences, 2010
The generalised score and Wald tests are described and related to their nongeneralised versions. Two interesting applications are discussed. In the first a new test for the Behrens-Fisher problem is derived. The second is testing homogeneity of variances from multiple univariate normal populations.
Paul Rippon, J. C. W. Rayner
openaire   +2 more sources

Model-Based Wald Test for Adaptive Range-Spread Target Detection

open access: yesIEEE Access, 2020
For the problem of range-spread target detection, many adaptive detectors commonly estimate the covariance matrix of the disturbance by utilizing the training data without target information.
Jiabao Liu   +3 more
doaj   +1 more source

Parametrization-invariant Wald tests [PDF]

open access: yesBernoulli, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Larsen, P.V., Jupp, P.E.
openaire   +4 more sources

Clinical and prognostic value of TAMX index of interlobar arteries of the middle segment in patients after allograph kidney transplantation in the late postoperative period

open access: yesJournal of Education, Health and Sport, 2020
Introduction. Kidney transplantation has become the best treatment for patients with end-stage of chronic renal failure. The issues of studying the causes and mechanisms of the development of renal transplant dysfunction in the late postoperative period,
V. V. Yakimenko
doaj   +1 more source

Dynamic panel model in bioeconomy modeling

open access: yesAgricultural Economics (AGRICECON), 2022
Currently, technological development is driven by the search for solutions to prevent climate change and environmental degradation, increase energy efficiency, and meet societal needs in relation to avoiding conflict while navigating the implementation ...
Jakub Piecuch, Joanna Szarek
doaj   +1 more source

Prevalence, predictors and consequences of gambling on Children in Ghana

open access: yesBMC Public Health, 2022
Background Gambling is illegal for children in Ghana. However, young people, including children, are increasingly engaged in gambling across the country. Gambling is harmful and poses developmental implications for the youth, including children.
Sylvester Kyei-Gyamfi   +5 more
doaj   +1 more source

Efficient Wald Tests for Fractional Unit Roots [PDF]

open access: yesEconometrica, 2007
In this article we introduce efficient Wald tests for testing the null hypothesis of unit root against the alternative of fractional unit root. In a local alternative framework, the proposed tests are locally asymptotically equivalent to the optimal Robinson (1991, 1994a) Lagrange Multiplier tests.
Velasco Gómez, Carlos   +1 more
openaire   +4 more sources

Applying Wald's Variance Component Test

open access: yesThe Annals of Statistics, 1983
In this note a generalization of a variance component test that was first suggested by Wald is examined. Necessary and sufficient conditions are given for the test to be applicable in a mixed linear model. A uniqueness property of the test in terms of degrees of freedom is also obtained.
Seely, Justus F., El-Bassiouni, Yahia
openaire   +2 more sources

Testing for changes in forecasting performance [PDF]

open access: yes, 2019
We consider the issue of forecast failure (or breakdown) and propose methods to assess retrospectively whether a given forecasting model provides forecasts which show evidence of changes with respect to some loss function.
Perron, Pierre, Yamamoto, Yohei
core   +1 more source

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