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Robust regression based on shrinkage with application to Living Environment Deprivation
(Springer, 2020-01-01)
A robust estimator is proposed for the parameters that characterize the linear regression problem. It is based on the notion of shrinkages, often used in Finance and previously studied for outlier detection in multivariate ...
Optimal Shrinkage Estimations for the Parameters of Exponential Distribution Based on Record Values
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Estadística, 2016-01-01)
This paper studies shrinkage estimation after the preliminary test for the parameters of exponential distribution based on record values. The optimal value of shrinkage coefficients is also obtained based on the minimax ...
Effectiveness of shrinkage-reducing admixtures on Portland pozzolan cement concrete
(CONSEJO SUPERIOR INVESTIGACIONES CIENTIFICAS-CSIC, 2005)
Drying shrinkage causes tensile stress in restrained concrete members. Since all structural elements are subject to some degree of restraint, (trying shrinkage is regarded to be one of the main causes of concrete cracking.
A bayesian approach to shrinkage estimators
(Universidade Federal de Lavras, 2016)
Adaptive LASSO estimation for ARDL models with GARCH innovations
(Taylor & Francis Inc, 2017)
In this paper, we show the validity of the adaptive least absolute shrinkage and selection operator (LASSO) procedure in estimating stationary autoregressive distributed lag(p,q) models with innovations in a broad class ...
Creep and shrinkage of high-performance lightweight concrete
(AMER CONCRETE INST, 2004)
Two high-performance lightweight concrete (HPLC) mixtures with average compressive strengths of 68.5 and 75.4 MPa (9950 and 10,950 psi) were developed. Their air-dry unit weights were 1875 and 1905 kg/m(3) (117 and 119 ...
¿Agrega valor el uso de la metodología Shrinkage en la estimación de la matriz de covarianzas para el mercado accionario colombiano?
(Universidad EAFITEconomíaEscuela de Economía y Finanzas. Departamento de Economía.Medellín, 2019)
This article proposes to estimate the covariance matrix of stock returns in Colombian case by an optimally weighted average of two existing estimators the sample covariance matrix and singleindex covariance matrix proposed ...
Estimation of Compression and Shrinkage Properties of Brazilian Tropical Timber through Porosimetry Analysis by Mercury Intrusion
(North Carolina State Univ Dept Wood & Paper Sci, 2022-02-01)
Wood is a natural material with properties that are strongly influenced by anatomical characteristics, so studies that aim to correlate properties through empirical equations in search of simplification to obtain the values ...
Evaluation of the thermal shrinkage of titanium and the setting and thermal expansion of phosphate-boded investments
(Elsevier B.V., 2007-07-01)
Statement of problem. There are few studies on titanium casting shrinkage, and phosphate-bonded investments for titanium casting have not produced appropriate marginal fit.Purpose. The purpose of this study was to determine ...
Effect of shrinkage on prediction accuracy of the water diffusion model for pineapple drying
(Wiley Blackwell Publishing, Inc, 2013-02)
Drying kinetics of pineapple slabs was analyzed. Fruits were cut into 6-mm-thick slices and dried in a convective cross flow dryer at constant air velocity (1.5 m/s) and temperature (45, 60 or 75C). Two simple diffusional ...