Results 11 to 20 of about 125,543 (299)

Estimation of Linear Models of Coregionalization by Residual Maximum Likelihood

open access: yesEuropean Journal of Soil Science, 2007
Summary Observations of ancillary soil properties spatially correlated to a soil property of interest may be used to increase the precision and reduce the sampling costs of a geostatistical survey. The relationship between such coregionalized properties must be expressed as a linear model of coregionalization but the conventional ...
Marchant, B. P., Lark, R. M.
openaire   +2 more sources

Robust estimation of the variogram by residual maximum likelihood

open access: yesGeoderma, 2007
For spatial prediction of soil variables where the local mean can be expressed as a local trend, or a linear function of some auxiliary (external drift) variable, the state-of-the-art is to estimate the spatial covariance parameters of the residual variation by residual maximum likelihood (REML).
Marchant, B. P., Lark, R. M.
openaire   +2 more sources

Blind Estimation of Residual Timing Error in OFDM Receivers: A Non-Data-Aided Maximum-Likelihood Approach [PDF]

open access: yes2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, 2006
This paper proposes a novel non-data-aided maximum likelihood (ML) approach for the estimation of the residual timing error in OFDM receivers. The novel approach effectively utilizes the finite alphabet property of the received symbol constellation to perform a near perfect residual timing error estimation.
Chandra R. N. Athaudage   +1 more
openaire   +3 more sources

Fluctuations in method‐of‐moments variograms caused by clustered sampling and their elimination by declustering and residual maximum likelihood estimation

open access: yesEuropean Journal of Soil Science, 2013
Summary Soil data accumulated in national and regional archives derive from many sources and tend to be concentrated in zones of particular interest. Experimental variograms computed from such data by the usual method of moments can appear highly erratic, and therefore models fitted to them are likely to be ...
Marchant, B. P.   +2 more
openaire   +2 more sources

Estimating the spatial scales of regionalized variables by nested sampling, hierarchical analysis of variance and residual maximum likelihood

open access: yesComputers & Geosciences, 2006
The variogram is essential for local estimation and mapping of any variable by kriging. The variogram itself must usually be estimated from sample data. The sampling density is a compromise between precision and cost, but it must be sufficiently dense to encompass the principal spatial sources of variance.
Webster, R.   +3 more
openaire   +2 more sources

Calibration of a Hub Dynamic Balancing Machine Based on the Least Squares Method and Systematic Error Analysis

open access: yesIEEE Access, 2020
To resolve issues such as excessive residual vibrations and unsatisfactory balance effects in the balancing process, the particle swarm optimization (PSO)algorithm is combined with the least squares influence coefficient method of rotor dynamic balance ...
Yuan Cao, Fang Li, Jianguo Cao, Tao Wang
doaj   +1 more source

A New Maximum Likelihood Estimator Formulated in Pole-Residue Modal Model [PDF]

open access: yesApplied Sciences, 2019
Recently, a lot of efforts have been devoted to developing more precise Modal Parameter Estimation (MPE) techniques. This is explained by the necessity in civil, mechanical and aerospace engineering of obtaining accurate estimates for the modal parameters of the tested structures, as well as of determining reliable confidence intervals for these ...
Sandro Amador   +3 more
openaire   +2 more sources

Estimation Procedures in Linear Mixed Effects Models for Repeated Measures Data [PDF]

open access: yesThe Egyptian Statistical Journal, 1993
The purpose of this paper is to derive estimation procedures; namely Maximum Likelihood (ML), Residual Maximum Likelihood (RML) and Minimum Norm Quadratic Unbiased estimates (MINQUE), for estimating the parameters and variance components in linear models
H.f. El-laithy
doaj   +1 more source

Hyperbolic Cosine–Exponentiated Exponential Lifetime Distribution and its Application in Reliability [PDF]

open access: yesInternational Journal of Supply and Operations Management, 2017
Recently, Kharazmi and Saadatinik (2016) introduced a new family of lifetime distributions called hyperbolic cosine – F (HCF) distribution. In the present paper, it is focused on a special case of HCF family with exponentiated exponential distribution as
Omid Kharazmi
doaj   +2 more sources

Computing approximate standard errors for genetic parameters derived from random regression models fitted by average information REML

open access: yesGenetics Selection Evolution, 2004
Approximate standard errors (ASE) of variance components for random regression coefficients are calculated from the average information matrix obtained in a residual maximum likelihood procedure.
Gilmour Arthur R   +2 more
doaj   +1 more source

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