Results 251 to 260 of about 7,731 (299)

Shrinking follow-up duration in pilonidal sinus surgery, 1970-2020: a patient-weighted longitudinal analysis of 2,285 studies. [PDF]

Langenbecks Arch Surg
Arslan NC, Seifert J, Doll D.
europepmc   +1 more source

State Earned Income Tax Credits and Firearm Suicides.

JAMA Netw Open
Asa N, Ellyson A, Rowhani-Rahbar A.
europepmc   +1 more source

Using wavelets to obtain a consistent ordinary least squares estimator of the long-memory parameter [PDF]

Journal of Forecasting, 1999
We develop an ordinary least squares estimator of the long memory parameter from a fractionally integrated process that is an alternative to the Geweke Porter-Hudak estimator.
Mark J Jensen
exaly   +1 more source

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The Equality of the Ordinary Least Squares Estimator and the Best Linear Unbiased Estimator

American Statistician, 1989
Abstract It is well known that the ordinary least squares estimator of Xβ in the general linear model E y = Xβ, cov y = σ2 V, can be the best linear unbiased estimator even if V is not a multiple of the identity matrix. This article presents, in a historical perspective, the development of the several conditions for the ordinary least squares estimator
Simo Puntanen, George P H Styan
exaly   +4 more sources

The bias of the ordinary least squares estimator in simultaneous equation models

Economics Letters, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jan F Kiviet, Garry D A Phillips
exaly   +6 more sources

Parameter estimation of a DC motor using ordinary least squares and recursive least squares algorithms

Proceedings of the 8th International Conference on Frontiers of Information Technology, 2010
This paper gives an insight into the working and efficiency of the two basic algorithms used for parameter estimation: Ordinary Least Squares (OLS) and Recursive Least Squares (RLS). A simple DC motor is taken here as an example of a SISO system. The input voltage and the output in the form of rotations of the motor are given to the parameter estimator.
Saher Arshad, Saima Qamar, Tayba Jabbar, Ahsan Malik   +3 more
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Frequency and Phase-Angle Estimation Using Ordinary Least Squares

IEEE Transactions on Industrial Electronics, 2015
The extensive use of grid-connected power electronics converters in the most different conditions, e.g., grid voltage quality, power level and grid codes, requires a robust synchronization method in order to properly feed other converter controllers with reliable and exact information, namely the phase-angle and the magnitude of the grid voltage.
Carlos João Ramos, António P. Martins 0001, Adriano S. Carvalho   +2 more
openaire   +1 more source

The Existence of Moments of the Ordinary Least Squares and Two-Stage Least Squares Estimators

Econometrica, 1972
This paper deals with two single-equation estimators in a set of simultaneous linear stochastic equations--namely, ordinary least squares (OLS) and two-stage least squares (2SLS). Under the assumption that all predetermined variables in the model are exogenous, necessary and sufficient conditions are obtained for the existence of even moments of the ...
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Ordinary and weighted least-squares estimators

Canadian Journal of Statistics, 1990
Summary: We propose a method of estimating the asymptotic relative efficiency (ARE) of the weighted least-squares estimator (WLSE) with respect to the ordinary least-squares estimator (OLSE) in a heteroscedastic linear regression model with a large number of observations but a small number of replicates at each value of the regressors. The weights used
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