Results 181 to 190 of about 983,706 (222)
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A Penalized Synthetic Control Estimator for Disaggregated Data
Journal of the American Statistical Association, 2021Synthetic control methods are commonly applied in empirical research to estimate the effects of treatments or interventions on aggregate outcomes. A synthetic control estimator compares the outcome of a treated unit to the outcome of a weighted average ...
Alberto Abadie, Jérémy l'Hour
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A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity
, 1980This paper presents a parameter covariance matrix estimator which is consistent even when the disturbances of a linear regression model are heteroskedastic. This estimator does not depend on a formal model of the structure of the heteroskedasticity.
H. White
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MLESAC: A New Robust Estimator with Application to Estimating Image Geometry
Computer Vision and Image Understanding, 2000A new method is presented for robustly estimating multiple view relations from point correspondences. The method comprises two parts. The first is a new robust estimator MLESAC which is a generalization of the RANSAC estimator.
P. Torr, Andrew Zisserman
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Matching As An Econometric Evaluation Estimator
, 1998This paper develops the method of matching as an econometric evaluation estimator. A rigorous distribution theory for kernel-based matching is presented.
J. Heckman +2 more
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Matching As An Econometric Evaluation Estimator: Evidence from Evaluating a Job Training Programme
, 1997This paper considers whether it is possible to devise a nonexperimental procedure for evaluating a prototypical job training programme. Using rich nonexperimental data, we examine the performance of a two-stage evaluation methodology that (a) estimates ...
J. Heckman +2 more
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Speech enhancement using a minimum mean-square error log-spectral amplitude estimator
IEEE Transactions on Acoustics Speech and Signal Processing, 1984In this correspondence we derive a short-time spectral amplitude (STSA) estimator for speech signals which minimizes the mean-square error of the log-spectra (i.e., the original STSA and its estimator) and examine it in enhancing noisy speech.
Y. Ephraim, D. Malah
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A SIMPLE ESTIMATOR OF COINTEGRATING VECTORS IN HIGHER ORDER INTEGRATED SYSTEMS
, 1993Efficient estimators of cointegrating vectors are presented for systems involving deterministic components and variables of differing, higher orders of integration.
J. Stock, M. Watson
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