On the least squares estimator in a nearly unstable sequence of stationary spatial AR models
classification
🧮 math.ST
math.PRstat.TH
keywords
autoregressivecoefficientsestimatorleastnearlysequencespatialsquares
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A nearly unstable sequence of stationary spatial autoregressive processes is investigated, when the sum of the absolute values of the autoregressive coefficients tends to one. It is shown that after an appropriate norming the least squares estimator for these coefficients has a normal limit distribution. If none of the parameters equals zero than the typical rate of convergence is n.
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