Abstract
In the paper we consider the problem of estimation for a multivariate Gaussian random field whose vector mean depends linearly of a multidimensional parameter θ. A Bayesian estimator is derived and its distributions are analyzed under the assumption that the covariance function is completely known. Further, an invariant structure is introduced and the optimal invariant terminal decision function obtained. Finally, assuming that the covariance function is known up to a parameter σ 2 we estimate the parameters θ and σ 2 and prove some of their properties. The results of Ibarrola and Vélez (1990), (1992), for multidimensional stochastic processes are extended to the the present context and similar results are obtained.
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