Estimating parameters of drift and diffusion coefficients for multidimensional stochastic delay equations with small noise are considered. The delay structure is written as an integral form with respect to a delay measure. Our contrast function is based on a local-Gauss approximation to the transition probability density of the process. We show consistency and asymptotic normality of the minimum-contrast estimator when the dispersion coefficient goes to zero and the sample size goes to infinity, simultaneously.
翻译:考虑在小噪声情况下估计多维随机延迟方程的漂移和扩散系数的参数。将延迟结构写成对延迟测度的积分形式。我们的对比函数基于该过程的转移概率密度的局部高斯逼近。我们证明了当离散系数趋近于零且样本量趋向无穷大时,最小对比估计量的一致性和渐近正态性。