Loumponias Kostas, Tsaklidis George
Department of Mathematics, Aristotle University of Thessaloniki, Thessaloniki, Greece.
J Appl Stat. 2020 Aug 25;49(2):317-335. doi: 10.1080/02664763.2020.1810645. eCollection 2022.
This paper concerns Kalman filtering when the measurements of the process are censored. The censored measurements are addressed by the Tobit model of Type I and are one-dimensional with two censoring limits, while the (hidden) state vectors are multidimensional. For this model, Bayesian estimates for the state vectors are provided through a recursive algorithm of Kalman filtering type. Experiments are presented to illustrate the effectiveness and applicability of the algorithm. The experiments show that the proposed method outperforms other filtering methodologies in minimizing the computational cost as well as the overall Root Mean Square Error (RMSE) for synthetic and real data sets.
本文关注过程测量值被删失时的卡尔曼滤波。删失测量值通过I型托比特模型来处理,且为具有两个删失界限的一维数据,而(隐藏的)状态向量是多维的。对于该模型,通过卡尔曼滤波类型的递归算法提供状态向量的贝叶斯估计。文中给出了实验以说明该算法的有效性和适用性。实验表明,对于合成数据集和真实数据集,所提出的方法在最小化计算成本以及总体均方根误差(RMSE)方面优于其他滤波方法。