Efficient Implementation of an Optimal Interpolator for Large Spatial Data Sets
نویسندگان
چکیده
Interpolating scattered data points is a problem of wide ranging interest. One of the most popular interpolation methods in geostatistics is ordinary kriging. The price for its statistical optimality is that the estimator is computationally very expensive. We demonstrate the space and time efficiency and accuracy of approximating ordinary kriging through the use of covariance tapering combined with iterative methods.
منابع مشابه
Large amplitude vibration prediction of rectangular plates by an optimal artificial neural network (ANN)
In this paper, nonlinear equations of motion for laminated composite rectangular plates based on the first order shear deformation theory were derived. Using a perturbation method, the nonlinear equation of motion was solved and analytical relations were obtained for natural and nonlinear frequencies. After proving the validity of the obtained analytical relations, as an alternative and simple ...
متن کاملSpatial Design for Knot Selection in Knot-Based Low-Rank Models
Analysis of large geostatistical data sets, usually, entail the expensive matrix computations. This problem creates challenges in implementing statistical inferences of traditional Bayesian models. In addition,researchers often face with multiple spatial data sets with complex spatial dependence structures that their analysis is difficult. This is a problem for MCMC sampling algorith...
متن کاملAnalysis of Local Community Perception of Physical-Spatial Reconstruction of Hadi Project Implementation in Roshtkhar District
Introduction Many rural development projects and projects are not being evaluated. Therefore, rural developers rarely know their short-term and long-term implications. On the other hand, in order to achieve efficient service and comprehensive coverage of services in all rural areas, emphasis is placed on reaching the hierarchy of rural areas, and to achieve these two objectives, the preparatio...
متن کاملDesign and Implementation of Low Power High Speed VLSI DSP System for Multirate Polyphase Interpolator
Interpolator is an important sampling device used for Multirate filtering to provide signal processing in wireless communication system. There are many applications in which sampling rate must be changed. Recent advances in mobile computing and communication applications demand low power and high speed VLSI DSP systems. In this paper, an efficient method has been presented to implement low powe...
متن کاملAnalysis and design of minimax-optimal interpolators
We consider a class of interpolation algorithms, including the least-squares optimal Yen interpolator, and we derive a closed-form expression for the interpolation error for interpolators of this type. The error depends on the eigenvalue distribution of a matrix that is specified for each set of sampling points. The error expression can be used to prove that the Yen interpolator is optimal. The...
متن کامل