Contents
What is the minimized estimation variance in kriging?
The minimized estimation variance is: The kriging module includes two variogram models: Nugget effect (c0) : Though the value of the variogram for h = 0 is strictly 0, several factors, such as sampling error and short scale variability, may cause sample values separated by extremely small distances to be quite dissimilar.
What is the output of kriging interpolation module?
This module takes a number of input data, including a field of observed data, the estimated range, the resolution of the estimated range, variogram model, nugget effect and sill. The output is a field of estimated value and error variance. The error of i-th estimate, ri, is the difference of estimated value and true value at that same location:
How is the Kriging efficiency of a block calculated?
Kriging efficiency was first introduced by Krige (1997) as a measure of the efficiency of block estimates. The kriging efficiency is expressed as the kriging variance (σ2K) normalized by the variance of the true blocks (σ2) as a percentage (Equation [10]).
Which is kriging module for IBM Data Explorer 2.0?
The goal of this project is to implement an ordinary kriging module for IBM Data Explorer 2.0 using C language. This module takes a number of input data, including a field of observed data, the estimated range, the resolution of the estimated range, variogram model, nugget effect and sill.
How is a variogram used in kriging interpolation?
This method uses variogram to express the spatial variation , and it minimizes the error of predicted values which are estimated by spatial distribution of the predicted values. The goal of this project is to implement an ordinary kriging module for IBM Data Explorer 2.0 using C language.
Where does the Kriging module in Fortran come from?
The kriging module was implemented in two machines, IBM RS/6000 and HP-700. It is necessary to put the right library directory in the makefile. Some of the source codes were from netlib. Those source codes are used to invert matrix and were implemented by FORTRAN language originally.