A Brief Introduction to the spm Package
1 Introduction | 2 Spatial predictive methods | 3 Functions | 3.1 Averaged variable importance and relative variable influence | 3.2 Accuracy assessment | 3.2.1 Cross validation | Table 1: A procedure for predictive accuracy assessment | 3.2.2 Accuracy and error measures | 3.2.3 Convering error measures to vecv | 3.3 Generate spatial predictions | 4 Applications of these functions | 4.1 Examples for idwcv and rfokcv | 4.1.1 idwcv | 4.1.2 rfokcv | 4.2 Select optimal parameters and predictors | 4.2.1 Select optimal parameters and predictors | 4.2.2 Predictive accuracy of optimised model | 4.3 Stabilise the predictive accuracy produced by cross validation functions | 4.4 Examples for idwpred and rfokpred | 4.4.1 idwpred | 4.4.2 rfokpred | Acknowledgements | References