Classification and Regression Trees (tree)
Classification and regression trees.

Multivariate Adaptive Regression Splines (earth)
Build regression models using the techniques in Friedman’s papers ‘Fast MARS’ and ‘Multivariate Adaptive Regression Splines’. (The term ‘MARS’ is trademarked and thus not used in the name of the package.)

Spatio-Temporal; Inverse Distance Weighting and Radial Basis Functions with Distance-Based Regression (geosptdb)
Spatio-temporal: Inverse Distance Weighting (IDW) and radial basis functions; optimization, prediction, summary statistics from leave-one-out cross-validation, adjusting distance-based linear regression model and generation of the principal coordinates of a new individual from Gower’s distance.