investigation of soil properties like cation exchange capacity (cec) plays important roles in study of environmental reaserches as the spatial and temporal variability of this property have been led to development of indirect methods in estimation of this soil characteristic. pedotransfer functions (ptfs) provide an alternative by estimating soil parameters from more readily available soil data...

Compositional data are vectors typically representing proportions of a whole, that is, those whose elements strictly positive and subject to unit-sum constraint. The increasing number fields where this type arises makes the development proper statistical tools an important issue. From regression perspective, whenever multivariate response is compositional vector, model accounts for constraint w...