Research Article

Prediction of Soil Available Boron Content in Visible-Near-Infrared Hyperspectral Based on Different Preprocessing Transformations and Characteristic Wavelengths Modeling

Table 3

The categories of different models based on RPD values.

RPDLevel

RPD ≤ 1.4C
1.4 < RPD ≤ 2.0B
RPD > 2.0A