In Equation (13), P is the predicted probability of gully erosion, where the probability value varies from 0 to 1 on anS-shaped curve, and z is the linear combination expressed in the following equation. In Equation (14), b0 is the constant of the model, bi (i = 1, 2,…, n) is...
The absorbance was recorded using the equation: absorbance = log(1/reflectance). The final spectrum used in the data analysis was generated using the mean of the triplicate measurements [22]. 2.3. Data Preprocessing The datasets, which are composed of NIR spectra and quantitative results (i.e....
where y’ is the normalized water quality parameter, y is the originally measured water quality data, λ1 and λ2 are values that, when substituted in Equation (3), the standard deviation of y’ will be zero. Table 2. Box–Cox power transformation approaches. The Statgraphics Centurion ...