The development tools that are used to estimate the parameters of the model that the BCD is not a linear Gradient Descent techniques to find the parameters that correspond to the information the most.
The development tools used to estimate the parameters of the model BCD non-linear technique Gradient Descent to find parameters that comply with the most information.
Development tools used in the estimation of the parameters of the model BCD nonlinear technique to find Gradient Descent parameters consistent with as much information as possible.