estimateProcedure
(string) Precedure that is used for estimation (default: 'LS').
This property indicates which procedure should be used to estimate the coefficients of the polynomial.
"LS" uses the complete given xRegressor for the approximation by solving the least-sqares-problem.
"STEPWISE_LS" uses "stepwisefit" to search for a specific number of the given xRegressors depending on their importance. Afterwards their coefficients are estimate by least-squares.
"RIDGE" uses ridge regression to calculat the model parameters