WARNING: Estimates may not have converged.
ARIMA Estimation Optimization Summary
Estimation Method Conditional Least Squares
Parameters Estimated 3
Termination Criteria Maximum Relative Change in Estimates
Iteration Stopping Value 0.001
Criteria Value 0.002274
Maximum Absolute Value of Gradient 21.8997
R-Square Change from Last Iteration 0.001722
Objective Function Sum of Squared Residuals
Objective Function Value 1828.556
Marquardt's Lambda Coefficient 1E-12
Numerical Derivative Perturbation Delta 0.001
Iterations 25
Warning Message Estimates may not have converged.
做平稳序列arma建模时出现上述问题,该怎么解决呢,我使用了minic来进行的相对最优定阶,求助各位



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