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C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\pmdarima\arima\_auto_solvers.py:524: ModelFitWarning: Error fitting ARIMA(4,1,0)(2,0,2)[12] (if you do not want to see these warnings, run with error_action="ignore").
Traceback:
Traceback (most recent call last):
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\pmdarima\arima\_auto_solvers.py", line 508, in _fit_candidate_model
fit.fit(y, X=X, **fit_params)
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\pmdarima\arima\arima.py", line 603, in fit
self._fit(y, X, **fit_args)
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\pmdarima\arima\arima.py", line 524, in _fit
fit, self.arima_res_ = _fit_wrapper()
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\pmdarima\arima\arima.py", line 510, in _fit_wrapper
fitted = arima.fit(
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\statsmodels\tsa\statespace\mlemodel.py", line 704, in fit
mlefit = super(MLEModel, self).fit(start_params, method=method,
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\statsmodels\base\model.py", line 563, in fit
xopt, retvals, optim_settings = optimizer._fit(f, score, start_params,
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\statsmodels\base\optimizer.py", line 241, in _fit
xopt, retvals = func(objective, gradient, start_params, fargs, kwargs,
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\statsmodels\base\optimizer.py", line 651, in _fit_lbfgs
retvals = optimize.fmin_l_bfgs_b(func, start_params, maxiter=maxiter,
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\scipy\optimize\_lbfgsb_py.py", line 197, in fmin_l_bfgs_b
res = _minimize_lbfgsb(fun, x0, args=args, jac=jac, bounds=bounds,
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\scipy\optimize\_lbfgsb_py.py", line 359, in _minimize_lbfgsb
f, g = func_and_grad(x)
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\scipy\optimize\_differentiable_functions.py", line 285, in fun_and_grad
self._update_fun()
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\scipy\optimize\_differentiable_functions.py", line 251, in _update_fun
self._update_fun_impl()
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\scipy\optimize\_differentiable_functions.py", line 155, in update_fun
self.f = fun_wrapped(self.x)
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\scipy\optimize\_differentiable_functions.py", line 137, in fun_wrapped
fx = fun(np.copy(x), *args)
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\statsmodels\base\model.py", line 531, in f
return -self.loglike(params, *args) / nobs
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\statsmodels\tsa\statespace\mlemodel.py", line 939, in loglike
loglike = self.ssm.loglike(complex_step=complex_step, **kwargs)
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\statsmodels\tsa\statespace\kalman_filter.py", line 983, in loglike
kfilter = self._filter(**kwargs)
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\statsmodels\tsa\statespace\kalman_filter.py", line 903, in _filter
self._initialize_state(prefix=prefix, complex_step=complex_step)
File "C:\Users\{user}\program\miniconda3\envs\pywork\lib\site-packages\statsmodels\tsa\statespace\representation.py", line 983, in _initialize_state
self._statespaces[prefix].initialize(self.initialization,
File "statsmodels\tsa\statespace\_representation.pyx", line 1373, in statsmodels.tsa.statespace._representation.dStatespace.initialize
File "statsmodels\tsa\statespace\_representation.pyx", line 1362, in statsmodels.tsa.statespace._representation.dStatespace.initialize
File "statsmodels\tsa\statespace\_initialization.pyx", line 288, in statsmodels.tsa.statespace._initialization.dInitialization.initialize
File "statsmodels\tsa\statespace\_initialization.pyx", line 406, in statsmodels.tsa.statespace._initialization.dInitialization.initialize_stationary_stationary_cov
File "statsmodels\tsa\statespace\_tools.pyx", line 1206, in statsmodels.tsa.statespace._tools._dsolve_discrete_lyapunov
numpy.linalg.LinAlgError: LU decomposition error.
warnings.warn(warning_str, ModelFitWarning)
Describe the bug
Hi. I ran the sample https://github.com/alkaline-ml/pmdarima#quickstart-examples under Python 3.9.17 and got warnings below
To Reproduce
Just run the wine sample.
Versions
Expected Behavior
Run as usual without any warnings and errors.
Actual Behavior
Warnings raised.
Additional Context
No response
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