FittingTest_BestModelChiSquared

FittingTest_BestModelChiSquared(*args)

Select the best model according to the \chi^2 goodness-of-fit test.

Parameters:

sample : 2-d sequence of float

Tested sample.

models : list of Distribution or DistributionFactory

Tested distributions.

Returns:

best_model : Distribution

The best distribution for the sample according to Bayesian information criterion. This may raise a warning if the best model does not perform well.

best_result : TestResult

Best test result.

Examples

>>> import openturns as ot
>>> ot.RandomGenerator.SetSeed(0)
>>> distribution = ot.Poisson()
>>> sample = distribution.getSample(30)
>>> tested_distributions = [ot.PoissonFactory(), ot.UserDefinedFactory()]
>>> best_model = ot.FittingTest.BestModelBIC(sample, tested_distributions)
>>> print(best_model)
Poisson(lambda = 1.06667)