Hi all,
I think there is something to fix. This exception is probably due to Fix chaos
memory usage · openturns/openturns@aa04688
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Fix chaos memory usage · openturns/openturns@aa04688
Add accessors to the ProjectionStrategy interface to fix the reference counting
in FunctionalChaosAlgorithm. Fix...
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However I think that when using OT 1.9 with your script, there is also another
problem : FunctionalChaosAlgorithm sets a FixedExperiment and override the
GaussProductExperiment You can see it if you add pc_algo to the output of your
function and get its projection strategy
BTW, you can change the instanciation of the the class as follows :
pc_algo = ot.FunctionalChaosAlgorithm(inputSample, weights, column,
distribution, adaptiveStrategy)
pc_algo.setProjectionStrategy(projectionStrategy)
This will sets the projection you defined without any exception
Bien cordialement, Sofiane HADDAD
Le mercredi 29 novembre 2017 à 18:05:19 UTC+1, roy <[email protected]> a
écrit :
Hi Regis,
Thanks for your reply.
I am using the same script from this conversation.I enclosed it again.
Sincerely,
Pamphile
Le 29 nov. 2017 à 08:15, regis lebrun <[email protected]> a
écrit :
Hi Pamphile,
Could you please provide us a script that reproduce the error? It looks very
strange, as this class is tested in more than 10 unit tests and is extensively
used in industrial studies. BTW, ot.ComposedDistribution is by no means
restricted to the independent copula as your comment could suggest.
Please note that it is not the physical space distribution which is checked by
the GaussProductExperiment class, but the distribution defining the functional
basis. You should use either OrthogonalProductPolynomialFactory or
OrthogonalProductFunctionFactory to build your multivariate basis from 1D
orthogonal bases to insure that the resulting multivariate distribution has an
independent copula.
Please give me a feedback on this problem ASAP.
Cheer
Régis
Le mardi 28 novembre 2017 à 23:01:53 UTC+1, roy <[email protected]> a écrit :
Hi Regis,
On the 1.10, I get this error calling the FunctionalChaosAlgorithm:
File
"/Users/roy/Applications/miniconda3/envs/batman3/lib/python3.6/site-packages/openturns/metamodel.py",
line 3849, in __init__ this =
_metamodel.new_FunctionalChaosAlgorithm(*args)TypeError:
InvalidArgumentException : Error: the GaussProductExperiment can only be used
with distributions having an independent copula.
But this was working on 1.9. I do not understand the issue as the distribution
is an ot.ComposedDistribution. I tried to explicitly add
ot.IndependentCopulawithout any change.
Thanks in advance,
Pamphile ROY
Chercheur doctorant en Quantification d’Incertitudes
CERFACS - Toulouse (31) - France
+33 (0) 5 61 19 31 57
+33 (0) 7 86 43 24 22
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