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I have an array of random data with 5000 members. This is the output of a model. I want to fit a PCE to the distribution, however, I don't have any idea about the input. The output distribution is no…
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I have a random variable with uniform distribution in [a,b]. How can I use chaospy to estimate first 2 coefficients of the polynomial expansion of this random variable using the standard uniform distr…
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Dear Jonathf,
Hello I am trying to perform sensitivity analysis between the inputs and outputs of the model. I want to understand how a certain QoI changes assuming changes on the inputs.
Once d…
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Dear Joanthan,
Thank you very much at first implementing a nice and reliable tool.
I started to learn uncertainty quantification recently and accessed to chaospy through the Uncertainpy package.
…
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I am running the following code in order to find the approximation for my function based on different number of sample points and then find the first four central moments of the output. The variables…
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Dear Jonathan,
Suppose that I have a particular case with three random inputs with Gaussian behavior. Then, the appropiated orthogonal basis selected to these inputs are Hermite Polynomials.
If I…
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First of all, thank you for your time.
I have a doubt with how to make Sobol Sensitivity analysis with Monte Carlo implementation because the Sobol function needs a polynomial surrogate model.
I h…
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1. burr definition in cores.py is Burr type III (aka inverse burr or dagum), which is ok and is same form as burr in scipy.stats. However it is *not* Burr XII (Singh Mandalla) as claimed in the inlin…
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Dr. Jonathf,
First of all, thank you for your time.
Currently I'm trying to obtain same results as a example research paper about Uncertainty Quantification. With the main goal to compare results…
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I see that in your doctoral thesis you mentioned that -
> To be able to incorporate partial derivatives of the response, the partial derivative of the polynomial expansion must be available as wel…