How can the Generate Data operator be configured to create right or left skewed distributions?
michaelgloven
New Altair Community Member
How can the Generate Data operator be configured to create right or left skewed distributions? I see the normal distribution and would like to adjust this for skew and well as trimming negative tails.
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Hey,
i think i got something for you which i am writing for another client. This may be quickly extendable to cover your need.
I will connect with you via e-mail.
Cheers,
Martin5
Altair EmployeeAnswers
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Hi Martin, we've created a Monte Carlo process in RM and have been able to successfully apply a single gaussian cluster to input data to our function. However, some of the input data by it's nature is a right or left skew distribution and\or must be non-negative. The practical use case is this - when we calculate the maximum burst pressure of steel pipe using a specified pipe property from the mill (let's say 60,000 psi), it is very unlikely the specified property is an average. The 60,000 psi more often represents maybe 2-3 standard deviations to the left and the actual average is probably 68,000 psi with a small tail to the right capped at some maximum like 70,000 psi. So, we're trying to figure out how to shape a normal distribution with an understanding what our tails look like. I found ways to do this on stack exchange but the math requires calculus (which I don't know how to do easily in RapidMiner), and we're not trying to get an exact solution, just something that better represents reality.0
-
Hey,
i think i got something for you which i am writing for another client. This may be quickly extendable to cover your need.
I will connect with you via e-mail.
Cheers,
Martin5