I am not sure exactly what you mean, but I will try with the following advice. See if you are able to define each element of your input data as a stochastic va

I am not sure exactly what you mean, but I will try with the following advice. See if you are able to define each element of your input data as a stochastic variable that you can sample from. Then make a function to generate a set of fixed value input data elements by sampling from the stochastic variables. Then run this many times to generate resulting basis vectors. Calculate relevant measures of variability from these vectors.