Ok, I will do!
Being new to ML let me be not so clear.



 KFrank:

You say that you have “input that represents the parameters of a
system,” and that you want “to look for the right parameter tuning
through an iterative way.” Does this mean that you want to tune
your input parameters, rather than the parameters (e.g., weights
and biases) in neural network?


Anyway yes, I want to tune my imput parameters.



 KFrank:

ou say “I reduce the input until I find a a satisfactory error
probability.” Does that mean that you simply make the values
of your input parameters smaller? Or do you adjust your input
parameters in some more complicated way? Are you hoping to
use a pytorch optimizer to adjust your input parameters for you?


And yes, I simply make the values of my input parameters smaller, without any advanced technique.
Thank you againg, best wishes!