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bio website anhhuy.ch
location Switzerland
age 22
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My name is Anh Huy Truong and I am currently studying mathematics at the ETH Zürich.


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accepted How can I find a non-negative interpolation function?
Feb
16
comment How can I find a non-negative interpolation function?
Do you have any idea what the constant you use to subtract depends on in order for the resulting function to being non-negative?
Feb
16
comment How can I find a non-negative interpolation function?
I was thinking about using the logarithm method after all by simply adding a constant to my values (e.g. $y_i + 1$) and then taking the logarithm. However, when I then take the exponential of the resulting interpolating polynomial, is there a formula to find the constant I have to subtract in order to get back? In the examples I tried out I could not find any regularity and most importantly the constant $-1$ does not work. :-(
Feb
16
comment How can I find a non-negative interpolation function?
I think the dirty solution will be best suited for my problem. I have values $y_i = 0$ which rules out taking the logarithm (or is there a solution for that issue?). However, if I am using Hermite interpolation (i.e. I want to interpolate derivatives as well), what values do I take for the derivatives? Simply the square roots?
Feb
15
asked How can I find a non-negative interpolation function?