R中任意函数的参数估计

Question

I have a linear but complex function in R, let's say

estimate.value <- function(x, y, z)

Now I have an output value and I want to estimate the input parameters one or two at a time. How do I do that?

eg I know that output value is 5 and and x=2, y=3 then how do I estimate z ? or I know output value is 5 and only know x=2, how do I estimate x and y ?

Answer 1

Your question essentially relates to inverting a function. You could do this by employing root-finding. Look here for an answer on SO regarding this.