Forgive my statistical ignorance, but isn't this form of cheating easily remedied by substituting a different class of characteristic functions?
If a different class of functions doesn't exist, it seems like your classmates just had better study material.
(I'm thinking about a calculus test with a previously unseen e^x. Wouldn't knowing the answer from looking at a previous year's test be more akin to 'learning' than 'cheating'?)
If a different class of functions doesn't exist, it seems like your classmates just had better study material.
(I'm thinking about a calculus test with a previously unseen e^x. Wouldn't knowing the answer from looking at a previous year's test be more akin to 'learning' than 'cheating'?)