5
votes
2answers
405 views

Why do people fit polynomials?

Could someone explain the justification and limits of fitting polynomials to arbitrary data points? I mean what about square roots or fractional or inverse powers? Most of the time some wants to ...
1
vote
0answers
65 views

Books on Function approximation and Regression

Can you suggest books/articles on Function approximation Let me quote from the above wiki: Second, the target function, call it g, may be unknown; instead of an explicit formula, only a set of ...