Issue MATH-1009 was closed as resolved in version 3.3. The issue raised was about the fact that the PolynomialFitter (now PolynomialCurveFitter) does the curve fit with non-linear regression (and requires initial guess and number of iterations).
I can’t think of any reason why a polynomial curve fit (with a least squares target) should be done this way instead of doing it with a linear method (like QR or SVD) and I don’t know of any other math package that does polynomial fits this way. I’m not a numerical methods expert, so maybe I’m wrong, but it seems that this really should be resolved before the release of Math 4.0 (or even 3.6). Should MATH-1009 be reopened, or should I create a new issue (which will just be a copy of 1009 changed to refer to PolynomialCurveFitter). Bruce --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
