Talk:Curve fitting
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[edit] Illustrations Needed
Some examples would be extremely useful here.--jazzle 12:02, 28 August 2006 (UTC)
- Agreed. Do you have any in mind ? StuRat 07:05, 30 August 2006 (UTC)
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I have written a TableCurve 3D user defined function (udf) for a rotated and shifted paraboloid. With this module, available upon request, one can obtain the shift and rotation of paraboidal data with a few clicks in TableCurve 3D by Systat Software, Inc. http://www.systat.com
There is some problem with the syntax of the second paragraph, I think. Charles Matthews 16:34, 23 Jun 2004 (UTC)
This article seems to overlap strongly with regression analysis and (to some degree) with supervised learning and function approximation. Should we merge this into regression analysis? -- hike395 04:44, 1 Feb 2005 (UTC)
[edit] Restored article
This section has been restored to be an intro to both interpolation and regression analysis. It will be expanded, to hopefully include some illustrations. StuRat 05:36, 8 August 2005 (UTC)
- I feel that the reference to a line in slope/intercept form, y = mx + b, has some value to explain the relationship with a first degree polynomial, and should be restored. The later modification also makes it unclear whether the 3 collinear points is a case where we "got lucky" or not. The rest of the mods look good to me. StuRat 05:36, 8 August 2005 (UTC)
Feel free to put that back. :) By the way, it is good to keep a formal style, rather than conversational style, if possible. Cheers, Oleg Alexandrov 15:31, 8 August 2005 (UTC)
- I will keep that in mind, or should I say, "One will endeavor to utilize maximal formality, henceforth and hereafter, inasmuch as said formality is applicable." LOL
- We should also add sections on other types of curves, like Bezier/NURBS curves, in the future. These could be added to the new "Fitting data points to other curves" section, if small, or a new section for each curve type could be added, if large. StuRat 23:30, 8 August 2005 (UTC)
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- Oleg, referring to your (apparently truncated) comment on my last revision: I still think that the sentence "as opposed to the usual slope m for a line is slope/intercept form, or y = mx + b" is reduntant, come on, if people must know slope
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- ... I think we should write for people of all skill levels and backgrounds. While your students wouldn't need us to explain such basics, we might have high school or even middle school students looking up "curve fitting" here. While the detailed theory may well be beyond them, they could still benefit from learning the basics. StuRat 01:37, 9 August 2005 (UTC)
[edit] Non-linear curve fitting
There exists a stub article on non-linear curve fitting. I think that rather than expanding that stub, we should do a merge and expand on the material that already exists on non-linear curves in this article. Jyotirmoyb 05:24, 15 February 2007 (UTC)
[edit] Integrate with article nonlinear regression
In addition to nonlinear curve fitting, some coordination is needed with the regression articles, in particular with the article "nonlinear regression."
From a statistician's perspective, regression includes not only curve fitting but inference, for example computing a confidence interval for a regression prediction. Dfarrar 20:18, 20 February 2007 (UTC)
