| Re: "Correct" Data Philosophy [message #69218 is a reply to message #69024] |
Thu, 17 December 2009 12:33   |
Laura
Messages: 9
Registered: August 2009
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Junior Member |
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On Dec 17, 11:43 am, David Fanning <n...@dfanning.com> wrote:
> Folks,
>
> Every couple of weeks I get an e-mail from someone whose
> data is "missing" and they want to replace it with the
> "correct" value. These e-mails bug me because if the
> data is "missing" how the hell would I know what the
> "correct" value is suppose to be?
>
> But, generally speaking, they want some method to
> guess at the "correct" values by looking around the
> neighborhood, shuffling their feet, etc. I guess we
> have all been tempted to fudge data, if only for
> aesthetic reasons, so maybe it is a legitimate request.
>
> What would you tell them to do?
>
Is it similar to "interpolation" or "approximation" or "estimation"?
How about linear/bilinear/trilinear interpolation? Or minimum
curvature surface or thin-plate-spline? It also depends on how many
values are available and/or missing. There are other fitting/
interpolation functions too.
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