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Re: Best guess for data type

by InfiniteSilence (Curate)
on Apr 22, 2013 at 16:51 UTC ( #1029924=note: print w/ replies, xml ) Need Help??

in reply to Best guess for data type

  • Develop a set of heuristics - (ex. \d+\.?\d+? or S+, etc.)
  • Apply these to a random sampling of the data
  • Establish a confidence level that the given data are X
  • Proceed under that presumption unless proven wrong in which case modify definition of X to Y

I suppose there are hundreds of other ways to go about this. The reason I chose the above is that you could have millions of pieces of data to look at and exhaustively looking at each column would be a bit absurd. Besides, you would probably only need to 'catch' an error when trying to perform an activity with a subset like obtaining a standard deviation. In that case you would check each value anyway.

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