Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery
 
PerlMonks  

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.

Celebrate Intellectual Diversity


Comment on Re: Best guess for data type

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1029924]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others exploiting the Monastery: (3)
As of 2014-11-24 03:58 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My preferred Perl binaries come from:














    Results (135 votes), past polls