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Data Breaking Bad

Avatar for Michael Hausenblas Michael Hausenblas
June 03, 2013
Technology
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200

Data Breaking Bad

Open Stage talk at Berlin Buzzwords 2013

Avatar for Michael Hausenblas

Michael Hausenblas

June 03, 2013
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Transcript

  1. Da Michael Hausenblas, MapR Technologies Berlin Buzzwords 2013, Open Stage

    Talk Friday, 7 June 13

  2. Nope. Not this one. Friday, 7 June 13

  3. Friday, 7 June 13

  4. things you can influence things that affect you try and

    focus on this stuff Friday, 7 June 13

  5. The awkward moment when I open the data I got

    from a customer Friday, 7 June 13

  6. http://techcrunch.com/2012/11/25/the-big-data-fallacy-data-%E2%89%A0-information-%E2%89%A0-insights/ aka crap in, crap out Friday, 7 June 13

  7. Some examples … Friday, 7 June 13

  8. • Encöding hell • Schema? Sure, I fax you a

    screenshot • Dupes and other fakes • Sampling Friday, 7 June 13

  9. Encöding hell application-specific encodings • URL encoding • HTML encoding

    • Database escaping non-ASCII? a%20percent-encoded%20string%20as%20of%20RFC%203986 a <strong>HTML</strong> encoded string Friday, 7 June 13

  10. • Use Unicode • Use Unicode • Use Unicode Encöding

    hell http://www.swedishfika.com/2010/01/19/escaping-from-encoding-hell/ Friday, 7 June 13

  11. • Encöding hell • Schema? Sure, I fax you a

    screenshot • Dupes and other fakes • Sampling Friday, 7 June 13

  12. Schema? Sure, I fax you a screenshot Friday, 7 June

    13

  13. Schema? Sure, I fax you a screenshot • There is

    a need for proper, formal documentation • For humans and machines • Basis for validation—automate! Friday, 7 June 13

  14. • Encöding hell • Schema? Sure, I fax you a

    screenshot • Dupes and other fakes • Sampling Friday, 7 June 13

  15. Dupes and other fakes Friday, 7 June 13

  16. Dupes and other fakes Friday, 7 June 13

  17. Dupes and other fakes • Use plots to get an

    overview • Watch out for outliers • Try to establish source for errors and fix • Document (in any case) Friday, 7 June 13

  18. • Encöding hell • Schema? Sure, I fax you a

    screenshot • Dupes and other fakes • Sampling Friday, 7 June 13

  19. • My data is too big. I can’t check it

    all. • Why don’t you sample, then? Sampling Friday, 7 June 13

  20. http://mortardata.com/ Friday, 7 June 13

  21. Friday, 7 June 13

  22. Go and buy this book. Now. Friday, 7 June 13