Friday, September 23, 2011

What is meta-data?

When I am coaching, I find pleasure in explaining the biomechanics behind an element. I find the same pleasure in talking about the mechanics that drive the GS software. This time I want to talk about meta-data.

What is meta-data? Meta-data is an IT term and in short it refers to data about data. When you enter a symbol into the GS Judge application, that is data. The DV that appears above the symbol, is the meta-data. Every symbol on every apparatus requires a lot of meta-data. For example on balance beam, we need to know for every symbol:

  • Difficulty value (A-G)
  • Is scale (yes/no)
  • Is mount (yes/no/maybe)
  • Is dismount (yes/no)
  • Acro or dance
  • Split direction (cross split, side split, upward, diagonal)
  • Is salto (yes/no)
  • Is turn (yes/no)
  • Is roll (yes/no)
  • Is handstand (yes/no)
  • Is hold
  • Lower element
  • Has flight
  • Supporting hand count (0,1, 2)
  • Take off from both feet (yes/no)
  • Element direction (forward, backward, sideward)
  • LA rotation (180, 360, ...)
  • BA rotation (360, 720)
  • Landing type (on 1 foot, 2 feet, straddle sit, ...)
  • Can repeat for CV (yes, no, once, ...)

  • Having one of these values wrong for a symbol, can have a serious impact on the calculation of an exercise. Today I encountered such a problem. The acro line below was not recognized as a series with two different saltos. The reason was that the meta-data of the whip salto was incomplete: it lacked the BA rotation value and therefore was not recognized by the program as being a salto. The end result was one CR missing, which was a mistake of 0.5 points.

    When the new version will be released next week, I expect that more meta-data bugs will surface. If you detect one, don't hesitate to report it so we can improve the product.

    Regards, Tom

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