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Evaluation of Knowledge

  • Are all mined knowledge interesting?
    • One can mine tremendous amount of “patterns” and knowledge
    • Some may fit only certain dimension space (time, location, …)
    • Some may not be representative, may be transient, …
  • Evaluation of mined knowledge → directly mine only interesting knowledge?
    • Descriptive vs. predictive
    • Coverage
    • Typicality vs. novelty
    • Accuracy
    • Timeliness

Speaker notes:

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