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Discovery-Driven Exploration of Data Cubes

  • Hypothesis-driven
    • exploration by user, huge search space
  • Discovery-driven (Sarawagi, et al.’98)
    • Effective navigation of large OLAP data cubes
    • pre-compute measures indicating exceptions, guide user in the data analysis, at all levels of aggregation
    • Exception: significantly different from the value anticipated, based on a statistical model
    • Visual cues such as background color are used to reflect the degree of exception of each cell

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