Current Slide

Small screen detected. You are viewing the mobile version of SlideWiki. If you wish to edit slides you will need to use a larger device.

Challenges for OLAP on Sampling Data

  • Computing confidence intervals in OLAP context
  • No data?
    • Not exactly. No data in subspaces in cube
    • Sparse data
    • Causes include sampling bias and query selection bias
  • Curse of dimensionality
    • Survey data can be high dimensional
    • Over 600 dimensions in real world example
    • Impossible to fully materialize

Speaker notes:

Content Tools

Sources

There are currently no sources for this slide.