Aggregation challenges

• Different coverage along these dimensions across data sets

• Users see a simple, unified view of the data; if a query cannot be answered, we answer the closest query that we have data for

• Answers are always exact

• Key challenges:

  • defining query proximity (default vs. user-specific)
  • communicating ‘query relaxation’ to users
  • defining and navigating the space of ‘answerable’ queries efficiently

Previous slide

Next slide

Back to first slide

View graphic version