Example: Weather Pattern Analysis
- a map with about 3,000 weather probes scattered in B.C.
- daily data for temperature, precipitation, wind velocity, etc.
- concept hierarchies for all attributes
- a map that reveals patterns: merged (similar) regions!
- interactive analysis (drill-down, slice, dice, pivot, roll-up)
- fast response time
- minimizing storage space used
Challenge: a merged region may contain hundreds of “primitive” regions (polygons)