Download OLAP Over Uncertain and Imprecise Data
Document related concepts
no text concepts found
Transcript
Uncertainty
Measure value is modeled as a probability
distribution function over some base domain
e.g., measure Brake is a pdf over values {Yes,No}
sources of uncertainty: measures extracted from text
using classifiers
Adapt well-known concepts from statistics to
derive appropriate aggregation operators
Our framework and solutions for dealing with
imprecision also extend to uncertain measures
