08421 Working Group: Imprecision, Diversity and Uncertainty: Disentangling Threads in Uncertainty Management

The motivation of the workgroup was to couple uncertainty management with the notion of change. This encompassed integration, aggregation and mining upon uncertain data. Target questions were measuring uncertainty and defining and measuring the quality of uncertain data. We have left out ambiguousness (in the sense of unclear terms and vagueness) as an orthogonal issue. Uncertainty management in the context of reasoning (cf. among else [GS98]) has been a source of inspiration, since that area encompasses appropriate theoretical underpinnings for addressing some of the questions studied here.