30 search results - page 1 / 6 » Imprecise Data and Knowledge Based OLAP |
ADBIS
2007
Springer
13 years 11 months ago
2007
Springer
VLDB
2005
ACM
13 years 10 months ago
2005
ACM
We extend the OLAP data model to represent data ambiguity, specifically imprecision and uncertainty, and introduce an allocation-based approach to the semantics of aggregation qu...
SIGMOD
2008
ACM
13 years 4 months ago
2008
ACM
OLAP is an important tool in decision support. With the help of domain knowledge, such as hierarchies of attribute values, OLAP helps the user observe the effects of various decis...
DAWAK
2003
Springer
13 years 10 months ago
2003
Springer
On-Line Analytical Processing (OLAP) is a trend in database technology, based on the multidimensional view of data. In this paper we introduce the Cube Presentation Model (CPM), a ...
ICDM
2010
IEEE
13 years 2 months ago
2010
IEEE
-- In this paper, we put forward our approach for answering aggregated queries over imprecise data using domain specific taxonomies. A new concept we call the weighted hierarchical...