2079 search results - page 321 / 416 » Research Problems in Data Warehousing |
233
click to vote
SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Schema mappings are logical assertions that specify the relationships between a source and a target schema in a declarative way. The specification of such mappings is a fundamenta...
194
click to vote
WSDM
2010
ACM
16 years 3 months ago
2010
ACM
We consider a set of views stating possibly conflicting facts. Negative facts in the views may come, e.g., from functional dependencies in the underlying database schema. We want ...
197
click to vote
WSDM
2009
ACM
16 years 1 months ago
2009
ACM
Text streams are becoming more and more ubiquitous, in the forms of news feeds, weblog archives and so on, which result in a large volume of data. An effective way to explore the...
225
click to vote
PAKDD
2009
ACM
16 years 1 months ago
2009
ACM
It is a challenging and important task to retrieve images from a large and highly varied image data set based on their visual contents. Problems like how to fill the semantic gap b...
209
click to vote
UIC
2009
Springer
16 years 1 months ago
2009
Springer
Abstract. In the last years, techniques for activity recognition have attracted increasing attention. Among many applications, a special interest is in the pervasive e-Health domai...