1265 search results - page 189 / 253 » Metadata management and relational databases |
KDD
2006
ACM
15 years 10 months ago
2006
ACM
Ontologies represent data relationships as hierarchies of possibly overlapping classes. Ontologies are closely related to clustering hierarchies, and in this article we explore th...
KDD
2005
ACM
15 years 10 months ago
2005
ACM
In this paper, we discuss a problem of finding risk patterns in medical data. We define risk patterns by a statistical metric, relative risk, which has been widely used in epidemi...
KDD
2003
ACM
15 years 10 months ago
2003
ACM
Recent proposals to apply data mining systems to problems in law enforcement, national security, and fraud detection have attracted both media attention and technical critiques of...
SIGMOD
2003
ACM
15 years 10 months ago
2003
ACM
One of the critical deficiencies of SQL is lack of support for ndimensional array-based computations which are frequent in OLAP environments. Relational OLAP (ROLAP) applications ...
WWW
2010
ACM
15 years 4 months ago
2010
ACM
We study online social networks in which relationships can be either positive (indicating relations such as friendship) or negative (indicating relations such as opposition or ant...