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» Data Aggregation Sets in Adaptive Data Model
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MSWIM
2005
ACM
16 years 12 days ago
Magnetic diffusion: disseminating mission-critical data for dynamic sensor networks
Envisioning a new generation of sensor network applications in healthcare and workplace safety, we seek mechanisms that provide timely and reliable transmissions of mission-critic...
Hsing-Jung Huang, Ting-Hao Chang, Shu-Yu Hu, Polly...
VLDB
1998
ACM
149views Database» more  VLDB 1998»
15 years 11 months ago
Incremental Maintenance for Materialized Views over Semistructured Data
Semistructured data is not strictly typed like relational or object-oriented data and may be irregular or incomplete. It often arises in practice, e.g., when heterogeneous data so...
Serge Abiteboul, Jason McHugh, Michael Rys, Vasili...
EDM
2010
129views Data Mining» more  EDM 2010»
15 years 8 months ago
Skill Set Profile Clustering: The Empty K-Means Algorithm with Automatic Specification of Starting Cluster Centers
While students' skill set profiles can be estimated with formal cognitive diagnosis models [8], their computational complexity makes simpler proxy skill estimates attractive [...
Rebecca Nugent, Nema Dean, Elizabeth Ayers
DAWAK
2005
Springer
16 years 11 days ago
Automatic Selection of Bitmap Join Indexes in Data Warehouses
The queries defined on data warehouses are complex and use several join operations that induce an expensive computational cost. This cost becomes even more prohibitive when querie...
Kamel Aouiche, Jérôme Darmont, Omar B...
DEXA
2009
Springer
151views Database» more  DEXA 2009»
16 years 1 months ago
Automatic Extraction of Ontologies Wrapping Relational Data Sources
Describing relational data sources (i.e. databases) by means of ontologies constitutes the foundation of most of the semantic based approaches to data access and integration. In sp...
Lina Lubyte, Sergio Tessaris