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» Derived Data Update in Semantic Databases
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DEXA
2008
Springer
154views Database» more  DEXA 2008»
13 years 9 months ago
Approximate Range-Sum Queries over Data Cubes Using Cosine Transform
In this research, we propose to use the discrete cosine transform to approximate the cumulative distributions of data cube cells' values. The cosine transform is known to have...
Wen-Chi Hou, Cheng Luo, Zhewei Jiang, Feng Yan, Qi...
KYOTODL
2000
74views more  KYOTODL 2000»
13 years 9 months ago
On Spatial Information Retrieval and Database Generalization
Spatial data are often stored in a database with the finest level of details. The problem of cartographic generalization of spatial data concerns deriving spatial data with proper...
Xiaofang Zhou, Yanchun Zhang, Sanglu Lu, Guihai Ch...
WEBDB
2009
Springer
100views Database» more  WEBDB 2009»
14 years 2 months ago
Towards Well-Behaved Schema Evolution
We study the problem of schema evolution in the RDF data model. RDF and the RDFS schema language are W3C standards for flexibly modeling and sharing data on the web. Although sch...
Rada Chirkova, George H. L. Fletcher
VLDB
1998
ACM
112views Database» more  VLDB 1998»
13 years 12 months ago
Incremental Clustering for Mining in a Data Warehousing Environment
Data warehouses provide a great deal of opportunities for performing data mining tasks such as classification and clustering. Typically, updates are collected and applied to the d...
Martin Ester, Hans-Peter Kriegel, Jörg Sander...
DILS
2005
Springer
14 years 1 months ago
Data Integration in the Biomedical Informatics Research Network (BIRN)
A goal of the Biomedical Informatics Research Network (BIRN) project sponsored by NCRR/NIH is to develop a multiinstitution information management system for Neurosciences, where e...
Vadim Astakhov, Amarnath Gupta, Simone Santini, Je...