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» A Web Query System for Heterogeneous Government Data
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146
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EFDBS
2003
15 years 3 months ago
Four-Level-Architecture for Closure in Interoperability
A definition of types in an information system is given from ld abstractions through data constructs, schema and definitions to physical data values. Category theory suggests tha...
B. Nick Rossiter, Michael A. Heather
ER
2004
Springer
103views Database» more  ER 2004»
15 years 7 months ago
Querying Heterogeneous Spatial Databases: Combining an Ontology with Similarity Functions
This paper uses a knowledge-based approach to querying heterogeneous spatial databases based on an ontology and conceptual and attribute similarities. The ontology, which may be in...
Mariella Gutiérrez, M. Andrea Rodríg...
111
Voted
ICEIS
2002
IEEE
15 years 6 months ago
Modeling Relational Data by the Adjacency Model
: The World-Wide-Web contains data that cannot be constrained by a schema. Another source for such data is heterogenous corporate systems which are integrated in order to get bette...
Jari Töyli, Matti Linna, Merja Wanne
SIGMOD
2011
ACM
198views Database» more  SIGMOD 2011»
14 years 4 months ago
U-MAP: a system for usage-based schema matching and mapping
This demo shows how usage information buried in query logs can play a central role in data integration and data exchange. More specifically, our system U-Map uses query logs to g...
Hazem Elmeleegy, Jaewoo Lee, El Kindi Rezig, Moura...
101
Voted
WWW
2006
ACM
16 years 2 months ago
Mining clickthrough data for collaborative web search
This paper is to investigate the group behavior patterns of search activities based on Web search history data, i.e., clickthrough data, to boost search performance. We propose a ...
Jian-Tao Sun, Xuanhui Wang, Dou Shen, Hua-Jun Zeng...