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» Extracting Ontologies from Relational Databases
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EDBT
2009
ACM
136views Database» more  EDBT 2009»
14 years 4 months ago
Finding frequent co-occurring terms in relational keyword search
Given a set Q of keywords, conventional keyword search (KS) returns a set of tuples, each of which (i) is obtained from a single relation, or by joining multiple relations, and (i...
Yufei Tao, Jeffrey Xu Yu
CIARP
2004
Springer
14 years 3 months ago
Unsupervised Learning of Ontology-Linked Selectional Preferences
We present a method for extracting selectional preferences of verbs from unannotated text. These selectional preferences are linked to an ontology (e.g. the hypernym relations foun...
Hiram Calvo, Alexander F. Gelbukh
PKDD
2000
Springer
151views Data Mining» more  PKDD 2000»
14 years 1 months ago
Discovery of Characteristic subgraph Patterns Using Relative Indexing and the Cascade Model
: Relational representation of objects using graphs reveals much information that cannot be obtained by attribute value representations alone. There are already many databases that...
Takashi Okada, Mayumi Oyama
AGILE
2007
Springer
184views GIS» more  AGILE 2007»
14 years 4 months ago
Towards Spatial Reasoning in the Semantic Web: A Hybrid Knowledge Representation System Architecture
Environmental databases store a wide variety of data from heterogeneous sources which are described with domain-specific terminologies and refer to distinct locations. In order to ...
Rolf Grütter, Bettina Bauer-Messmer
NAR
2002
86views more  NAR 2002»
13 years 9 months ago
S/MARt DB: a database on scaffold/matrix attached regions
S/MARt DB, the S/MAR transaction database, is a relational database covering scaffold/matrix attached regions (S/MARs) and nuclear matrix proteins that are involved in the chromos...
Ines Liebich, Jürgen Bode, Matthias Frisch, E...