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SP
1991
IEEE
13 years 12 months ago
A Novel Decomposition of Multilevel Relations into Single-Level Relations
In this paper we give a new decomposition algorithm that breaks a multilevel relation into single-level relations and a new recovery algorithmwhich reconstructs the original multi...
Sushil Jajodia, Ravi S. Sandhu
AAAI
2007
13 years 10 months ago
Approximating OWL-DL Ontologies
Efficient query answering over ontologies is one of the most useful and important services to support Semantic Web applications. Approximation has been identified as a potential...
Jeff Z. Pan, Edward Thomas
CIKM
2008
Springer
13 years 10 months ago
Metric-based ontology learning
Ontology learning is an important task in Artificial Intelligence, Semantic Web and Text Mining. This paper presents a novel framework for, and solutions to, three practical probl...
Hui Yang, Jamie Callan
CIVR
2008
Springer
166views Image Analysis» more  CIVR 2008»
13 years 10 months ago
Non-negative matrix factorisation for object class discovery and image auto-annotation
In information retrieval, sub-space techniques are usually used to reveal the latent semantic structure of a data-set by projecting it to a low dimensional space. Non-negative mat...
Jiayu Tang, Paul H. Lewis
EKAW
2008
Springer
13 years 10 months ago
An Ontology-Centric Approach to Sensor-Mission Assignment
Sensor-mission assignment involves the allocation of sensor and other information-providing resources to missions in order to cover the information needs of the individual tasks in...
Mario Gomez, Alun D. Preece, Matthew P. Johnson, G...