Partially shared views: a scheme for communicating among groups that use different type hierarchies
ACM Transactions on Information Systems (TOIS)
Gram: a graph data model and query languages
ECHT '92 Proceedings of the ACM conference on Hypertext
A translation approach to portable ontology specifications
Knowledge Acquisition - Special issue: Current issues in knowledge modeling
RQL: a declarative query language for RDF
Proceedings of the 11th international conference on World Wide Web
Answering queries using views: A survey
The VLDB Journal — The International Journal on Very Large Data Bases
Promptdiff: a fixed-point algorithm for comparing ontology versions
Eighteenth national conference on Artificial intelligence
Ontologies for corporate web applications
AI Magazine
The PROMPT suite: interactive tools for ontology merging and mapping
International Journal of Human-Computer Studies
A reference ontology for biomedical informatics: the foundational model of anatomy
Journal of Biomedical Informatics - Special issue: Unified medical language system
From mappings to modules: using mappings to identify domain-specific modules in large ontologies
Proceedings of the sixth international conference on Knowledge capture
Model-theoretic inseparability and modularity of description logic ontologies
Artificial Intelligence
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One of the original motivations for ontology research was the belief that ontologies can help with reuse in knowledge representation. However, many of the ontologies that are developed with reuse in mind, such as standard reference ontologies and controlled terminologies, are extremely large, while the users often need to reuse only a small part of these resources in their work. Specifying various views of an ontology enables users to limit the set of concepts that they see. In this chapter, we develop the concept of a Traversal View , a view where a user specifies the central concept or concepts of interest, the relationships to traverse to find other concepts to include in the view, and the depth of the traversal. For example, given a large ontology of anatomy, a user may use a Traversal View to extract a concept of Lung and organs and organ parts that surround the lung or are contained in the lung. We define the notion of Traversal Views formally, discuss their properties, present a strategy for maintaining the view through ontology evolution and describe our tool for defining and extracting Traversal Views.