[Semantic Web]Ontology Library Systems

读书笔记 Lee 发表于 2006/3/8 23:47:30 Ontology library systems are an important tool in grouping and re-organizing ontologies for further re-use, integration, maintenance, mapping and versioning. Basically it is a library system that offers various functions for managing, adapting and standardizing groups of ontologies. It should be easily accessible and offer efficient support for re-using existing relevant ontologies and standardizing them based on upper-level ontologies and ontology representation languages.

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[Semantic Web]Changes in Ontologies

读书笔记 Lee 发表于 2006/3/8 23:35:40 According to Gruber (1993), an ontology is a specification of a conceptualization of a domain. Hence, changes in ontologies can be caused by either: changes in the domain; changes in the conceptualization; changes in the specification. Changes in the conceptualization are also happening frequently. It is important to realize that a shared conceptualization of a domain – which is a requirement for information exchange – is not a static specification that is produced once

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[Semantic Web]Two Core Challenges for putting the vision of the Semantic Web into action

读书笔记 Lee 发表于 2006/3/4 12:18:13 First, one has to support the re-engineering task of semantic enrichment for building the Web of meta-data. The success of the Semantic Web greatly depends on the proliferation of ontologies and relational

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[Semantic Web]Monotonic Rules and Nonmonotonic Rules

读书笔记 Lee 发表于 2006/3/4 12:16:39 Predicate logic and its special cases are monotonic in the following sense: if a conclusion can be drawn, it remains valid even if new knowledge becomes available. Nonmonotonic rules are to distinguish from monotonic rules (which are a special case

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[Semantic Web]RDF, OWL and Predicate Logic

读书笔记 Lee 发表于 2006/3/4 12:11:19 The languages of RDF and OWL (Lite and DL) can be viewed as specializations of predicate logic. The correspondence was illustrated by the axiomatic semantics in the form of logical axioms. 删除

[Semantic Web]Reasons for the Popularity and Importance of Logic

读书笔记 Lee 发表于 2006/3/4 12:07:08 • It provides a high-level language in which knowledge can be expressed in a transparent way. And it has a high expressive power. 删除