In recent years, there has been significant progress in developing tools for debugging and repairing Description Logic (DL)-based ontologies with erroneous consequences. However, these tools place more emphasis on explaining why the consequences follow from the ontology rather than on eliminating them. Another shortcoming in existing tools is that there is no common approach for eliminating or ...

In this paper we outline the design and present a sample of the REBECA bilingual lexical-conceptual database constructed by linking two monolingual lexical resources in which a set of lexicalized concepts of the North-American English database, the Princeton WordNet (WN.Pr) synsets, is aligned with its corresponding set of lexicalized concepts of the Brazilian Portuguese database, the Brazilian...

Ontologies have been widely accepted as the primary method of representing knowledge in the Semantic Web. Knowledge Elicitation (KE) is usually one of the first steps in building ontologies. A number of ontology editors such as Protégé have been developed to assist users in building ontologies efficiently. However, traditional KE techniques, such as card sorting and laddering, are not yet suppo...

We describe OntoComP, a Protégé 4 plugin that supports ontology engineers in completing OWL ontologies. More precisely, OntoComP supports an ontology engineer in checking whether an ontology contains all the relevant information about the application domain, and in extending the ontology appropriately if this is not the case. It acquires complete knowledge about the application domain efficient...

In recent years, numerous studies have been attempted to exploit ontology in the area of ubiquitous computing. Especially, some kinds of ontologies written in OWL are proposed for major issues in ubiquitous computing such like context-awareness. OWL is recommended by W3C as a descriptive language for representing ontology with rich vocabularies. However, developers struggle to design ontology u...

This paper describes the PROTEGE-II environment which supports the construction of knowledge-base systems from reusable components. To assist developers with reuse, the terminologies of both problem-solving methods and knowledge bases should be described as formal ontologies. To connect pre-existing methods to new domains and knowledge bases, we dejine declarative mapping relations, which we us...

Article history: Received 21 December 2013 Available online 28 February 2014 The value of mentoring is growing substantially as organizations take a renewed interest in employee development to better survive in the dynamic and competitive market today. In the wake of this renewed interest, this meta-analysis was conducted to quantitatively review the multi-level antecedents (e.g., individual, r...

We present RAT-OWL, a software system for reasoning about typicality in preferential Description Logics. It is implemented in the form of a Protégé 4.3 Plugin and it allows the user to reason in a nonmonotonic extension of Description Logics based on the notion of “rational closure”. This logic extends standard Description Logics in order to express “typical” properties, that can be directly sp...

This paper presents a Protégé plug-in which enables end-users to design and instantiate an OWL knowledge base from multiple existing relational databases. This approach is inspired by data integration and exchange solutions and presents some functionalities which facilitate the development and maintenance of Semantic Web applications from frequently updated and domain-concerned databases.