​hozo ​jp/​), which is based on fundamental theories of ontology

​hozo.​jp/​), which is based on fundamental theories of ontology engineering for capturing the essential conceptual structure of the target world. Hozo has more than 1,500 users around the world, and it has been used to implement various ontologies for functional design, oil refinery plant, genomics, medicine, learning and instructional theories, and so on. The features of Hozo include: (1) supporting role representation (Mizoguchi

et al. 2007), (2) visualization of ontologies in a friendly GUI, and (3) distributed development based on the management of dependencies between ontologies (Kozaki et al. 2007a). Hozo’s native language is an XML-based frame language, and ontologies can be exported in OWL and RDF(S). As Vistusertib an example, Matsui et al. (2007) created an ontology on interdisciplinary risk research and environmental systems using the Hozo platform. We also developed a content management system for knowledge sharing and

systematic information retrieval based on the SS ontology (Kozaki et al. 2007b). We used the system VX-809 cost to manually annotate the raw data at Layer 0, with metadata defined in terms of the concepts in the SS ontology using semantic web technology. Users can systematically manage and search the content through the metadata. They can also find related contents by referring to the relationships between the concepts defined in the ontology. Furthermore, they can get an overview of the contents stored at Layer 0 by counting the numbers of contents related to each concept. Currently, we are using only simple annotation data, such as keywords, but in the future, we will improve the system so that we can manage more kinds of content

and use it in a larger scale application. At Layer 1, the SS ontology provides common terms, concepts, and semantics by which users can represent the contents with selleck chemicals minimum ambiguity and interpersonal variation OSBPL9 of expression. This is a typical application of ontology to give semantics for knowledge sharing. For example, Dzbor et al. (2003) developed a semantic web browser named Magpie, which uses ontologies as common thesauri for navigating users to related web pages based on their semantics. The System for Environmental and Agricultural Modelling; Linking European Science and Society (SEAMLESS) integrates project constructs into the model interface ontology and links various environmental models based on those constructs (Athanasiadis et al. 2006). A common feature of these approaches is the use of ontology as an infrastructure for knowledge representation. At Layer 1, it is important that the ontology captures the essential conceptual structure of the target world as generally as possible. Domain-specific terms can be shared across domains by generalizing them and defining them in terms of general domain-independent concepts. Another important factor is the minimization of hidden and implicit knowledge.

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