• 한국CDE학회논문집
• /
• 제13권3호
• /
• pp.163-174
• /
• 2008

In this paper, for integrating of data on car parts we model information of parts that PDM system manages. Ontology of car parts applies existing ontology mapping research to integrate into car ontology. We propose a method for semantic integration of PLM object of MEMPHIS based on the integrated ontology. Through our method, we introduce C# ontology model to apply existing C# applications with ontology. We also classify ontology integration into three through examples and explain them. While semantically integrating PLM objects based on the integrated ontology, we explain the need for change of PLM object type and describe the process of change for PLM object type by examples.

• Asia pacific journal of information systems
• /
• 제16권4호
• /
• pp.151-178
• /
• 2006

The objective of this research is to develop a formal framework and methodology to facilitate real-time data integration, thus enabling semantic interoperability among distributed and heterogeneous information systems. The proposed approach is based on the concepts of "ontology" and "semantic mediators." An ontology is developed and used to capture the intension (including structure, integrity rules and meta-properties) of the database schema. We also develop the agent communication protocol for semantic reconciliation, which is based on the theory of speech acts and agent communication language. This protocol is used by a set of semantic mediators, which automatically detect and resolve various semantic conflicts at the data- and schema-levels by referring to the ontology. A mediation-based query processing technique is developed to provide uniform and integrated access to the multiple heterogeneous information sources. Prototype tools are being implemented to provide proof of concept for this work.

• 농촌계획
• /
• 제12권4호
• /
• pp.53-61
• /
• 2006

Rural amenity resources consist of natural, cultural and social resources. Some of resources have been surveyed in other institutes and organizations and information system about these resources has been constructed. Integrating with information of existing system or database is helpful to produce useful rural amenity resources information to users. This integration of distributed information is based on semantic integration. In this paper, we used ontology for semantic integration and introduced the method of external information integration using ontology. We designed ontology table to represent ontology in database and integrated distributed information using ontology. To examine the improvement of information service efficiency and the applicability, rural amenity resources information and tourist attraction information database were constructed and integrated. Also, the information service efficiency with information integration was evaluated using recall ratio and compared to the information service efficiency without information integration.

• 한국지능정보시스템학회:학술대회논문집
• /
• 한국지능정보시스템학회 2005년도 공동추계학술대회
• /
• pp.295-303
• /
• 2005

Semantic Web and its related technologies have been opening the era of information sharing via Web. In the meantime, there are several huddles to overcome toward the new era and one of the major huddles is information integration issue unless we build and use a single unified but huge ontology which address everything in the world. Particularly in e-business area, information integration problem must be a great concern in search and comparison of products from various internet shopping sites and e-marketplaces. To overcome such an information integration problem, we propose an ontology driven mapping algorithm between heterogeneous product classification and description frameworks. We also perform comparative evaluation of the proposed mapping algorithm against a well-known ontology mapping tool, PROMPT.

• 방송공학회논문지
• /
• 제11권1호
• /
• pp.42-53
• /
• 2006

본 논문은 다양한 형식으로 구성된 멀티미디어 데이터베이스를 의미적 통합 (Semantic Integration)/검색 (Semantic Retrieval) 하기 위한 멀티미디어 온톨로지 구성 방법에 대해 기술한다. 우리는 이를 위해 멀티미디어 콘텐츠를 기술하고 있는 대표적 표준인 MPEG-7 Multimedia Description Schemes(MDS)와 TV-Anytime 의 개념에 기반한 통합 온톨로지를 구성하고 Web Ontology Language(OWL)를 이용하여 다시 표현한다. 그리고 현재 다른 개념 및 다른 형태의 온톨로지와 우리가 구성한 통합 온톨로지와 의 상호운용성에 대해 기술한다. 마지막으로, 통합 멀티미디어 온톨로지를 이용한 의미적 검색 방법에 대해 기술한다.

• Journal of Ship and Ocean Technology
• /
• 제9권3호
• /
• pp.33-42
• /
• 2005

As the networks connect the world, enterprises tend to move manufacturing activities into virtual spaces. Since different software applications use different data terminology, it becomes a problem to interoperate, interchange, and manage electronic data among heterogeneous systems. It is said that approximately one billion dollar has been being spent yearly in USA for product data exchange and interoperability. As commercial CAD systems have brought in the concept of design feature for the sake of interoperability, terminologies of design features need to be harmonized. In order to define design feature terminology for integration, knowledge about feature definitions of different CAD systems should be considered. STEP standard have attempted to solve this problem, but it defines only syntactic data representation so that semantic data integration is not possible. This paper proposes a methodology for integrating modeling features of CAD systems. We utilize the ontology concept to build a data model of design features which can be a semantic standard of feature definitions of CAD systems. Using feature ontology, we implement an integrated virtual database and a simple system which searches and edits design features in a semantic way.

• 한국전자거래학회지
• /
• 제10권4호
• /
• pp.19-33
• /
• 2005

본 연구에서는 시맨틱 웹을 구성할 수 있도록 하는 지식표현, 온톨로지, 에이전트를 통해 급변하는 전자거래 환경을 극복하고 이질적이고 분산되어 있는 정보들을 통합할 수 있도록 하기 위한 방법론을 제시하고자 한다. 이를 위해 모델링의 기반이 되는 구문론적/의미론적 통합 및 에이전트의 운용방법론에 대해 논하며, 메타 모델링에 바탕을 두는 온톨로지의 구축에 중점을 두고 설명한다. IRDS (Information Resource Dictionary Standard) 프레임워크에 기반한 구조에 따라 OWL(Web Ontology Language)을 사용하여 온톨로지를 구체화하며, 프로세스 표현을 위해 PSL(Process Specification Language)-ontology의 용어들을 중간 계층으로 구성하여 차용한 예를 제시한다. 제시한 프레임워크를 통해 정보 자원들과 비즈니스 프로세스를 정의하고 공유하며 관리함으로써 중복성과 불일치성을 제거할 수 있을 것이다.

• Journal of information and communication convergence engineering
• /
• 제14권2호
• /
• pp.97-105
• /
• 2016

With the increasing demand for interoperability among existing learning resource systems in order to enable the sharing of learning resources, such resources need to be annotated with ontologies that use different metadata standards. These different ontologies must be reconciled through ontology mediation, so as to cope with information heterogeneity problems, such as semantic and structural conflicts. In this paper, we propose an ontology-mapping technique using Semantic Web Rule Language (SWRL) to generate semantic mapping rules that integrate learning resources from different systems and that cope with semantic and structural conflicts. Reasoning rules are defined to support a semantic search for heterogeneous learning resources, which are deduced by rule-based inference. Experimental results demonstrate that the proposed approach enables the integration of learning resources originating from multiple sources and helps users to search across heterogeneous learning resource systems.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 2005년도 춘계학술대회 논문집
• /
• pp.181-186
• /
• 2005

In collaborative environment, it is necessary that the participants in collaboration should share the same understanding about the semantics of terms. For example, they should know that 'Part' and 'Item' are different word-expressions for the same meaning. In this paper, we consider sharing between CAD and PDM data. In order to handle such problems in information sharing, an information system needs to automatically recognize that the terms have the same semantics. Serving this purpose, the semantic mapping logic and the ontology based mapper system is described in this paper. In the semantic mapping logic topic, we introduce our logic that consists of four modules: Character Matching, Instance Reasoning, definition comparing and Similarity Checking. In the ontology based mapper, we introduce the system architecture and the mapping procedure.

• 한국CDE학회논문집
• /
• 제9권2호
• /
• pp.167-174
• /
• 2004

As the networks connect the world, enterprises tend to move manufacturing activities into virtual spaces. Since different applications use different data terminology, it becomes a problem to interoperate, interchange, and manage electronic data among different systems. According to RTI, approximately one billion dollar has been being spent yearly for product data exchange and interoperability. As commercial CAD systems have brought in the concept of design feature for the sake of interoperability, terminologies of design feature need to be harmonized. In order to define design feature terminology for integration, knowledge about feature definitions of different CAD systems should be considered. STEP (Standard for the Exchange of Product model data) have attempted to solve this problem, but it defines only syntactic data representation so that semantic data integration is unattainable. In this paper, we utilize the ontology concept to build a data model of design feature which can be a semantic standard of feature definitions of CAD systems. Using feature ontology, we implement an integrated virtual database and a simple system which searches and edits design features in a semantic way. This paper proposes a methodology for integrating modeling features of CAD systems.