Seung Hwan Kang

Ontology Revision Using the Concept of Belief Revision

One of the problems identified in the development of ontology is the difficulty in maintaining ontology that often faces on issues of changes in knowledge or perception about things within the community of practice. When new information is added, consistency needs to be maintained to ensure it does not cause inconsistency within existing concepts in ontology. This paper discusses the feasibility of using the concept of belief revision as a basis for ontology revision. It is an effort to the use of expansion, revision and contraction operators of belief revision to revise ontology.

Ontology-based collaborative inter-organizational knowledge management network

Knowledge is recognized as one of the most important and valuable management assets because knowledge enables organizations to utilize and develop resources, enhance their competitiveness and develop sustainable competitive advantage. A number of knowledge management approaches have been developed with the purpose of managing organizational knowledge.

Ontology Revision on the Semantic Web: Integration of belief revision theory

Ontology is used to define terms and relations on the semantic Web to form well-structured semantics of Web resources. Ontology revision refers to the process of updating ontology to ensure changes are made in a consistent manner. Belief revision theory deals with approaches to ensure consistency in the belief sets is maintained when beliefs need to be revised. This paper discusses the integration of belief revision theory to the ontology reengineering method as a means to ensure consistency in ontology revision

To provide guidelines for designing new mediation tools and identifying matching technique: a classification framework approach

Ontology matching can be defined as the process of discovering similarities between two ontologies and it can be processed exploiting a number of different techniques. To provide a common conceptual basis, researchers have started to develop classifications to distinguish them. The most significant one is the classification proposed by Shvaiko and Euzenat to compare different existing ontology mediation systems as well as to design a new one. As the classification contains some improper identifications and vague categories, we therefore propose a design and input-specific classification framework of ontology matching techniques to address the above problems based on the findings of the literature survey. The framework provides not only a clear guideline on designing new mediation tool but also an effective method to identify the type of the matching technique and its related executive approach simply by comparing input of mediation system with the input layer in the proposed framework.

Developing ontology revision framework: A case study on the use of the coherence theory for semantic shopping mall

Why is ontology revision important? Very often, ontology exists in a particular period of timeline is often designed based on the purpose of a domain of interest at that instance of time. However over time, ontology needs to be revised due to changes in content, environment, requirements, or even structural representation. As a result, revision and updating of necessary components in the pre-defined ontology is unavoidable. When this happens, it is important to ensure that revision is conducted in a consistent manner so that it does not result in unforseen redundancies and inconsistencies. Any revision performed must be accompanied by a rational change to be dealt with from the consistency perspective. This paper presents an ontology revision approach to achieve this aim based on the coherence theory model of belief revision theory. An application scenario of semantic shopping mall is used to demonstrate the approach.

Development of a web-based student enquiry system: integration of ontology and case-based reasoning

This paper discusses the development of a web-based student enquiry system using techniques in Case-Based Reasoning (CBR) combined with advances in ontology. The system functions as an online enquiry front-desk to allow prospective students to find out if they are eligible for admission to a postgraduate course in an Australian University. Ontology is applied to ensure explicit specifications of concept and definition of terminology can be achieved in the system. CBR technique is applied to achieve the query by applying and adapting past queries.

Ontology-driven accounting information system: case study of the stock exchange of Thailand

Accounting information systems have improved conventional information control. Due to corporate meltdowns, corporate governance has come under greater scrutiny to improve practices of managing, retrieving and extracting accounting information within organizations. This paper introduces a framework for an ontology-driven accounting information system as a mean to share information in line of common agreement. The proposed approach contributes to weakening of asymmetric information and information transparency problems.