Sung-Kook Han

Persistent storage system for efficient management of OWL web ontology

This paper proposes a new persistent storage to efficiently manage OWL Web ontologies. The Semantic Web is recognized as a next direction for progress of the current Web. To realize the Semantic Web, various technologies have been developed. Especially, OWL (Web Ontology Language) is the most important and state-of-the-art technology toward the ideal Semantic Web. However, most of research is being focused on designing and building OWL documents (OWL Ontology). One of the most important issues is how to efficiently and persistently store a very large OWL data into database management systems. In this paper, we propose a persistent storage system to achieve the purpose. This paper describes the performance evaluation result on the load time. The experiment result explicitly shows that our proposal provides more enhanced performance comparing with the existing systems.

Ontology-based composition of web services for ubiquitous computing

Current Web service environment provide connection to individual services but is still deficient in semantic processing technology for the interoperability of Web services. The semantic processing of Web services is a key technology for the dynamic discovery and composition of Web services. Thus, the present study established Web service ontology to support ubiquitous environment and proposed a method of describing Web services in consideration of their functional and semantic aspects. In addition, it implemented a service interlocking and composition system by including a mediator function, which enables the composition of heterogeneous Web services, in the system.

A novel memory-oriented OWL storage system

A novel memory-oriented OWL storage system is proposed. Semantic Web is recognized as the next generation Web and OWL (Web Ontology Language) is one of the most important technologies to achieve the Semantic Web. Even though several memory-oriented storage systems have been proposed to manage and handle OWL documents, they still suffer from low performance. In this paper, we propose a new memory-based OWL storage system to resolve the problem. This paper describes the proposed storage model and shows the experiment and comparison result. The evaluation result shows our storage system provides higher performance than other systems. Therefore, it enables us to develop and provides high quality Semantic Web services.

Hierarchical and dynamic information management framework on grid computing

This paper presents a GridIMF framework that provides support for adaptive grid services in response to the change of resource supplies and demands in a dynamic computing environment. The framework features a 3-tier hierarchical resource management structure. At the top is a global information manager that serves as a service broker between resource requesters and providers. Resource providers form virtual organizations, each of which is controlled by a local resource manager. The resource managers schedule the execution of tasks adaptively for efficiency and fault tolerance according to the dynamic resource availability information. The framework provides a common API through an application proxy. The proxy decouples grid applications from the implementation details of the framework

A GML-Based mobile device trace monitoring system

Recently, the demands on information services have been increasing significantly. This is mainly due to the popularization of computer and mobile telecommunication devices and the rapid improvements on wireless communication technology. Specially, information services and their corresponding management for mobile devices, such as Location Based Service (LBS) and Telematics, become more and more important. However, the standard for geographical space data has not been finalized. Many commercial monitoring systems are using their own independent geographical information without making them compatible to others. Much efforts and resources have been wasted on managing and operating those different monitoring systems’ geographical Information System (GIS) databases. Accordingly, a standard format called GML, based on the most commonly used geographical data format such as DXF, DWG and SHP, has been emerged. In this paper, our work on GML’s visualization in Trace Monitoring Systems (TMS) is described fully. The details on how to trace and manage data moving among different mobile terminals are presented as well.

A Semantically-enhanced Component-based Architecture for Software Composition

Currently, a large amount of information resources are available on the Web. These information resources include not only the data existing on the Web but also dynamic applications, namely, software components distributed all over the Internet. An increasing demand of a proper model and architecture for composition of software components has triggered a huge amount of integration efforts. Most of the known integration approaches ignore the services and operational aspects offered by software components. They are mostly ad hoc and hardly customized solutions. This paper presents a semantically-enhanced model and architecture for composition of software components, specially, software component, basic reusable building blocks of component-based application systems

A Logical Model of Library System towards Knowledge Service

ABSTRACT The ecosystem of the Library has been radically changing in the advent of ubiquitous information service technology. We are already aware of the dig ital library due to popularizing digital information resources and we are impressed with Library 2.0 and Social Semantic Digital Library of user-centered, service-oriented lib rary. We summarize the ultimate goal of the evolution of library systems as knowledge services and propose a logical model of library system for the realization of knowledge services. This local model can be applied for a library framework to harmonize the diverse kno wledge resources, active users with participation and collaboration, the innovation of l ibrary business and ubiquitous information service technologies to achieve the missions of lib rary in knowledge-intensive society.키워드: 라이브러리 2.0, 시맨틱 디지털 라이브러리, 온톨로지, FRBRlibrary 2.0, semantic digital library, ontology, FRBR ********** 원광대학교 도서관 사서(hyunsil@wku.ac.kr) ( 제1저자)마포구립 서강도서관 관장 (csbae@hanmail.net) ( 공동저자)마포구립 서강도서관 전산팀장 (library_joo@hanmail.net) ( 공동저자)원광대학교 컴퓨터공학과 교수(skhan@wku.ac.kr) ( 공동저자)

Biometric Identity Information Integration with Semantics

With the advent of online accessible biometric identity information, how to integrate such sensitive and massive data gathering information has become a fundamental issue. In the last years, cutting-edge biometric identity recognition based on multimodal fusion techniques has reached an important innovation peak, largely due to the maturity of the technology. However, the information on the Web still remains purely syntactic and scarce. As the semantic Web is maturing and data and information integration is growing, harnessing the synergy in both approaches can leverage the lack of widely-accepted standards by fostering the use of semantic Web technologies to represent, store and query metadata and data across bioinformatics datasets. In this paper, we present a semantically- enhanced approach for biometric identity information integration, eventually depicting the forthcomings of our approach.

PSM approach to Web service composition

In this paper we describe a PSM based initiative towards the dynamic composition of Web services, which is achieved by assembling independently deployed components, pluggable in any context that requires its functionality. The ideas used in our approach based on the Unified-Solving Method development Language (UPML), and CBSE research, adapting and extending them to meet the requirements of component composition. The PSM-based composition count with three main features that distinguish our approach from other works in the field. First, it uses a zero-modification composition policy, which enables the construction of application systems out of existing components independently developed in various domains, without any modification of components. Second, it uses a composition mechanism based on mediators and pipe structures. Mediators allow overcoming compositional mismatches without modifying the code of components, preserving its black box and reusability features. Pipes supply a unified pathway that communicates components or mediators with each other transporting the effects of services. Finally, it makes use of a simple Composition Description Language (CDL), which is intended as a mechanism to depict the internal connection between components representing its physical links. The main functionalities of PSM-based composition are illustrated by means of a scenario involving a book price currency conversion

MARCXTM: topic maps modeling of MARC bibliographic information

MARC has played an important role as the standard for the description of bibliographic information for a long time. This paper describes a Topic Maps-based bibliographic framework which is compatible with MARC21 formats and the same expressive power as metadata. The MARC record formats are modeled with aggregation relationships. This paper describes the implementation of this model into MARCXTM. MARCXTM consists of two modules: the implementation of MARC21 specification and the representation of real MARC record data. MARCXTM shows how to realize a compatible framework with MARC21 at the level of metadata within the current information technology environment.