Seung-Jin Kwak

A Knowledge Map Based on a Keyword-Relation Network by Using a Research Paper Database in the Computer Engineering Field

A knowledge map, which has been recently applied in various fields, is discovering characteristics hidden in a large amount of information and showing a tangible output to understand the meaning of the discovery. In this paper, we suggested a knowledge map for research trend analysis based on keyword-relation networks which are constructed by using a database of the domestic journal articles in the computer engineering field from 2000 through 2010. From that knowledge map, we could infer influential changes of a research topic related a specific keyword through examining the change of sizes of the connected components to which the keyword belongs in the keyword-relation networks. In addition, we observed that the size of the largest connected component in the keyword-relation networks is relatively small and groups of high-similarity keyword pairs are clustered in them by comparison with the random networks. This implies that the research field corresponding to the largest connected component is not so huge and many small-scale topics included in it are highly clustered and loosely-connected to each other. our proposed knowledge map can be considered as a approach for the research trend analysis while it is impossible to obtain those results by conventional approaches such as analyzing the frequency of an individual keyword.

A Study on Cooperation Networks for Multicultural Information Services

The purpose of this paper is to construct a cooperation network for multicultural information services. It is suggested that a network for multicultural information helps those who limited information resources. Following investigation of the related information resources-422 online sites in 395 groups-it was found that the activity of non-public groups is higher than that of public groups and that all related groups offer various information services to multicultural people: education (24.5%), culture (18.4%), human rights (12.7%), general life (8.9%), and etc. The paper suggests the sharing of the information of internal related groups and collaboration with th embassies and cultural centers of East Asian country in order to construct a multicultural information service.

Application of Performance Indicators for Digital Library Services Focusing on the Analysis of ISO/DIS 11620 : 2007

The purpose of this study is to examine the ISO/DIS 11620 : 2007(library performance indicators) in terms of structures, objectives, and BSC, and to apply the selected performance indicators to the digital library services for the case of `B` University in Korea. Standardization of library statistics and of qualify or performance measures for libraries is carried on within ISO in the frame of the TC46/SC8/WG4. While the first edition of ISO 11620 grouped the indicators as to service areas, the ISO/DIS 11620:2007 uses the structure of the balanced scorecard(BSC). For the study, 44 performance indicators are grouped into traditional, hybrid. and digital libraries according to the characteristics of them. Ten selected Performance indicators, which are classified into digital libraries, are verified for the applicability.

A Study on Metadata for Sharing the Information of Earth Observation

The purpose of this study is to design the metadata for sharing and efficiently using the informations of Earth Observations in Korea. Recently the GEO(Group on Earth Observations) has been starting to manage all nation`s informations in a way that benefits the environment as well as humanity by taking a pulse of the plants. For that reason, we have to construct the infra-system to manage and integrate the 12 social benefit areas in Korea; disaster, health, energy, climate, water, biodiversity, agriculture, forest, ocean, space information and geographical information system(GIS). But these informations have only been managed with varied metadatas in each area of observation, and then it is difficult to integrate varied informations. In this study, we solve the problem with meta-metadata.

The Development of Performance Indicators for the Institution of Information Transfer Based on BSC and the Analysis of Their Importance

The purpose of this study is to focus on developing the performance indicators for the distribution of scholarly information based on BSC and to analyze the importance of the performance indicators against the specialists. From the case studies on performance indicators both at home and abroad four viewpoints(information resource, information service, user, and economy) were derived. In addition. the core success factors(CSF) and key performance indicators(KPI) were extracted from the viewpoints. Four viewpoints are composed of 12 CSF items and 31 KPI items. In order to analyze the weight of the performance indicators. questions were thrown to the specialists in universities and research institutes. For the method of analysis, analytic hierarchy process(AHP) was adopted. As a result, the analysis showed that the user viewpoint, information service viewpoint, information resource viewpoint and economic viewpoint are in the order of their importance.

A Personalized Retrieval System Based on Classification and User Query

In this paper, we describe a developmental system for establishing personal information tendency based on user queries. For each query, the system classified it based on the category information using a kNN classifier. As category information, we used DDC field which is already assigned to each record in the database. The system accumulates category information for all user queries and the user`s personalized feature for the target database. We then developed a personalized retrieval system reflecting the personalized feature to produce search result. Our system re-ranks the result documents by adding more weights to the documents for which categories match with the user`s personalized feature. By using user`s tendency information, the ambiguity problem of the word could be solved. In this paper, we conducted experiments for personalized search and word sense disambiguation (WSD) on a collection of Korean journal articles of science and technology arena. Our experimental result and user`s evaluation show that the performance of the personalized search system and WSD is proved to be useful for actual field services.

A Study on the Annotation of Digital Content

Tools are needed to have access to more effective information and to select it in the environment of digital information where information pours in. and some of the advanced techniques to make up these tools are metadata and annotation. Annotation additionally records the marks for the supplementary explanation of and emphasis on a specific part of the original text and kas more various merits than metadata in terms of the search and use of digital resources. This research aims at suggesting methods that annotation. which has a range of functions including access to information. its reuse and sharing in the digital surroundings of late, can be applied to digital contents such as web services, digital libraries and electronic books. As to the research method, the case studies of annotation systems applied to web services and digital libraries have been carried out, and the metadata formation of the systems has been analyzed.

A Study on Developing Metadata Elements and Database of the Science Information for Youth

본 연구는 메타데이터 시스템이 가지는 효율성을 기반으로 청소년을 대상으로 하는 인터넷 상의 과학정보 메타데이터 요소 추출 및 데이터베이스 시스템을 구축하여 이용자 중심의 타당성 평가를 목적으로 한다. 청소년 과학정보 메타데이터 기술요소 추출은 더블린코어 요소를 기준으로 국내외 주요 메타데이터 프로젝트의 연구 자료를 비교하여 6개의 필수요소와 4개의 부가요소로 구성된 청소년 대상 과학정보 메타데이터 기술요소를 도출하였다. 이를 토대로 청소년을 대상으로 하는 과학정보 메타데이터 데이터베이스를 구축하였으며, 이용자 중심의 평가를 통해 피실험자 대부분이 과학문제 해결에 도움이 된다고 하였다. 이는 본 연구에서 제시하는 청소년 과학정보 메타데이터 서비스 시스템이 청소년들의 과학정보에 대한 접근성을 향상시킬 수 있음을 보여준다고 할 수 있다.This study intends to design a metadata service system of the science information for youth on the web based on the efficiency of the metadata system. Metadata scheme of the science information for youth on the web has been developed and designed metadata collection on the basis of the previously designed classification system. Metadata scheme of the science information for youth, which is consisted of six essential elements and four additional elements, has been brought out, compared to not only Dublin Core Metadata Element Set, but also the main studies related to domestic and foreign metadata projects. Based on the results of it, metadata database of the science information has been designed and it is expected to be applicable to metadata service system of the science information for youth on the web.

An Experimental Study on the Technical Term Based Analysis of University Library Collection: With a Focus on Computer Field

The collections of university libraries such as books in academic disciplines and dissertations are much used to support education of students and research activities of faculty members. Most of such materials naturally contain unique terms frequently and exclusively used in specific academic disciplines. Therefore, it is possible to infer the latest research trend in or correlations among various disciplines by analyzing those terms. In this study, the trend was analyzed by extracting technical terms from the metatadata for collections in the field of computer science of two university libraries in Korea. By comparing these terms with the trend of terms which appeared in dissertations and domestic scholarly articles, the relation between collections of university libraries and research trend in this particular academic field was analyzed.

A Study on Establishment of Information Service Policy of National Digital Library

For National Digital Library(NDL) to properly perform it`s ideal function as a representative digital library in Korea, information service policy considering the IT and Ubiquitous environment shall be established. Information service policy of NDL was established with focus group interviews and a survey targeting the users and librarians in this study. To raise the propriety of information service policy, final draft of information service policy was proposed after the interim evaluation targeting the concerned parties of NDL and 1st & 2nd verification by external specialists and the consultation group. In this manner, vision, mission, goal, objective, strategy, etc of information service policy of NDL were proposed. Information service policy of NDL proposed in this study not only proposes the fact and base to other digital libraries that wishes to establish the information service policy and arrange detailed guidelines as a case study but also secures the direction and vision of global information service policy of NDL. Furthermore, it will contribute for NDL to build its reputation as a world renowned digital library.