• Journal of the Korean Data and Information Science Society
• /
• v.19 no.4
• /
• pp.1269-1279
• /
• 2008

Data mining is the technique to find useful information in huge databases. One of the well-studied problems in data mining is exploration for association rules. An association rule technique finds the relation among each items in massive volume databases by several interestingness measures. An important and useful classification scheme of interestingness measures may be based on user-involvement. This results in two categories - objective and subjective measures. This paper present some relative interestingess measures to compare with degrees of association for two groups. A comparative study with some relative interestingness measures is shown by numerical example. The results show that the relative net confidence is the best relative interestingness measure.

• Proceedings of the Korean Information Science Society Conference
• /
• 2001.04b
• /
• pp.142-144
• /
• 2001

응용 환경에서 동시에 이종의 모델을 지원하는 다수의 데이터베이스에 대하여 이들을 동시에 사용하거나 서로 간의 데이터 이전을 위해서는 스키마 변환과 질의 변환이 필요하다. 본 논문에서는 이종 모델 데이터베이스간의 상호 질의를 위해, 1) 관계형 스키마를 객체지향 스키마로 변환하고, 2) 관계 데이터베이스의 데이터를 객체 데이터베이스로 이전하며, 3)사용자의 관계형 질의를 객체 데이터베이스에서 인식할 수 있도록 변환하는 수행하는 중개자(Mediator)의 설계에 대해 기술한다. 제안된 중개자는 관계형 SQL 질의를 받아서, 데이터의 위치에 다랄 적절한 질의로 변환한 후, 관계 데이터베이스와 객체 데이터베이스에 있는 데이터를 자동으로 처리한다. 결과적으로, 중개자는 서로 다른 데이터베이스를 동시에 사용할 수 있는 기초가 될 것이다.

• Bioinformatics and Biosystems
• /
• v.1 no.2
• /
• pp.95-98
• /
• 2006

Recent proteomic studies of protein domains require high-throughput and systematic approaches. Since most experiments using protein domains, the modules of protein-protein interactions, require gene cloning, the first experimental step should be retrieving DNA sequences of domain encoding regions from databases. For a large scale proteomic research, however, it is a laborious task to extract a large number of domain sequences manually from several inter-linked databases. We present a new methodology to retrieve DNA sequences of domain encoding regions through automatic database cross-referencing. To extract protein domain encoding regions, it traverses several inter-connected database with validation process. And we applied this method to retrieve all the EGF domain encoding DNA sequences of homo sapiens. This new algorithm was implemented using Python library PAMIE, which enables to cross-reference across distinct databases automatically.

• Journal of the Korean Society for Library and Information Science
• /
• v.34 no.3
• /
• pp.61-76
• /
• 2000

A study on the remote library users showed that remote users preferred online databases and internet as information resources because of easy access and easy of use. However, they have used books and journals, which are printed resources, as main information resources because online databases and internet cannot satisfy their information needs. Also, 86.7 percent of remote users consider library services as an important issue to choose a distance learning program, and remote users extremely motivated by their professors to use library so that there are needs to have partnership between distance learning programs and library services. Finally, remote users consider authority and accuracy and contents of obtained information as important issues for their information rather than design of the databases, so that library should secure more digitalized information for remote users needs. This study is to contribute to improve quality of information services for remote users, however, it is not thoroughgoing enough, and there should be successive researches in the future.

• Journal of Information Management
• /
• v.43 no.3
• /
• pp.23-41
• /
• 2012

Citation analysis studies have reported many problems associated with data coverage problems common to popular citation databases such as Web of Science(WoS). In addition, the studies that analyzed citation patterns of Korean publications found that up to 75% of references in Korean publications were to international publications. As a first step in investigating the international coverage of WoS database, the study investigated the effect of adding citation data from Korea Science Citation Database(KSCD) to the impact factors and journal rankings of the journals listed in Journal Citation Reports. Specifically, the study mined the reference data from top 5 Korean Library and Information Science(KLIS) journals to recompute the impact factors reported in JCR 2009. Since the resulting journal rankings did not significantly differ from JCR 2009 rankings except for minor ranking changes, we analyzed additional citation data from 45 computer science and electrical engineering journals. Although the overall ranking difference was not statistically significant, one of the ranking partitions showed significant change. Such study findings despite its limited data sample suggest the potential impact of non-Western citation databases such as KSCD to bibliometric indicators provided by popular citation databases like WoS.

• Journal of the Korean Data and Information Science Society
• /
• v.15 no.4
• /
• pp.707-716
• /
• 2004

Recently, many areas of application such as statistics and industrial engineering are interested in the effective education of databases. In this article we design and implement a database learning system based on learner management techniques. The system supports a personalized/ team-centered learning environment, monitoring the learning attitude of learners, and a method for the assessment.

• Journal of Computing Science and Engineering
• /
• v.4 no.4
• /
• pp.291-312
• /
• 2010

The last decades a large amount of research has been done in the genomics domain which has and is generating terabytes, if not exabytes, of information stored globally in a very fragmented way. Different databases use different ways of storing the same data, resulting in undesired redundancy and restrained information transfer. Adding to this, keeping the existing databases consistent and data integrity maintained is mainly left to human intervention which in turn is very costly, both in time and money as well as error prone. Identifying a fixed conceptual dictionary in the form of a conceptual model thus seems crucial. This paper presents an effort to integrate the mutational data from the established genomic data source HGMD into a conceptual model driven database HGDB, thereby providing useful lessons to improve the already existing conceptual model of the human genome.

• Journal of Electrical Engineering and information Science
• /
• v.1 no.1
• /
• pp.164-172
• /
• 1996

The partitioning of related objects should be performed before clustering for an efficient access in object-oriented databases. In this paper, a horizontal partition of related objects in object-oriented databases is presented. All subclass nodes in a class inheritance hierarchy of a schema graph are shrunk to a class node in the graph that is called condensed schema graph because the aggregation hierarchy has more influence on the partition than the class inheritance hierarchy. A set function and an accessibility function are defined to find a maximal subset of related objects among the set of objects in a class. A set function maps a subset of the domain class objects to a subset of the range class objects. An accessibility function maps a subset of the objects of a class into a subset of the objects of the same class through a composition of set functions. The algorithm derived in this paper is to find the related objects of a condensed schema graph using accessibility functions and set functions. The existence of a maximal subset of the related objects in a class is proved to show the validity of the partition algorithm using the accessibility function.

• Journal of the Korea Computer Industry Society
• /
• v.5 no.5
• /
• pp.699-710
• /
• 2004

It is one of important techniques to protect illegal uses and forgeries for text databases when the internet has become widsepread. Lots of studies and system developments has been progressed in order to protect text databases, important documents of the companies, and blueprints of the research institutes. Given this project securing the KISTI (Korea Institute of Science and Teschnology Information) digital contents, we are to design a watermaking and fingerprinting system protecting document images, and a agent notifying the traitors' location.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.23 no.1
• /
• pp.299-316
• /
• 2012

The purpose of this study is to effectively provide professors in the design field with information services by identifying their information use behaviors. Data were collected by distributing questionnaires after dividing the specialties of 110 professors in the design field into 4 areas. The results were made in terms of purposes of use and the acquisition channels, types of information sources, difficulties of information acquisition and the library use of the institution. Some suggestions were shown as follows: collection of gray literatures such as exhibition data, seminar data, reports and pamphlets, purchase of web databases in design field, information literacy education including the use of domestic and foreign design databases for the professors and the construction of web directories on the library web sites.