• Title/Summary/Keyword: knowledge-based expert system

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지능형 전문가관리 프레임워크를 위한 주제 분야 계층 자동 생성

  • Yang, Geun-U;Lee, Sang-Ro
    • 한국경영정보학회:학술대회논문집
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    • 2007.11a
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    • pp.294-299
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    • 2007
  • In this paper, we introduce the methodology for the automatic generation of the subject field hierarchy for Intellgent Expert Management Framework using WordNet. Intelligent Expert Management Framework, which is proposed as an appropriate method to manage valuable tacit knowledge within the organization, defines the expert profile structure and proposes the efficient method to automate the process to collect and update the expert profile information based on the profile structure defined. To increase the satisfaction level of users, additional intelligent search features are defined and users can be given the list of experts in related or similar expert fields when they perform expert searches based on the expert database being built. To enable automatic profiling of the organizational experts as well as intelligent expert searches, the subject field hierarchy, upon which the expert profiles are classified and expert searches for similar fields are performed, should be predefined. In this paper, we propose the WordNet library method that first eliminates the ambiguity of the senses of nominal data values, constructs the subject field hierarchy by overlapping the hypernym of the remaining senses, and lastly adjusts the derived hierarchy to the preference of users. Based on the proposed methodology, we expect to avoid the prohibitive costs in building large subject field hierarchies when manually done as well as maintain the objectivity of the hierarchies.

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A Fundamental Study for 8 Constitution Medicine Diagnosis Expert System Development (8체질(體質) 진단(診斷) 전문가(專門家) 시스템 개발을 위한 기초연구(基礎硏究))

  • Shin, Yong-Sup;Park, Young-Bae;Park, Young-Jae;Kim, Min-Yong;Lee, Sang-Chul;Oh, Hwan-Sup
    • The Journal of the Society of Korean Medicine Diagnostics
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    • v.11 no.1
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    • pp.25-47
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    • 2007
  • Background and Purpose: There was seldom study about method that diagnose 8 Constitution beside method of pulse diagnosis in 8 Constitution Medicine. Objectives: This study is to make out check list for 8 Constitution Medicine Diagnosis Expert System Development used CBR(Case based Reasoning). Methods: Review of literatures about special quality element of 8 Constitution and supplement learning advice of 8 Constitution Medicine Experts constructed knowledge base. And then, knowledge base divided through AHP(Analytic Hierarchy Process), and made out check list with this. Results: Knowledge base based on special quality element of 8 Constitution was divided by 5 greate classification and 25 bisection kind, and check list consisted of 251 item was made out through this. Conclusion: Based on this research, cases necessary to make 8 Constitution Medicine Diagnosis Expert System can be gathered through check list, and further study for 8 Constitution Medicine Diagnosis Expert System Development used CBR(Case based Reasoning) is needed to supplement this research.

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Development of Expert System for Maintenance of Tunnel(I) (터널의 유지관리를 위한 전문가시스템 개발(I) : 시스템 구축 및 적용성 검토)

  • Kim, Do-Houn;Huh, Taik-Nyung;Kim, Moon-Kyum
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.4 no.2
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    • pp.175-184
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    • 2000
  • The maintenance of tunnels is often neglected since tunnels has tendency to become stable with time. The determination of safety of tunnels is a complicated problem. So the role of experienced engineer in the maintenance is very important and development of an expert system which can perform as these engineers has been needed. In this study, an expert system which can determine the safety of tunnels is developed. The developed knowledge base contains the maintenance procedure which is used in KlSTEC(Korea Infrastructure Safety & Technology Corporation). Field test, laboratory test and nondestructive test methods are considered in this knowledge base. Criteria for each item and integrated diagnosis criteria are implemented in the expert system based on literatures and reports. The expert system includes basic inspection. detail inspection and precision inspection. For precision inspection. it has the capacity to exchange the result from numerical analysis by a commercial program FLAC. To verify the expert system. the proposed procedure was compared with an existing tunnel diagnosis report.

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RBFN기법을 활용한 적응적 사례기반 설계

  • Jeong, Sa-Beom;Im, Tae-Su
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2005.10a
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    • pp.237-240
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    • 2005
  • This paper describer a design expert system which determines the design values of shadow mask using Case-Based Reasoning. In Case-Based Reasoning, it is important to both retrieve similar cases and adapt the cases to meet the design specifications exactly. Especially, the difficulty in automating the adaptation process will prevent the designers from using the design expert systems efficiently and easily. This paper explains knowledge-based design support systems for shadow mask through neural network-based case adaptation. Specifically, we developed 1) representing design knowledge and 2) adaptive case-based reasoning method using RBFN (Radial Basis Function Network).

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An Expert System for Aircraft Emergency (항공기 비상조치 전문가 시스템)

  • 김성인;정석윤
    • Journal of the military operations research society of Korea
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    • v.24 no.1
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    • pp.88-97
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    • 1998
  • It is critical to determine the appropriate actions for safe landing of an aircraft in an emergency situation. An expert system can be very useful for this purpose. An expert system specifically for jet fighter $F-\bigcirc\bigcirc$ has been developed. Its knowledge base contains the standard procedures provided by various flight manuals and the expertise of human specialists such as pilots and emergency management personnels. Advising procedures are represented by an IF-THEN format in the developed rule-based expert system. Advises are provided in real time during the entire flight processes of ground, takeoff, inflight, and landing. The developed system would significantly increase the survivability of pilots and aircraft, while decreasing operational costs of emergency management personnels. By modifying the knowledge base, the developed system can also be applied to other types of aircrafts including civilian airlines.

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Development of Expert System for Primary Restorative Transmission System Planning (전문가시스템을 이용한 시송전 계통의 구성)

  • Lee, Hung-Jae;Park, Sung-Jin;Lee, Kyeong-Seob;Park, Sung-Min
    • Proceedings of the KIEE Conference
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    • 2003.07a
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    • pp.172-174
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    • 2003
  • Power system restoration following a large black-out starts with charging of primary transmission lines. As the power systems are gradually enlarged and become more complex, the power plant and transmission of electricity units are being expanded continuously. Accordingly, evaluation and reconfiguration of the primary transmission system is needed. So far it has been decided to analyze and evaluate with the knowledge and experience of the corresponding expert. This paper presents an expert system for configuring the optimum primary transmission system based on expert knowledge, static analysis and configuration data.

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an Expert System for Part Classification and Coding (전문가 시스템을 이용한 부품 분류 및 코딩)

  • Park, Yang-Byung
    • Journal of Korean Institute of Industrial Engineers
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    • v.17 no.2
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    • pp.17-26
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    • 1991
  • This paper discusses an expert system to generate part codes and construct part families, ESPCC, for the group technology application. The ESPCC, that is developed by using VP-Expert rule-based expert system development tool, embodies the specific knowledge of human experts to determine part codes consistent with the OPITZ classification and coding system. The ESPCC is implemented on an IBM compatible personal computers running MS-DOS.

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Stacking Sequence Optimization of Composite Laminates for Railways Using Expert System (철도분야 응용을 위한 전문가 시스템을 이용한 복합적층판의 적층순서 최적설계)

  • Kim Jung-Seok
    • Journal of the Korean Society for Railway
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    • v.8 no.5
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    • pp.411-418
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    • 2005
  • This paper expounds the development of a user-friendly expert system for the optimal stacking sequence design of composite laminates subjected to the various rules constraints. The expert system was realized in the graphic-based design environment. Therefore, users can access and use the system easily. The optimal stacking sequence is obtained by means of integration of a genetic algorithm, finite element analysis. These systems were integrated with the rules of design heuristics under an expert system shell. The optimal stacking sequence combination for the application of interest is drawn from the discrete ply angles and design rules stored in the knowledge base of the expert system. For the integration and management of softwares, a graphic-based design environment that provides multi-tasking and graphic user interface capability is built.

Knowledge-based Expert System for the Preliminary Ship Structural Design (선체 구조설계를 위한 지식 베이스 전문가 시스템)

  • Y.S. Yang;Y.S. Yeon
    • Journal of the Society of Naval Architects of Korea
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    • v.29 no.1
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    • pp.1-13
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    • 1992
  • The objective of this study is to develop knowledge-based system for the preliminary design and midship section design of bulk carrier and to enhance the applicability of knowledge engineering in the field of Naval Architecture. First, expert system shell called E.1 is developed in C language. E.1 supports backward-chaining, automatic iteration procedure and reiterative inference mechanism for efficient application of knowledge-based system in structural design. Knowledge representation in E.1 includes IF-THEN rules, 'facts'and 'tables'. Second, knowledge bases for the principal particulars and midship section design are developed by experimental formula, design standard and experiential knowlege. Third, hybrid system combined this knowledge-based system with the optimization program of midship section is developed. Finally, the simplified design method utilizing the regression analysis of the optimum results of stiffened plate is developed for facilitating the design process. Using this knowledge-based system, the design process and results for Bulk carrier and stiffened plates are discussed. It is concluded that knowledge-based system is efficient for preliminary design and midship section design of the ship. It is expected that the performance of the CAD system would be enhanced if the better knowledge-base is accumulated in the E.1 tool.

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Development of Web-based Diagnosis Expert System of Traditional Oriental Medicine (인터넷 기반 한의진단전문가 시스템(KHU-PIPE) 개발)

  • Choi Seung Hoon
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.16 no.3
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    • pp.528-531
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    • 2002
  • In Traditional Oriental Medicine, there has been a growing needs for computerized diagnosis expert system, which can implement pre-diagnosis and correct the errors of practitioners. Therefore, we developed the expert system (KHU-PIPE : Kyung Hee University - Pattern Identification and Prescription Expert) for diagnosis and treatment. It has three characteristics as following. First. this system has the knowledge base which modified the standardized data designed by Chinese government during 1980s. Second, it provides the objective and standardized diagnosis as the results of pattern identification and their appropriate prescriptions for treatment. Third, it is applied to both LAN system and internet. Furthermore, it can be used as an educational methods for the practices of pattern identification and prescription, and provide the objective criteria for clinical studies and promote the Traditional Oriental Medicine as an evidence-based medicine.