• 제목/요약/키워드: rule-based expert system

검색결과 236건 처리시간 0.029초

Drools 기반의 메디컬 Expert 시스템 아키텍처와 프로세스 연구 (Studying on a Medical Expert System Architecture and Process based on Drools)

  • 장원용;최유나;양성수;최은미
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2017년도 추계학술발표대회
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    • pp.827-830
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    • 2017
  • 본 논문은 병원에서 환자가 내원할 때 의사에게 환자 진단과 처방을 지원을 할 수 있는 메디컬 시스템에 대한 연구를 하였다. 메디컬 프로세스를 고려한 환자의 증상에 대한 파악과 진단, 처방에 이르기까지의 지원할 수 있는 병원의 증상 진단 지원 Expert System을 연구한다. 본 Expert System을 구축하기 위하여 오픈소스 프로젝트인 Drools를 사용하였다. 본 시스템은 시스템 운영 중, 병원에서 사용하는 증상 진단 지원 rule들을 용이하게 추가하며 사용할 수 있도록 하며, 사용한 Drools의 호환성 해결과 다양한 기능성을 사용하기 위해 Maven을 이용한 증상 진단 지원 Expert System을 설계하였다. 이 시스템의 전체 구성 시스템 아키텍처뿐만 아니라, 환자가 증상을 입력한 이후의 환자 증상, 진단, 처방에 이르기까지의 병원에서 일어나는 프로세스를 구현 및 연구를 하였다.

분산 전문가 시스템의 기능을 갖는 이산사건 시뮬레이션: 제조 공정 오류 감지와 진단에의 적용 (Discrete Event Simulation with Embedded Distributed Expert System: Application to Manufacturing Process Monitoring and Diagnosis)

  • 조대호
    • 한국시뮬레이션학회논문지
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    • 제7권2호
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    • pp.137-152
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    • 1998
  • One of the components that constitute the simulation models is the state variables whose values are determined by the time related simulation process. Embedding rule-based expert systems into the simulation models should provide a systematic way of handling these time-dependent variables without distracting the essential problem solving capabilities of the expert systems which are well suited for expressing the decision making function of complex cases. The expert system, however, is inefficient in dealing with the time elapsing characteristics of target system compare to the simulation models. To solve the problem, this paper provides an interruptible inference engine whose inferencing process can be interrupted when the variables' value, which are used as the parameters of the rules, are not yet determined due to the time dependent nature of the state variables. The process is resumed when the variables are ready. The elapse of time is calculated by time-advance function of the simulation model to which the expert system has been embedded. The example modeling shown exploits the embedded interruptible inferencing capability for the controlling and monitoring of metal grating process.

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지연시간을 갖는 계통의 성능 향상을 위한 지식기반 전문가 제어기 설계 (Design of rule based expert controller for time delay systems)

  • 박귀태;이기상;김성호;박태홍;고응렬
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1990년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 26-27 Oct. 1990
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    • pp.117-121
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    • 1990
  • The control process involving pure time delays presents a continuing challenge to the control system engineer. The nonlinear nature of the delay which can be introduced into the system make the use of conventional control algorithms a poor prospect. The Smith Predictor was developed to alleviate this problem. Unfortunately the quality of control achieved with the Smith Predictor is known to be sensitive to modelling errors. Only recently have researchers attempted to quantify the Smith Predictor controller's robustness to modelling errors. In several studies stability boundaries were plotted as functions of errors in parameters. But the research results address the question of performance of Smith Predictor controllers, In this paper, the Rule based Expert Systems for performance improvement of the Smith Predictor controller are developed.

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주간수요예측 전문가 시스템 개발 (Development of a Weekly Load Forecasting Expert System)

  • 황갑주;김광호;김성학
    • 대한전기학회논문지:전력기술부문A
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    • 제48권4호
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    • pp.365-370
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    • 1999
  • This paper describes the Weekly Load Forecasting Expert System(Named WLoFy) which was developed and implemented for Korea Electric Power Corporation(KEPCO). WLoFy was designed to provide user oriented features with a graphical user interface to improve the user interaction. The various forecasting models such as exponential smoothing, multiple regression, artificial nerual networks, rult-based model, and relative coefficient model also have been included in WLofy to increase the forecasting accuracy. The simulation based on historical data shows that the weekly forecasting results form WLoFy is an improvement when compared to the results from the conventional methods. Especially the forecasting accuracy on special days has been improved remakably.

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설계도면의 치수표시 자동화를 위한 전문가 시스템의 적용 (Application of Expert System to Automatic Dimension Marking on Design Drawing)

  • 최문희;이근호;조대호
    • 한국시뮬레이션학회논문지
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    • 제13권4호
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    • pp.31-42
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    • 2004
  • GDS (Grating automatic Drawing System), which is an automatic design system of a metal product called grating, is a system that produces various detailed drawings on the basis of information within a Plan Drawing that represents layout of the grating such as locations, shapes, directions, etc. However, automatically produced drawings by GDS do not fully satisfy the standard of the general dimension marking method used among the layout designers. The lack of this standard quality mainly results from the fact that overlapping among dimension markings appear frequently. To solve the overlapping problem we applied the rule-based expert system. The rules are designed based on the expertise of skilled layout designers within the grating production lines.

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송전계통 보호 거리계전기 재정정 영역 판정 전문가시스템 개발 (Development of An Expert System to Decide the Resetting Area of Protective Distance Relay in Power Transmission Systems)

  • 최면송;민병운;김기화;현승호;이승재
    • 대한전기학회논문지:전력기술부문A
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    • 제52권8호
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    • pp.437-443
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    • 2003
  • In this paper an expert system is developed to decide the resetting area of protective devices in power transmission systems. A configuration change in power transmission networks from a substation extension such as new line or bus addition need resetting of protective devices around the point of configuration changes. To find the resetting area in complex power system is very difficult, especially when the distance protective relays are considered to be reset. The proposed expert system, in this paper to find the resetting area has many rules based on the changes of fault currents and apparent factors from the power system alteration. It solves the problem to find relay resetting area using the network information in the database and the rule-base. The case study shows a result of the problem to find relay resetting area in KEPCO system when there is any configuration change.

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

  • 김성인;정석윤
    • 한국국방경영분석학회지
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    • 제24권1호
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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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Application of the auxiliary tunnel reinforcement design using the decision making tools based on expert system integrated fuzzy inference rule

  • Kim Changyong;Hong Sungwan;Bae Gyujin;Kim Kwangyeom
    • 한국지구물리탐사학회:학술대회논문집
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    • 한국지구물리탐사학회 2003년도 Proceedings of the international symposium on the fusion technology
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    • pp.262-271
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    • 2003
  • Specification of reinforcement method was suggested according to the ground condition and tunnelling environment such as adjacent building and surface settlement. Tunnel database consists of 8 different groups of data according to the tunnel construction situations and major problems of ground. A tunnel countermeasure expert system based on client/server system was developed with on-line. The expert system provides proper solution to the each construction sites backing up the information of the tunnelling and ground information through Internet. The effective factors of tunnel construction were shown by the analyzing relationship and partial relationship between face stability and RMR factors. This study will be very helpful to make the most of in-situ data and suggest proper applicability of tunnel reinforcement system escaping from the dependence of some experienced experts for the absent of guide.

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Fuzzy Expert System for Site Characterization

  • Hu, Zhiying;Chan, Christine W.;Huang, Gordon H.
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2002년도 ITC-CSCC -3
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    • pp.1893-1896
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    • 2002
  • Remediation Selection Expert System (RSES) is a rule-based expert system which is used far the selection of remediation techniques fur petroleum contaminated sites. In this paper, we describe a fuzzy logic-based sub-system: Site Characterization Sub-System (SCSS). It is an enhancement of the RSES, which is used to analyze the hydraulic properties of contaminated sites. This paper focuses on an explanation on how to apply fuzzy set theory for identification of soil types and hydraulic properties of a contaminated site. To illustrate application of fuzzy set theory to the problem, two sample cases are presented in detail.

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