• 인지과학
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• 제16권4호
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• pp.369-386
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• 2005

지능형 교수 시스템(ITS: Intelligent Tutoring System)이 기존의 CAI의 제한적 기능을 극복하고, 내장한 지식베이스에 의해 다양한 학습자들의 변인들을 고려한 개별화된 학습 환경을 제공하지만, 교육현장에는 교수내용지식 표현 방법의 부재와 투자 비용의 비효율성으로 인하여 실제적인 개발물은 전무한 상태이다. 이러한 문제점을 해소하기 위하여 ITS에서의 지식표현 기법과 구축된 지식베이스의 재사용에 대한 연구가 필요하다. 교수내용지식의 특성을 고려하여 본 연구에서는 기존의 신경논리망의 한계점을 해결할 수 있도록 지식의 다중 결합체 구성, 이를 이용한 학습의 맥락 설명을 연구의 대상으로 삼았다. 또한 형성된 지식결합체는 군집화하여 지식베이스 객체로 사용하고, 결합체의 자기 학습에 의해 적응적인 지식베이스 객체로의 성장 가능성을 제고한다. 따라서 본 연구에서는 신경논리망의 논리추론, 그리고 인지구조에서 노드의 위상적 불변성을 근거로, 교수내용지식과 객체지향적 개념이 포함된 '확장된 개념의 신경논리망(X-Neuronet: eXtended Neural Logic Network)'을 제안하고, 이 기법에 대한 타당성을 검증하였다. X-Neuronet은 표현의 대상이 되는 지식을 관성과 가변성을 가지는 방향성 결합체로 정의하고, 표현을 위한 기본 개념, 노드의 처리와 연산을 위한 논리연산자, 노드값과 가중치의 결정, 노드활성을 위한 전파 규칙 학습 알고리즘 등을 제공한다.

• 인터넷정보학회논문지
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• 제15권3호
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• pp.125-135
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• 2014

의료 분야에서는 질병의 진단과 치료를 목적으로 하는 지식베이스 구축에 관심이 높다. 이러한 목적의 지식베이스를 구축하는데 가장 중요한 것은 정확하게 지식을 표현하는 것이다. 본 논문에서는 온톨로지를 이용해 최근 의료 분야에서 많은 관심을 받고 있는 알츠하이머 질병과 관련한 국내 논문들을 대상으로 지식을 표현하는 방법을 제안하였다. 본 논문에서 제안한 온톨로지 기반 지식 표현 방법은 저자, 발행기관 등과 같은 서지 정보에서 추출한 클래스들은 물론 논문의 제목, 초록, 키워드, 결론에서 추출한 연구 주제와 관련된 클래스들을 모두 정의하고 프로퍼티를 통해 클래스들간의 다양한 의미적 관계를 포함하고 있다. 그리고 클래스들간의 계층 관계와 프로퍼티의 이행적 특성도 포함하고 있기 때문에 이를 이용한 추론을 지원한다. 따라서 단순한 키워드 검색뿐만 아니라 의미에 기반을 둔 지식 검색이 가능하다. 또한 온톨로지 검색 언어인 SPARQL을 이용해 추론을 통한 지식 검색 요청을 보다 쉽게 표현할 수 있다.

• 경영과학
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• 제11권2호
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• pp.65-77
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• 1994

One of the major issues in the implementation and maintenance of CIM databases is the sharing and exchange of information among the heterogeneous databases. This paper addresses some architectural aspects for integrating the heterogeneous multi-databases using knowledge-based expert systems. we propose a loosely integrated coupling system between databases and knowledge-based expert systems. Especially we suggest the architectural aspects of such a coupling methodology. we also present the structure and knowledge representation scheme for the proposed knowledge-based expert system. A prototype example is included to illustrate the framework and its mechanism for implementation.

• 한국경영과학회지
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• 제14권2호
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• pp.27-42
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• 1989

REA 모델은 EA 모델의 구성요소인 측면을 역할측면, 연산측면, A-PART-OF 측면, IS-A 측면, 속송측면 등의 5개 측면으로 분류한 모델이다. EATPS 는 사용자 인터페이스모듈, 지식생성 모듈, 인스턴스 관리 모듈, 스키마 구조관리 모듈, 무걸성검사 모듈등의 5개 모듈로 구성된 지능적 지식표현 시스템의 REA 모델에 의해 대화식 (interactive) 으로 생성하고 관리한다. 본눈문에서는 EATPS 의 구성과 기능, 지식 정의언어인 EAKDL 의 구조및 대화식 형성, 지식생성 모듈의 구성과 기넝, 클래스 생성 모듈의 기능과 알고리즘, 그리고 상속추론메카니즘을 도입한 생성모듈의 기능 및 알고리즘을 제시하였다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 추계학술대회 논문집
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• pp.119-123
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• 2005

Mold design is a knowledge-intensive decision making process where product designer, injection molding engineer as well as mold designer affect each other. Representation and management of design knowledge is a prerequisite for an intelligent design system, which aims to guide and support designer to carry out design activity in more efficient way by avoiding or minimizing unnecessary trial and errors. This paper discusses the issues in knowledge-based mold design, and describes the structure of a knowledge-based mold design system fur parts with micro features under development.

• 동의생리병리학회지
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• 제25권5호
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• pp.765-772
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• 2011

Knowledge which is represented by formal logic are widely used in many domains such like artificial intelligence, information retrieval, e-commerce and so on. And for medical field, medical documentary records retrieval, information systems in hospitals, medical data sharing, remote treatment and expert systems need knowledge representation technology. To retrieve information intellectually and provide advanced information services, systematically controlled mechanism is needed to represent and share knowledge. Importantly, medical expert's knowledge should be represented in a form that is understandable to computers and also to humans to be applied to the medical information system supporting decision making. And it should have a suitable and efficient structure for its own purposes including reasoning, extendability of knowledge, management of data, accuracy of expressions, diversity, and so on. we call it ontology which can be processed with machines. We can use the ontology to represent traditional medicine knowledge in structured and systematic way with visualization, then also it can also be used education materials. Hence, the authors developed an Shanghanlun ontology by way of showing an example, so that we suggested a methodology for ontology development and also a model to structure the traditional medical knowledge. And this result can be used for student to learn Shanghanlun by graphical representation of it's knowledge. We analyzed the text of Shanghanlun to construct relational database including it's original text, symptoms and herb formulars. And then we classified the terms following some criterion, confirmed the structure of the ontology to describe semantic relations between the terms, especially we developed the ontology considering visual representation. The ontology developed in this study provides database showing fomulas, herbs, symptoms, the name of diseases and the text written in Shanghanlun. It's easy to retrieve contents by their semantic relations so that it is convenient to search knowledge of Shanghanlun and to learn it. It can display the related concepts by searching terms and provides expanded information with a simple click. It has some limitations such as standardization problems, short coverage of pattern(證), and error in chinese characters input. But we believe this research can be used for basic foundation to make traditional medicine more structural and systematic, to develop application softwares, and also to applied it in Shanghanlun educations.

• 한국수학교육학회지시리즈A:수학교육
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• 제51권2호
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• pp.161-171
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• 2012

Generally mathematics is regarded as a subtle subject to grasp their true meaning. And teacher's personal conceptions of mathematics influence greatly on the teaching and learning of mathematics. More over often teachers confess their difficulties in explaining the true nature of mathematics. In this paper, applying the theory of epistemology, we tried to search factors that must be counted important when trying to understand the true nature of mathematics. As results, we identified five characteristics of mathematical knowledge such as logical reasoning, abstractive concept, mathematical representation, systematical structure, and axiomatic validation. Next, we tried to investigate math education major students' conception of mathematics using these items. To proceed this research we asked 51 students from three Universities to answer their opinion on 'What do you think is mathematics?'. Analysing their answers in the light of the above five items, we got the following facts. 1. Only 38% of the students regarded mathematics as one of the five items, which can be considered to reveal students' low concern about the basic nature of mathematics. 2. The status of students' responses to the question were greatly different among the three Universities. This shows that mathematics professors need to lead students to have concern about the true nature of mathematics.

• 한국CDE학회논문집
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• 제16권3호
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• pp.167-177
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• 2011

This paper describes an ontology-based intelligent CAD system for injection mold design, which has been developed based on a commercial CAD system called Unigraphics and an ontological framework for representing the implicit design knowledge as well as the explicit based on the extended function-behavior-structure (FBS) engineering design model that includes the constraint. The system also provides various convenient solid modeling capabilities for mold design and the design process modeling capability that facilitates mold redesign process.

• International Journal of Contents
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• 제16권3호
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• pp.51-65
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• 2020

Narratives arouse diverse and rich affective responses to recipients, and this is one of the reasons why narratives are universal and popular. Computational studies on narratives have established a formal model or system of the affective response based on the theory in psychology or media research, and have analyzed or generated a narrative that can evoke a specific affective response. In this paper, we propose a new computational model that can detect the affective response expected to appear in the narrative based on the narrative agent's knowledge. First, we designed a narrative representation model that can elaborately express the event structure and the agent's knowledge as well. Additionally, an analysis method was proposed to detect the three affective responses and the related situational information. Then, we validated the model through a case study about an actual movie narrative. Through the case study, we confirmed that the model captures the affective responses of the audience. The proposed model can be effectively used for the narrative analysis and the creation that must consider the affective responses of the recipient.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1996년도 춘계공동학술대회논문집; 공군사관학교, 청주; 26-27 Apr. 1996
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• pp.709-712
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• 1996

Generating a project network of a specific construction project is very time consuming and difficult task in the field. To effectiviely automate and support the planning process, we design a case-based project planning expert system inspired by the fact a human expert project planner uses previous cases for planning a new project. A construction project case consist of its specific characteristics and the corresponding project network (i.e. project plan). Using frame based representation. we represent the project features affecting the progress network and the entities composing the project plan such as the buildings, construction methods, WBS (work breakdown structure), activities, and resources. The project planning process runs through most similar case retrieval, case adaptation, and user requirement satisfaction. We represent the construction domain knowledge for each procedure using constraints and rules. We develop the methodology for constraint-based case adaption. Case adaptation process mainly consist of activity generation/deletion and predecence constraint satisfaction, for which we develop the dynamic constraint generation method and connect user-level requirement representation the system-level network modification knowledge. The methodology is being applied to the prototype for apartment construction project planning.