지질도를 위한 시공간 온톨로지 모델 = Spatiotemporal ontology model for geological map

다국어 초록 (Multilingual Abstract)

Most of the Geological Information System retrieves the information through spatiotemporal query using the spatiotemporal model, but it is not sufficient to the users. It is not the problem of the databases but the problem of the information itself without being structured systematically. In other words, we need the precise structurization of the data systematically. A solution of these problems is a research about the modeling technique of using the ontology to be extended to spatiotemporal area. In this dissertation, we introduce the ontology concept to the spatiotemporal modeling technique of our research area, and then we propose the geological map spatiotemporal ontology model to improve the efficiency of the geological information system and the accuracy of the information retrieval. The contents of this dissertation are as follows:

First, we introduce spatiotemporal modeling technique of the geological map of our research area and the concept of the ontology, and then we propose the conceptual model of the spatiotemporal ontology of the geological map to improve the efficiency of the geological map information system and the accuracy of the information retrieval. The core of developing this model is the process of the conceptualization.
Second, we build the whole system framework of the spatiotemporal ontology model. we define the spatiotemporal ontology model integrated the spatiotemporal model and the ontology concept and suggest the spatiotemporal ontology model.
Third, we implemented the retrieval system of the geological terms which is the typical concept of the ontology, using the geological spatiotemporal ontology model. Also, we applied the geological map spatiotemporal ontology model to GIS and then we implemented the geological map spatiotemporal information retrieval system.
Fourth, we suggest the performance and the validity of our geologic map spatiotemporal information retrieval system based on the geologic spatiotemporal retrieval system. To evaluate the performance of the proposed model, we performed the experiments and the analyses about the various kinds of items. Also, we analyzed the performances of the existing geological information system. And then we compared and evaluated with those of our proposed geological map spatiotemporal ontology model.
Finally, we suggested the spatial analysis examples such as the practical example research in Geochemical and the geology-centered analyses, and then we verified the reusability of the geological map spatiotemporal ontology model.

The world is continuing the research about how to classify the geological data. The classification of the specific area is building the upper/lower conceptual hierarchy through establishing the terms. It is very important because it is the core of the spatiotemporal ontology model. The core of the ontology model determines the level of the databases in managing and expressing the data in the spatiotemporal databases. The geological spatiotemporal ontology model developed in this dissertation is needed to establish the precise specification for the ontology concept according to the development technique. Therefore, future works will need a research to write richer and more precise specification and to establish the geological map conceptual terms using the proposed ontology model. The ontology technique which includes establishing the terms, the classification, the expression, the data model, the performance of the query and so on will be extended into the human and social area. As the ontology means the existence or the thoughts, it can share the conceptual area which human beings share with through computers.

목차 (Table of Contents)

• I 서론 1
• 1.1 연구 배경 및 목표 1
• 1.2 연구 내용 및 구성 4
• II 관련 연구 8
• 2.1 시공간 모델 8
• 2.2 시소러스와 온톨로지 10
• 2.3 지질정보표준화 13
• 2.4 기존 지질정보시스템 분석 16
• 2.5 기존연구의 문제점 및 해결방안 23
• III 지질도 시공간 온톨로지의 개념적 모델 26
• 3.1 연구도메인 분석 27
• 3.2 지질도 표준화 39
• 3.3 지질도 시공간 온톨로지 개념도 작성 41
• 3.4 지질도 시공간 온톨로지 모델의 정립 50
• IV 지질도 시공간 온톨로지 모델 설계 56
• 4.1 시스템 프레임워크 56
• 4.2 이론적 정의 58
• 4.3 시공간 온톨로지 데이터베이스 67
• V 시스템 구현 68
• 5.1 지질정보 시소러스 시스템 68
• 5.2 지질도 시공간 검색시스템 77
• VI 실험 및 평가 88
• 6.1 실험 환경 88
• 6.2 질의 성능 실험 90
• 6.3 제안된 시스템의 평가 93
• VII 지질도 시공간 온톨로지 모델의 재사용성 96
• 7.1 지화학 분야의 재사용 96
• 7.2 공간 분석에서의 재사용성 104
• VIII 결론 108
• 참고 문헌 111