• The Journal of Information Systems
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• v.20 no.3
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• pp.237-255
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• 2011

지난 수십 년 간 연구자들은 효과적인 진료지원시스템을 개발하기 위해 다양한 도구와 방법론들을 제안하였고 지금도 새로운 방법론과 도구들을 계속적으로 개발하고 있다. 그 중에서 흉통으로 응급실에 내원한 노인환자에 대한 정확한 진단은 중요한 이슈 중의 하나였다. 따라서 많은 연구자들이 의사의 진단 능력을 향상시키기 위한 지능적인 의료의사결정과 시스템 개발에 투신하고 있지만 전통적인 의료시스템에 따른 대부분의 진료의사결정이 단일 분류기(classifier)에 기반하고 있어 만족스런 성능을 보여주지 못하고 있는 것이 현실이다. 따라서 이 논문은 앙상블 전략을 활용하여 의사들이 노인환자들의 흉통을 더 정확하고 빠르게 진단하는데 있어 도움을 줄 수 있게 하였다. 의사결정나무, 인공신경망, SVM 모델을 결합한 앙상블 기법을 실제 응급실에서 수집한 응급실 자료에 적용하였고, 그 결과 단일 분류기를 사용하는 것에 비해 월등히 향상된 진단 성과를 보이는 것을 관찰 할 수 있었다.

• Journal of the Korea Society for Simulation
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• v.19 no.3
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• pp.127-135
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• 2010

Modern marine navigation requires officers on the bridge to monitor a torrent of data on both the insides and outsides of the ship from numerous useful devices. But despite these tools, navigators can still find it difficult to make a safe decision for two reasons: one is that too much data if provided too quickly tends to cause fatigue and overwhelm the officer, and the other is that any inconsistency across data from several different types of devices can lead to confusion. Indeed, the fact remains that the many marine accidents can be attributed to human error, and hence there is a strong need for decision-support tools for marine navigation. One technique of providing decision support is through the use of simulation to evaluate or predict system dynamics over time using an accurate model. This paper, as a simulation method for risk prediction for a navigation safety information system of ship, suggests a navigation prediction simulation system using various knowledge bases and discrete event simulation methodology, and supports the validity of the system through the examples of components in a restricted navigation situation scenario.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11c
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• pp.1449-1452
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• 2003

국내에서 지방자치단체의 정보화 추진은 정보화의 변화 추세에 따라 업무별로 자료를 구축하여 활용되고 있으나 통합적으로 연결된 형태의 자료구축이 이루어지지 않고 있어 현 정보시스템의 활용 효율을 높이고 의사결정지원을 위한 정보시스템의 구축이 필요하다. 이에 지방자치단체에서 업무적으로 연결된 통합 DB(Database)와 DW(Data Warehouse)를 구축하여 업무 편리성을 높이고 의사결정에 활용할 수 있는 모델을 제시한다.

• Convergence Security Journal
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• v.19 no.2
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• pp.129-136
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• 2019

The main tasks of commander and staffs in ground operations are a continuation performing the process of making decisions in various situations. Since the current decision-making process is largely dependent on qualitative methods, it is difficult to integrate with the decision-making tools associated with the 4th Industrial Revolution. The purpose of this study is to suggest the process of deriving the relative importance of the evaluation factors using the AHP with focusing on assessing the avenues of approach in IPB related to the ground operation plan. The most important aspect of IPB is the evaluation of the avenues of approach. Evaluation factors include target accessibility, observation and seasons, concealment and cover-up, ease of maneuverability, and ease of transition to adjacent access roads. The existing methods are the comparison method with evaluation factors and the analysis with the advantages and disadvantages. However, it has been criticized that they regard evaluation factors as equal importance. The results show that target accessibility has the highest score related with priority when considering the criteria.

• Spatial Information Research
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• v.9 no.2
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• pp.227-238
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• 2001

As society progresses and becomes more complicated, improvements and demanded in the quality of life according to various interest groups. In relation to environment concerns, waste landfill sites in particular have been of concern. Conflicts involving treatment of such sites and decision making policies have been a point of contention between local governments, residents, and concerned organizations. To resolve these conflicts, this study developed the Multi-Criteria Spatial Decision Support System (MC-SDSS). The results of the case study revealed several conclusions; first, the approach used in this study can help to yield a better consensus for deciding upon waste landfill sites; next, by conducing sensitivity analysis, technical errors which can occur during the decision making process can be minimized; and finally, resistance from specific opposition groups can be effectively dealt with by using MC-SDSS.

• 한국방재학회:학술대회논문집
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• 2010.02a
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• pp.69.1-69.1
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• 2010

본 연구는 교량 시설물의 재난방지를 위한 정보시스템의 구축에 있어 선행되어야 하는 교량 구조계산서 항목 저장정보의 질적 향상을 위해 XML 스키마 매칭 기법을 효율적으로 활용할 방법에 대해 제시하였다. 이를 위하여 XML 스키마 매칭에 사용되는 가중치 변화에 따른 매칭 정확도를 나타내는 데이터를 구축하고, 이를 활용하여 데이터 마이닝 기법 중 하나인 의사결정나무 모델을 구현하여 교량의 형식, 문서가 포함하고 있는 항목의 수, 문서를 작성한 회사에 따라 달라질 수 있는 최적의 가중치를 지동으로 선정할 수 있는 프로세스를 제안하였다. 의사결정나무 모델을 통해 결정한 매칭 가중치는 이전에 비하여 약 10% 정확도 상승효과가 있음을 알 수 있었다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.652-654
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• 2021

Attacks such as DDoS are detected by the intrusion detection system and can be prevented early. DDoS attack traffic was analyzed using the decision tree. Deterministic features with high importance were found, and the accuracy was verified by proceeding the decision tree for only those properties. And the contents of false positive and false negative traffic were analyzed. As a result, the accuracy of one attribute was 98% and the two attributes were 99.8%, respectively.

• Journal of Information Management
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• v.16 no.2
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• pp.116-123
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• 1983

• The Journal of Information Systems
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• v.1
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• pp.25-63
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• 1992

• Journal of Distribution Research
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• v.5 no.2
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• pp.69-90
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• 2001

This study is to confirm how customers relationship-orientation toward the focal company has been constructed by what factors. The major factors are including the level of customer satisfaction and four components of transaction-characteristics like efficiency of decision making, inertia of decision making, information-seeking in store, and perceived risk. For testing of the hypotheses, customer survey has been conducted at four department stores and three discount stores in the Bundang Area. The sample size is 494. The result of the survey has indicated that customers relationship-orientation is influenced by customer satisfaction, efficiency of decision making, and inertia of decision making, but not by information-seeking in store and perceived risk. Further research has been needed for solving these conflicting results.