• Proceedings of the Korea Information Processing Society Conference
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• 2001.04a
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• pp.329-332
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• 2001

인터넷상에서의 대부분의 검색 환경이 그렇듯이, 인터넷 쇼핑몰에서의 검색 환경 역시 고객 중심으로 제공하는 것이 중요하다. 특히, 고객의 행동 패턴 분석을 통해 얻어진 정보는 고객 중심의 검색 환경을 구성하는 데에 가장 중요한 요소라고 할 수 있으며, 또한 시시각각 변화하는 고객의 심리에 따라서 판매 전략도 달라질 수 있어, 이에 대한 여러 방법들이 연구되고 있는 추세이다. 본 논문에서는 고객과 시스템과의 상호작용으로부터 학습을 최대화시키기 위해 강화학습 기반의 플래닝과 학습의 통합 방법을 통하여 실시간적이고 동적인 인터뷰를 구성하는 방법과 이를 통해 얻어진 개인화된 판매전략과 결정 수와의 통합으로 고객이 원하는 적합한 상품을 추천할 수 있는 방법을 제시한다.

• Journal of the Korean Institute of Intelligent Systems
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• v.14 no.1
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• pp.63-68
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• 2004

In this paper, we propose a method about the extraction of vehicle and tracking trajectory for moving vehicle tracking system in road. This system applied to the monitoring system of the traffic flow for ATMS(advanced traffic management system) of ITS(intelligent transport system). Also, this system can solve the problem of maintenance of loop sensor. And we detected vehicle using differential image analysis. Because of the road environment changes by real time. Therefore, the method to use background image is not suitable. And we used Kalman filter and innovation value and variable search area for vehicle tracking system. Previous method using fixed search area is sensitive to the moving trajectory and the speed of vehicle. Simulation results show that proposed method increases the possibility of traffic measurement more than fixed area traffic measurement system.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.333-336
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• 2011

최근 전 세계적으로 소셜 네트워크 서비스의 사용자가 많이 증가하면서 많은 사람들이 소셜 네트워크 서비스를 이용하고 있다. 그리고 소셜 네트워크 서비스를 사용하는 사용자들은 이를 이용하여 많은 정보를 공유하고 있다. 본 논문에서는 소셜 네트워크 서비스 사용자들이 공유하는 정보 중 음악과 관련된 정보와 개방형 API 를 이용하여 MP3 파일의 메타데이터인 ID3 태그 정보를 검색한다. 검색된 결과와 소셜 네트워크 서비스 사용자 정보를 이용하여 ID3 태그 온톨로지를 생성하고 생성된 온톨로지와 온톨로지 추론기를 사용하여 음악과 관련된 다양한 순위 분석 결과와 음악 및 사용자 추천 서비스를 사용자들에게 제공하기 위한 시스템의 설계를 보인다. 본 논문에서 제안한 시스템은 소셜 네트워크 서비스에 실시간으로 등록되는 글을 이용하기 때문에 최근 음악 트렌드를 쉽게 반영한다. 또한 순위 분석을 위해 수동적으로 자료를 수집하는데 들어가는 시간적 비용을 줄여준다. 그리고 제안한 시스템을 사용하여 제공된 정보는 음악 관련 산업에서 마케팅과 사업 전략자료 등 다양한 형태로 활용이 가능하다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.2
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• pp.296-301
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• 2012

Currently, in order to develop an intelligent search engine to help users retrieve information effectively, many metodes have been used. The effective retrieval methods of these methods use ontology technology. Ontology technology is the core of the Semantic Web. In the Semantic Web, ontology technology can be used to retrieve related information through the inference engine more accurately and simply on the Semantic Web. In this paper, we implement and design college information retrieval based on ontology to retrieve college class, graduate school class and person class. We have collected the hierarchy structure about the College, graduate school and person informations, and we have used protege editor of the ontology developing tool to design some ontologies with the College informations collected. We also tested the designed ontology with the Inference Engine(Pellet) of protege editor, and implemented college information retrieval system using Inference Engine(Jena) for web services.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.41 no.3
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• pp.115-124
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• 2004

The content-based retrieval using low-level features can hardly provide the retrieval result that corresponds with conceptual demand of user for intelligent retrieval. Video includes not only moving picture data, but also audio or closed-caption data. Knowledge-based video retrieval is able to provide the retrieval result that corresponds with conceptual demand of user because of performing automatic indexing with such a variety data. In this paper, we present the knowledge-based video retrieval system using Korean closed-caption. The closed-caption is indexed by Korean keyword extraction system including the morphological analysis process. As a result, we are able to retrieve the video by using keyword from the indexing database. In the experiment, we have applied the proposed method to news video with closed-caption generated by Korean stenographic system, and have empirically confirmed that the proposed method provides the retrieval result that corresponds with more meaningful conceptual demand of user.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.875-878
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• 2007

Up until now, when a user search product information, the keyword-based search that mainly uses frequency of words or vocabulary information has been utilized in large. In the keyword-based research, the user should have to bear additional burden in order to search the displayed results manually once again because it shows those files that have no connection at all with the inquiries made by the user. To resolve such a problem, ontology has been emerged. In this paper, product search system using ontology was constructed directly and also tested how accurate search it does perform through the searching according to classification. To test this, about 40,000 product data of A discount store, which was operating on/off line discount stores, were constructed as database, and developmental environment for User Interface was tested by having developed the search system using JSP and PowerBuilder 9.0. Results from the test proved that the search method using Domain Ontology for product presented and designed in this paper was superior to the existing keyword-based search method.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.7
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• pp.1318-1324
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• 2007

TSP(Traveling Salesman Problem) is a problem finding out the shortest distance out of many courses where given cities of the number of N, one starts a certain city and turns back to a starting city, visiting every city only once. As the number of cities having visited increases, the calculation rate increases geometrically. This problem makes TSP classified in NP-Hard Problem and genetic algorithm is used representatively. To obtain a better result in TSP, various operators have been developed and studied. This paper suggests new method of population initialization and of sequential transformation, and then proves the improvement of capability by comparing them with existing methods.

• Journal of the Korean Society for information Management
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• v.24 no.3
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• pp.119-147
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• 2007

Actually a diffusion of a semantic web application and utilization are situations insufficient extremely. Technology most important in semantic web application is construction of the ontology which contents itself with characteristics of semantic web. Proposed a suitable a method of building web ontology for characteristics or semantic web and web ontology as we compared the existing ontology construction ana ontology construction techniques proposed for web ontology construction, and we analyzed. And modeling old ontology to bases to description logic and the any axiom rule that used an expression way of SWRL, and established inference-based web ontology according to proposed ways. Verified performance of ontology established through ontology inference experiment. Also established an web ontology-based intelligence image retrieval system, to experiment systems for performance evaluation of established web ontology, and present an example of implementation of a semantic web application and utilization. Demonstrated excellence of a semantic web application to be based on ontology through inference experiment of an experiment system.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2009.05b
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• pp.175-179
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• 2009

Researches of current PMIS(Project Management Information System) information searching focus on providing personalized results as well as matching needed queries in an enormous amount of information. This paper aim at discovering hidden knowledge to provide personalized and inferred search results based on the ontology with categorized concepts and relations among construction data. The current PMIS searching occasionally presents too much redundant information or offers no matching results from large volumes of data. In this paper, we propose a service searching system, which becomes aware of users device using iPMIS(Intelligent Program Management Information System). And we design and plant the ontology-based iPMIS, which is aware of the context in its environment.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10b
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• pp.69-71
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• 1999

정보의 양이 많아질수록 사용자가 자신이 원하는 정보를 찾는 작업은 많은 시간과 노력을 요구하게 된다. 이러한 시간과 노력을 줄이기 위해 정보 필터링 시스템이 제시되었고, 정보검색과 자연언어처리 등을 이용한 많은 방법들이 연구되었다. 그러나 이러한 접근방법들은 모두 사용자에게 새로운 정보요구가 생긴 경우 이를 지능적으로 대처하지 못하는 Cold-Start 문제를 안고 있다. 이를 극복하기 위해 협동 정보 필터링 시스템이 등장하였다. 이러한 협동 정보 필터링 시스템은 같은 관심도를 가지는 사람들로 공동체를 형성하기 위해 사용자로부터 관심도를 명시적으로 나타낼 것을 요구하는 등 사용자가 직접 필터링 시스템을 학습시켜야 하는 문제점을 가지고 있다. 본 논문에서는 이러한 문제를 해결하기 위해 사용자들의 선호도를 담고 있는 사용자 프로파일의 유사성을 기반으로 한 공동체 형성 방법을 제안한다.