• Journal of the Korean Society for information Management
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• v.19 no.3
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• pp.91-110
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• 2002

Recently, to overcome the limit of keyword based retrieval system, the study based structured document has been studied. But it is hard for structured retrieval system to adapt a real service, in this paper, we propose a method of retrieval mechanism for the fulltext of XML documents. We explain DTD of XML based report, extracting navigation information and planing to adapt the retrieval system for article retrieval. Using the fulttext retrieval scheme, suggested system can be an alternative plan of professional structured based retrieval system.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.799-801
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• 2007

앞으로 다가올 유비쿼터스 컴퓨팅 환경에서는 일상생활 어디에서든지 컴퓨팅이 가능해질 것으로 예상되며, 원격지의 상대방과의 상호작용이 다양한 형태로 발전할 것으로 예상된다. 이를 지원하기 위하여 유비쿼터스 환경에서의 다자간 인터랙티브 협업 시스템들이 연구되고 있다. 그런데, 현재 개발된 다자간 협업 환경 시스템에서는 자료를 공유하는데 있어서, 데이터에 대한 인덱싱과 검색에 비중을 두지 않고 있다. 공유 데이터는 늘어나는 반면, 그것을 효과적으로 검색할 수 있는 방법이 마련되지 않아 데이터를 공유하고 활용하는 효율성이 떨어질 것이 예상됨에 따라서 키워드 검색 기반으로 데이터를 검색할 수 있는 방법을 마련하고자 한다.

• Journal of the Korean Institute of Intelligent Systems
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• v.17 no.3
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• pp.430-433
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• 2007

There have been several researches to manipulate XML Queries efficiently since XML has been accepted in many areas. Among the many of the researches majority of them adopt relational databases as underlying systems because relational model which is used the most widely for managing large data efficiently. In this paper we develop XQuery to SQL Translation Algorithms called XSTAR that can efficiently handle XPath, XQuery FLWORs with nested iteration expressions, element constructors and keywords retrieval on relational database as well as constructing XML fragments from the transformed SQL results. The entire algorithms mentioned in XSTAR have been implemented as the XQuery processor engine in XML management system, XPERT, and we can test and confirm it's prototype from "http ://dblab.kmu.ac.kr/project.jsp".