• Title/Summary/Keyword: 데이터 지역성

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QUISIS: A Query Index Method Using Interval Skip List (QUISIS: Interval Skip List를 활용한 질의 색인 기법)

  • Min, Jun-Ki
    • The KIPS Transactions:PartD
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    • v.15D no.3
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    • pp.297-304
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    • 2008
  • Due to the proliferation of the Internet and intranet, new application domains such as stream data processing have emerged. Stream data is real-timely and continuously generated. In stream data environments, a lot of queries are registered, and then, the arrived data item is evaluated by registered queries. Thus, to accelerate the query performance, diverse continuous query index schemes have been proposed for stream data processing systems. In this paper, we focus on the query index technique for stream data. In general, a stream query contains the range condition. Thus, by using range conditions, the queries can be indexed. In this paper, we propose an efficient query index scheme, called QUISIS, using a modified Interval Skip Lists to accelerate search time. QUISIS utilizes a locality where a value which will arrive in near future is similar to the current value. Through the experimental study, we show the efficiency of our proposed method.

Implementation of the SyncML Conformance Test And Interoperability Test Environment (SyncML 적합성 및 상호 연동성 시험 연구)

  • Yi, Jong-Pil;Choi, Hoon;Yoon, Dae-Kyun
    • Proceedings of the Korean Information Science Society Conference
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    • 2001.10c
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    • pp.724-726
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    • 2001
  • SyncML은 무선 분산환경에서 멀티플 네트웍과 플랫폼, 그리고 장치간 공유 데이터를 서로 일치(동기)시키는 산업계 표준 프로토콜로 떠오르고 있는 신기숱이다. 지금까지 무선 데이터 동기화는 지역적인 제약이 따라왔고 서로 다른 프로토콜을 사용하는 플랫폼간의 동신이나 데이터 교환이 불가능하였다. 이에 SyncML 기술을 이용한 무선 데이터 동기 방식의 표준이 제정 되었으며 이를 구현한 서로 다른 플랫폼간의 연동성과 적합성을 테스트 하는 것이 필수적인 요소로 떠오르고 있다. 이 논문에서 는 SyncML 을 구현한 멀티플 플랫폼간의 적합성 및 연동성을 테스트하기 위한 방안과 사례를 제시한다.

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Compared evaluation on Data Table of domestic and international Public Web sites (국내외 공공기관 웹 사이트의 데이터 테이블 비교 평가)

  • Park Ji-Yong
    • Proceedings of the Korea Society for Industrial Systems Conference
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    • 2006.05a
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    • pp.89-94
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    • 2006
  • 웹은 제작과 사용이 간편하다는 이점으로 인해 사용인구가 폭발적으로 증가하고 있다. 또한 웹은 지역, 성별, 연령에 관계없이 사용할 수 있는 보편적인 특성을 지니고 있다. 이러한 웹의 보편적 특징은 특히 장애인들을 위해서 웹 접근성이라는 용어로 사용되고 있다. 이러한 웹 접근성을 평가하기 위해 국내 정부기관 웹 사이트와 국제기구 웹 사이트를 비교 평가하였다. 특히, 웹 접근성평가는 평가자의 기준에 의해 평가결과가 모호하며 평가결과가 상당부분 왜곡되어 있다는 문제점이 있다. 또한 이러한 문제점은 데이터테이블에서 두드러지게 나타난다. 본 연구에서는 데이터 테이블의 왜곡된 평가에 대한 문제점을 도출하고 그러한 문제점을 수정하여 국내외 웹 사이트들을 비교 평가하였다. 평가결과, 국내외 웹 사이트의 데이터 테이블에 대한 웹 접근성은 많은 격차가 존재하였으며, 웹 접근성 준수 여부는 지침의 기술적 준수뿐만 아니라 웹 사이트 설계 시 화면 구성에 의해서도 결정되어 짐을 제시하였다.

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An Efficient Data Centric Storage Scheme with Non-uniformed Density of Wireless Sensor Networks (센서의 불균일한 배포밀도를 고려한 효율적인 데이터 중심 저장기법)

  • Seong, dong-ook;Lee, seok-jae;Song, seok-il;Yoo, jae-soo
    • Proceedings of the Korea Contents Association Conference
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    • 2007.11a
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    • pp.135-139
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    • 2007
  • Recently Data Centric Storage (DCS) schemes are variously studied for several applications (e.g. natural environment investigation, military application systems and environmental changes monitoring). In DCS scheme, data is stored at nodes within the network by name. There are several drawbacks in the existing schemes. The first is the inefficiency of the range query processing on not considered the locality of store point. the second is the non-homogeneity of store load of each sensors in case of the sensor distribution density is non-uniformed. In this paper, we propose a novel data centric storage scheme with the sensor distribution density which satisfied with the locality of data store location. This scheme divides whole sensor network area using grid and distributes the density bit map witch consist of the sensor density information of each cell. sensors use the density bit map for storing and searching the data. We evaluate our scheme with existing schemes. As a result, we show improved load balancing and more efficient range query processing than existing schemes in environment which sensors are distributed non-uniform.

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3D Adjacency Spatial Query using 3D Topological Network Data Model (3차원 네트워크 기반 위상학적 데이터 모델을 이용한 3차원 인접성 공간질의)

  • Lee, Seok-Ho;Park, Se-Ho;Lee, Ji-Yeong
    • Spatial Information Research
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    • v.18 no.5
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    • pp.93-105
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    • 2010
  • Spatial neighborhoods are spaces which are relate to target space. A 3D spatial query which is a function for searching spatial neighborhoods is a significant function in spatial analysis. Various methodologies have been proposed in related these studies, this study suggests an adjacent based methodology. The methodology of this paper implements topological data for represent a adjacency via using network based topological data model, then apply modifiable Dijkstra's algorithm to each topological data. Results of ordering analysis about an adjacent space from a target space were visualized and considered ways to take advantage of. Object of this paper is to implement a 3D spatial query for searching a target space with a adjacent relationship in 3D space. And purposes of this study are to 1)generate adjacency based 3D network data via network based topological data model and to 2)implement a 3D spatial query for searching spatial neighborhoods by applying Dijkstra's algorithms to these data.

Prediction of Forest Fire Hazardous Area Using Predictive Spatial Data Mining (예측적 공간 데이터 마이닝을 이용한 산불위험지역 예측)

  • Han, Jong-Gyu;Yeon, Yeon-Kwang;Chi, Kwang-Hoon;Ryu, Keun-Ho
    • The KIPS Transactions:PartD
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    • v.9D no.6
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    • pp.1119-1126
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    • 2002
  • In this paper, we propose two predictive spatial data mining based on spatial statistics and apply for predicting the forest fire hazardous area. These are conditional probability and likelihood ratio methods. In these approaches, the prediction models and estimation procedures are depending un the basic quantitative relationships of spatial data sets relevant forest fire with respect to selected the past forest fire ignition areas. To make forest fire hazardous area prediction map using the two proposed methods and evaluate the performance of prediction power, we applied a FHR (Forest Fire Hazard Rate) and a PRC (Prediction Rate Curve) respectively. In comparison of the prediction power of the two proposed prediction model, the likelihood ratio method is mort powerful than conditional probability method. The proposed model for prediction of forest fire hazardous area would be helpful to increase the efficiency of forest fire management such as prevention of forest fire occurrence and effective placement of forest fire monitoring equipment and manpower.

A Study on Expansion Proposal of Data Dividend Qualification Based on the Contribution of Platform Workers (플랫폼 노동자의 기여에 따른 데이터 배당 자격 확대 제안 연구)

  • CHOI, Seoyeon;SHIN, Seoung-Jung
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.21 no.2
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    • pp.187-193
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    • 2021
  • In February 2020, Gyeonggi-do paid the world's first Data Dividend to local residents of Gyeonggi Province who produced data using local currency. Currently, Data Dividend is being paid to consumers who have produced data, but this paper studied the expansion of Data Dividend qualifications according to the contribution to creating added value. First, it raised the question of whether it is right for the recipient of Data Dividend to have only the consumers who produced the data. Second, by analyzing the four elements of data valuation criteria that influenced the creation of added value identified the objects that influence the creation of added value. The 4 factors were divided into productivity, effectiveness, concreteness, and usability, and the objects corresponding to each factor were analyzed. Accordingly, it was determined whether platform workers contributed to the creation of added value. In conclusion, it was confirmed that not only consumers, who were the first data producers, but also platform workers who contributed to the concreteness of data valuation to create added value can qualify for Data Dividend. Since this paper focuses on the necessity of data allocation centered on platform workers among the objects, the validity of objects that influence added value other than platform workers are excluded.

Development of Business Rule Management System for Data Quality Management of Local Health Care Information System (지역보건의료정보시스템 데이터 품질 관리를 위한 업무규칙 관리시스템 구현)

  • Park, Sang-Mi
    • Proceedings of the Korea Information Processing Society Conference
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    • 2014.11a
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    • pp.759-762
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    • 2014
  • 정보시스템은 변화한다. 업무 담당자도 변경된다. 변화하는 환경 속에서 데이터 품질을 유지한다는 것이 쉬운 일은 아니다. 신뢰성 있는 데이터를 얻기 위해서 공공 혹은 민간, 국내 혹은 국외에서 데이터 품질 관리에 관한 연구가 활발히 이루어지고 있다. 데이터 품질 관리 항목 중 하나인 업무규칙 관리시스템을 구현하여 신뢰성 있는 정보를 얻을 수 있도록 해보고자 한다. 도출 및 분류, 진단 수행 이력 관리가 가능하도록 시스템 분석, 설계, 구현하였다. 업무규칙 관리를 위해서 선결사항인 표준단어관리, 표준도메인 관리, 워크플로우 관리 기능을 구현하였다. 이로 인해 데이터품질관리 체계 수립을 중심으로 믿을 수 있는 데이터를 도출하여 국민 건강을 위하여 의미 있는 정책 수립에 도움이 되기를 기대한다.

A Study on Korea Land Use Information System Zoning Data Maintenance Plan (국토이용정보체계 용도지역지구 데이터 정비방안)

  • Lee, Se-won
    • Journal of Cadastre & Land InformatiX
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    • v.51 no.2
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    • pp.51-72
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    • 2021
  • The purpose of this study is to explain the types and causes of errors in zoning data that occur in the topographic map notification procedure, and to prepare a data maintenance plan. In Korea, like the United States, law-based land use regulation is dominant. In other words, according to the land use regulation method in the Act, the government designates zoning for all lots in the country, and landowners check the land use regulations of their land through the Korea Land use Information System. The land use plan confirmation document is important land information that affects the results of administrative dispositions such as land transactions between individuals or permission for development activities. However, there are data errors that occur during the current topographic map notification procedure and data construction process. Therefore, four local governments that can verify data by type were selected in consideration of local government conditions. A number of errors are first, errors in data construction and management in the Korea Land use Information System, and second, errors in lack of expertise that occur while the local government officials maintain data. Third, it was analyzed as an error from the relationship between the serial cadastral map and the zoning DB. Based on the above results, it is hoped that the results of this study will be reflected in the establishment of the KLIP and the reform of the legal system, which is currently underway after the establishment of the 「3rd the Korea Land use Information System Construction Plan」.

방송대학 디지털라이브러리 시스템 구축(오디오/비디오 자료를 중심으로)

  • 곽덕훈
    • Proceedings of the Korea Database Society Conference
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    • 1998.09a
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    • pp.313-326
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    • 1998
  • DL의 필요성ㆍ방대한 데이터의 효율적 관리와 재활용ㆍ아날로그 매체의 보관장소 및 열화 문제해소ㆍ대학본부와 지역학습관 사이의 효과적 자원공유ㆍ실시간 단방향 방송의 제한성 극복ㆍ학생과 방송대의 상호작용성 증진ㆍ인터넷을 활용한 ON-DEMAND 교육 ◆업무분석 및 요구사항에 따른 정확한 설계 ◆용도별 하드웨어 시스템 설계 ◆네트워크 대역폭의 효율적 적용 - 모뎀 환경, LAN 환경 ◆사용자 접속환경을 고려한 Network 설정 - 전용망 : T1급 이상 ◆타 시스템과 연계 및 확장성(중략)

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