• Title/Summary/Keyword: 공간 분석

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A Spatial Statistical Approach to Residential Differentiation (II): Exploratory Spatial Data Analysis Using a Local Spatial Separation Measure (거주지 분화에 대한 공간통계학적 접근 (II): 국지적 공간 분리성 측도를 이용한 탐색적 공간데이터 분석)

  • Lee, Sang-Il
    • Journal of the Korean Geographical Society
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    • v.43 no.1
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    • pp.134-153
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    • 2008
  • The main purpose of the research is to illustrate the value of the spatial statistical approach to residential differentiation by providing a framework for exploratory spatial data analysis (ESDA) using a local spatial separation measure. ESDA aims, by utilizing a variety of statistical and cartographic visualization techniques, at seeking to detect patterns, to formulate hypotheses, and to assess statistical models for spatial data. The research is driven by a realization that ESDA based on local statistics has a great potential for substantive research. The main results are as follows. First, a local spatial separation measure is correspondingly derived from its global counterpart. Second, a set of significance testing methods based on both total and conditional randomization assumptions is provided for the local measure. Third, two mapping techniques, a 'spatial separation scatterplot map' and a 'spatial separation anomaly map', are devised for ESDA utilizing the local measure and the related significance tests. Fourth, a case study of residential differentiation between the highly educated and the least educated in major Korean metropolitan cities shows that the proposed ESDA techniques are beneficial in identifying bivariate spatial clusters and spatial outliers.

Computing Methods for Generating Spatial Random Variable and Analyzing Bayesian Model (확률난수를 이용한 공간자료가 생성과 베이지안 분석)

  • 이윤동
    • The Korean Journal of Applied Statistics
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    • v.14 no.2
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    • pp.379-391
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    • 2001
  • 본 연구에서는 관심거리가 되고 있는 마코프인쇄 몬테칼로(Markov Chain Monte Carlo, MCMC)방법에 근거한 공간 확률난수 (spatial random variate)생성법과 깁스표본추출법(Gibbs sampling)에 의한 베이지안 분석 방법에 대한 기술적 사항들에 관하여 검토하였다. 먼저 기본적인 확률난수 생성법과 관련된 사항을 살펴보고, 다음으로 조건부명시법(conditional specification)을 이용한 공간 확률난수 생성법을 예를 들어 살펴보기로한다. 다음으로는 이렇게 생성된 공간자료를 분석하기 위하여 깁스표본추출법을 이용한 베이지안 사후분포를 구하는 방법을 살펴보았다.

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공간데이터마이닝에서의 유전자알고리즘을 이용한 예측방법연구

  • 김효정;강한구;강창완
    • Proceedings of the Korean Statistical Society Conference
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    • 2001.11a
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    • pp.95-97
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    • 2001
  • 공간자료의 예측문제에 있어 전통적 예측방법인 크리깅방법과 최근 통계적문제 적용되기 시작한 신경망분석방법 간의 비교를 사례연구를 통해 행하였다. 일반적으로 크리깅에 의한 선형예측은 공간자료에 대한 일반적 통계모형으로서 간주되어 왔다. 한편 예측문제에 있어 뉴럴네트워크에 기초한 비모수적 방법이 관심의 대상이 되고 있으며 특히 대용량 자료의 경우 데이터마이닝 기법의 한 분야로 널리 사용되고 있는 실정이다. 본 연구에서는 공간 자료의 예측에 있어 유전자 알고리즘을 신경망분석 모형을 결합하여 기존의 크리깅방법과의 예측력을 비교한다.

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Analyzing a Korean Blogosphere over Time (시간의 흐름에 따른 한국 블로그 공간의 변화 분석)

  • Ha, Ji-Woon;Bae, Duck-Ho;Kim, Sang-Wook
    • Proceedings of the Korea Information Processing Society Conference
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    • 2011.04a
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    • pp.1272-1273
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    • 2011
  • 블로그 공간은 블로거들의 이동 및 블로거들의 행동에 의해 시간에 따라 지속적으로 변화한다. 이러한 블로그 공간의 변화를 분석함으로써 블로그 공간이 발전해 온 경향을 알 수 있으며, 나아가 향후 발전 과정을 예측할 수 있다. 본 논문에서는 한국 블로그 공간의 구조적 특성이 시간의 흐름에 따라 변화하는 모습을 심도 있게 분석한다.

Comparison Analysis Among Each Site Scale Evaluation Against Outdoor Space of Multi-Family Housing Complex (공동주택 옥외공간에 대한 단지규모별 비교평가 분석)

  • Choi, Yeol;Yim, Ha Kyoung;Cheong, Un Bin
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.29 no.1D
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    • pp.91-100
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    • 2009
  • The aim of this paper is to examine satisfaction of residents and preference on the outdoor space's design by multi-family housing complex scale. So we divide outdoor space into space for green land, space for physical training and play, space for walking and space for rest and landscape facilities. The major findings of this analysis are follows : Multi-family housing complex scale is the bigger, it is recognized by same ratio on specific outdoor space in housing complex that are space for green land, space for physical training and play, space for rest and landscape facilities. And space for physical training and play is found commonly into the poorest space in housing complex. Evaluation for resident's perception on outdoor space by multifamily housing complex scale shows that housing complex scale is the bigger, resident's satisfaction is the lower. That means that housing complex of large scale can't satisfy the diverse resident's demand.

Ascertaining the Structure and Content of a National Scholarly Web Space Based on Content Analysis (내용 분석을 통한 한국의 학술적 웹 공간 구조 분석)

  • Chung, Young-Mee;Yu, So-Young
    • Journal of the Korean Society for information Management
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    • v.26 no.3
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    • pp.7-24
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    • 2009
  • Since the Web is dynamic, it is necessary to analyze scholarly Web space with both quantitative and qualitative methods for better understanding of communication characteristics. In this study, we analyzed contents of pages and links to ascertain the characteristics of Korean scholarly Web space in terms of network structure and communication behavior. The result shows that the structure of the original network with all the external links remained is not much different from that of the network with activated external links only. However, the purposes of linking vary among scholarly institutions. The centrality measures correlate more strongly with the clustering coefficient than with the constraint index implying the similar explanatory power of the two types of structural indices.

A Study on Selection of the Suitable Sites to Calculate the Optimized Path (최적경로 산출을 위한 경과지역 선정에 관한 연구)

  • Kim, Woo-Sun;Sohn, Hong-Gyoo;Heo, Joon;Lee, Jung-Bin
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • 2008.06a
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    • pp.501-502
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    • 2008
  • 특정 지역에 대한 공간 분석을 하기 위해서는 많은 요소들을 고려해야 한다. 예를 들어 시설물을 설치한다거나 경과지역 내에서의 공간 분석이 필요할 경우, 법적 제한 요건 및 지형적 특성에 따라 공간 분석 패턴들을 다양하게 생성할 수 있기 때문이다. 이에 올바른 분석 기법의 선정이나 정확한 자료들의 수집은 필수적이라 할 수 있겠다. 따라서 본 연구에서는 해당 지역 내에서의 경과지 선정 기준을 알아보고 그에 따른 저항치와 경중률을 계산하여 각각의 지형적 요소에 적용시켜 분석을 실시하였다. 그리고 분석 시에는 Corridor와 같은 GIS 공간분석기법을 이용하여 해당 지역 내의 송전 철탑 설치를 위한 최적 경과지와 최적 경로를 선정하였다.

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공간 도형의 조작적 활동을 위한 학습 자료 개발 연구

  • Sin, Hyeon-Yong;Han, In-Gi
    • Communications of Mathematical Education
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    • v.11
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    • pp.403-414
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    • 2001
  • 공간 지각력의 개발 ${\cdot}$ 육성은 수학교육의 중요한 목표들 중의 하나이지만, 중등학교 수학 교과서를 분석해 보면, 공간 도형에 대한 조작적 활동의 경험은 매우 빈약하다. 특히, 중학교에서는 1학년에서 공간도형의 계량적 측면에 중심을 두고 취급하고 있지만, 이를 통해 수학교육에서 추구하는 교육목표를 달성하기는 어렵다. 본 연구에서는 중학교 학생들이 공간 도형에 대해 다각적인 측면에서 분석적이고 조작적 활동을 경험하며, 이를 통해 공간 도형에 대한 상상력, 그리고 공간 도형에서의 추론 활동 경험을 제공할 수 있는 학습 자료를 개발하여 제시할 것이다.

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Mapping Time-distance Cartogram and the Accessibility Analysis in Korea (시간거리 접근성 카토그램 제작 및 접근성 공간구조 분석)

  • Kim, So-Yeon;Lee, Keum-Sook
    • Journal of the Economic Geographical Society of Korea
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    • v.9 no.2
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    • pp.149-166
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    • 2006
  • The purpose of this study is to produce time-distance cartograms based on the various Korean transportation networks, and to analyze the spatial structure of time-distance accessibilities. For the purpose this study attempts to develop continuous area cartogram by utilizing Wolf's algorithm for creating contiguous cartogram in ArcGIS 9. The absolute physical space was transformed to the functional space indexed by time-distances along various transportation networks in Korea. We examined the differences in the time-distance accessibilities among transportation networks. This study makes a comparison between the spatial structure of time-distance accessibility of KTX network with them of existing railroad network, as well as with them of road network. In order to clarify the spatial structures of time-distance accessibilities, we restructured them on the time-distance circular diagrams and performing Multi-Dimensional Scaling analysis. Overall structure of time-distance accessibilities shows similar patterns: The time distances are shrinked a lot along the Seoul-Busan axis, while coastal parts, in particular the eastern part of the county, are shrinked relatively little via all transportation networks. The Road network affects significantly on the accessibilities of cities in Gangwon-do and Gyeonggi-do, while railway network affects on the accessibilities of cities in Jeolla-do and Gyeongsang-do in general. When we compared the time-distance accessibilities based on the 5 largest cities, Seoul appears as the most accessible city from/to all other cities in Korea. We can also find significant changes in the time-distance accessibility between KTX network and existing railroad network. Cities along the KTX network, in particular cities which has KTX stops, improved significantly in time-distance accessibilities.

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Geospatial Analysis and Modeling in Korea: A Literature Review (한국의 지리공간분석 및 모델링 연구)

  • Lee, Sang-Il;Kim, Kam-Young
    • Journal of the Korean Geographical Society
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    • v.47 no.4
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    • pp.606-624
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    • 2012
  • The main objective of this paper is to provide an adequate and comprehensive review of what has been done in South Korea in the field of geospatial analysis and modeling. This review focuses on spatial data analysis and spatial statistics, spatial optimization, and geosimulation among various aspects of the field. It is recognized that geospatial analysis and modeling in South Korea got through the initial stage during the 1990s when computer and analytical cartography and GIS were introduced, moved to the growth stage during the first decade of the $21^{st}$ century when there was a surge of relevant researches, and now is heading for its maturity stage. In spatial data analysis and spatial statistics, various topics have been addressed for spatial point pattern data, areal data, geostatistical data, and spatial interaction data. In spatial optimization, modeling and applications related to facility location problems, districting problems, and routing problems have been mostly researched. Finally, in geosimulation, while most of research has focused on cellular automata, studies on agent-based model and simulation are in beginning stage. Among all these works, some have fostered methodological advances beyond simple applications of the standard techniques.

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