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Realization of Geographic Information Systems with High-Quality Processing Based on Computational Geometry

Research Project

Project/Area Number 09558029
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field 計算機科学
Research Institutionthe University of Tokyo

Principal Investigator

IMAI Hiroshi  Graduate School of Science, the University of Tokyo Assoc.Prof., 大学院・理学系研究科, 助教授 (80183010)

Co-Investigator(Kenkyū-buntansha) IMAI Keiko  Chuo University, Fac.Sci.Tech., Prof., 理工学部, 教授 (70203289)
INABA Mary  Graduate School of Science, the University of Tokyo Lecturer, 大学院・理学系研究科, 講師 (60282711)
ASAI Ken-ichi  Graduate School of Science, the University of Tokyo Research Assistant, 大学院・理学系研究科, 助手 (10262156)
TOKUYAMA Takeshi  Tohoku University, GSIS, Prof., 大学院・情報科学研究科, 教授 (40312631)
KUBOTA Koichi  Chuo University, Fac.Sci.Tech., Assoc.Prof., 理工学部, 助教授 (90178046)
Project Period (FY) 1997 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥12,800,000 (Direct Cost: ¥12,800,000)
Fiscal Year 2000: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1999: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1998: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1997: ¥4,200,000 (Direct Cost: ¥4,200,000)
Keywordsgeographical information system / computational geometry / robust computation / geographical database / Voronoi diagram / vehicle routing / 単体複体 / 3角形分割 / マッチング / 自動微分 / 頑健性
Research Abstract

In this research, geographical information systems (GIS for short) as well as intelligent transport systems (ITS for short) have been investigated from the viewpoint of computational geometry to meet emerging demands to realize high-quality, robust and fast systems in both fields. From the viewpoint of computational geometry, we also developed efficient geometric clustering algorithms, both in Euclidean and information geometric spaces, and applied them to geographical data mining. Also, map labeling problem and map matching problems are studied.
Specifically, by using robust algorithm to construct the Voronio diagram and Delaunay triangulation of points in the plane, we developed an efficient and simple method of computing the medical axis, as central lines of roads, for town maps. With such nice tools, this kind of seemingly complicated problem can be solved in practice in a very precise manner. Concerning the map labeling problem, subway maps are intensively studied where labels corresponding to each subway line are automatically placed in a beautiful way. Concerning ITS, we have proposed an intelligent algorithm to find meaningful detours for high-level car navigation. Also, a new method of measuring traffic flows from simple sensor data derived at two distant points is presented. The Voronoi diagram has bee used directly in GIS, and we generalize it to the diagram in statistical parameter space. When GIS is combined with other data such as population data, the space becomes higher-dimensional geometric space, to which our generalized diagrams can be used to find proximity relations, etc., by using computational-geometric algorithms.

Report

(5 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (42 results)

All Other

All Publications (42 results)

  • [Publications] N.Park,H.Okano and H.Imai: "A Path-Exchange-Type Local Search Algorithm for Vehicle Routing and Its Efficient Search Strategy"Journal of the Operations Research Society of Japan. 43,1. 197-208 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Imai,K.Imai,K.Inaba and K.Kubota: "GIS and ITS Infrastructures in Japan-Standardization and Network-Algorithmic Applications"Proceedings of the International Workshop on Emerging Technologies for Geo-Based Applications. 153-167 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Imai and M.Inaba: "Geometric Clustering by Divergence and Its Underlying Discrete Proximity Structures"IEICE Trans.Information and Systems. E83-D,1. 27-35 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Inaba,N.Katoh and H.Imai: "Variance-Based κ-Clustering Algorithms by Voronoi Diagrams and Randomization"IEICE Trans.Information and Systems. E83-D,6. 1199-1206 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Asano and H.Imai: "Practical Efficiency of the Linear-Time Algorithm for the Single Source Shortest Path Problem"Journal of the Operations Society of Japan. 431-447 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Osogami and H.Imai: "Classification of Various Neighborhood Operations for the Nurse Scheduling Problem"Lecture Notes in Computer Science. 1969. 72-83 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Asano,H.Imai,D.T.Lee,S.Nakano,T.Tokuyama,eds.: "Computing and Combinatorics"Spriger-Verlag. 494 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 今井浩 編集: "特集:計算幾何の拡がり-情報科学・応用数理・数学にまたがる発展"サイエンス社. No.433 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] N.Park, H.Okano and H.Imai: "A Path-Exchange-Type Local Search Algorithm for Vehicle Routing and Its Efficient Search Strategy"Journal of the Operations Research Society of Japan. 43, 1. 197-208 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Imai, K.Imai, K.Inaba and K.Kubota: "GIS and ITS Infrastructures in Japan - Standardization and Network-Algorithmic Applications"Proceedings of the International Workshop on Emerging Technologies for Geo-Based Applications. 153-167 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Imai and M.Inaba: "Geometric Clustering by Divergence and Its Underlying Discrete Proximity Structures"IEICE Trans.Information and Systems. E83-D, 1. 27-35 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Inaba, N.Katoh and H.Imai: "Variance-Based ^k-Clustering Algorithms by Voronoi Diagrams and Randomization"IEICE Trans.Information and Systems. E83-D, 6. 1199-1206 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Asano and H.Imai: "Practical Efficiency of the Linear-Time Algorithm for the Single Source Shortest Path Problem"Journal of the Operations Society of Japan. 431-447 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Osogami and H.Imai: "Classification of Various Neighborhood Operations for the Nurse Scheduling Problem"Lecture Notes in Computer Science. 1969. 72-83 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Asano, H.Imai, D.T.Lee, S.Nakano, T.Tokuyama, eds.: "Computing and Combinatorics"Spriger-Verlag. 494 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Imai, ed.: "Expansion of Computational Geometry -Information Science, Applied Mathematics and Mathematics"Science-sha. No.433 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Imai,K.Imai,K.Inaba and K.Kubota: "GIS and ITS Infrastructures in Japan-Standardization and Network-Algorithmic Applications"Proceedings of the International Workshop on Emerging Technologies for Geo-Based Applications. 153-167 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Imai and M.Inaba: "Geometric Clustering by Divergence and Its Underlying Discrete Proximity Structures"IEICE Trans.Information and Systems. E83-D,1. 27-35 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Inaba,N.Katoh and H.Imai: "Variance-Based κ-Clustering Algorithms by Voronoi Diagrams and Randomization"IEICE Trans.Information and Systems. E83-D,6. 1199-1206 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Inaba and H.Imai: "Geometric Clustering for Multiplicative Mixtures of Distributions in Exponential Families"Proceedings of the 12th Annual Canadian Conference on Computational Geometry. 195-196 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Asano and H.Imai: "Practical Efficiency of the Linear-Time Algorithm for the Single Source Shortest Path Problem"Journal of the Operations Society of Japan. 431-447 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Osogami and H.Imai: "Classification of Various Neighborhood Operations for the Nurse Scheduling Problem "Lecture Notes in Computer Science. 1969. 72-83 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Inaba and H.Imai: "The Number of Partitions of ηPoints Induced by the Voronoi Diagram via the Conjugacy Generated by κPoints"Proceedings of the 1st Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications. 83-90 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 田島玲,今井浩: "三角形分割の最適性と整数計画による定式化"情報処理学会論文誌. 40,7. 2861-2871 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 今井浩: "GIS標準化の動向"電子情報通信学会技術報告. DE99-5. (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Inaba,H.Imai and K.Sadakane: "Voronoi Diagram and Clustering in Information Geometry-Their Computational and Combinatorial Complexity"1999 Workshop on Information-Based Induction Sciences (IBIS'99). 45-62 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] A.Tajima and H.Imai: "Cutting Planes for IP-based Optimization of Geometric Triangulation"Proceedings of Japan Conference on Disc. and Computational Geometry'99. 58-60 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] N.Park,H.Okano and H.Imai: "A Path-Exchange-Type Local Search Algorithm for Vehicle Routing and Its Efficient Search Strategy"Journal of the Operations Research Society of Japan. 43,1(印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Asano,H.Imai,D.T.Lee,S.Nakano,T.Tokuyama,eds.: "Computing and Combinatorics"Spriger-Verlag. 494 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 今井浩編集: "特集:計算幾何の拡がり-情報科学・応用数理・数学にまたがる発展"サイエンス社. No.433 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Imai,S.Sumino and H.Imai: "Minimax Geometric Fitting of Two Corresponding Sets of Points and Dynamic Furthest Voronoi Diagrams" IEICE Transactions on Information ans Systems. vol.E81-D No 11. 1162-1171 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Keiko Imai and Hiroshi Imai: "Dynamic Weighted Voronoi Diagraws and Weighted Plinimax Matching of Two Corresponding Point Sets" Optimization Methods and Software. vol.10. 261-274 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Imai,H.Imai and T.Tokuyama: "Meximin Location of Convex Objects in a Polygen and Related Veronoi Diagrams" Journal of the Operations Research Society of Japan. vol.42,No.1(掲載予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Shibuya,H.Imai,S.Nishimura,H.Shimoura and K.Tenmoku: "Finding Useful Detocos in Geographical Databases" IEICE Transactions on Information ans Systems. vol.E82-D No.1. 282-290 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Inaba and H.Imai: "Geometry Helps Clustering Objects in Text and Image Databases -Utilizing Geometry of the Vector space Model for Texts and the Feature Space Model for Images" In “Advanced Database Systems for Integration of Media and User Environment'98 World Society". 15-20 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Sadakane,H.Imai,K.Onishi,M.Inaba,F.Takeuchi and K.Imai: "Voronoi Diagrams by Divergences with Additive Weights" Proceedings of the 14th Annual ACM Symposium on Computational Geometry. 403-404 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Shibuya, H.Imai, S.Nishimura, H.Shimoura and K.Tenmoku: "Detour Queries in Geographical Database for Navigation and Related Algorithm Animations." Proc.Int.Symp.on Cooperative Database Systems for Advanced Applications. 246-253 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Inaba, H.Imai, M.Nakade and T.Sekiguchi: "Application of an Effective Geometric Clustering Method to the Color Quantization Problem." Proc.13th ACM Symposium on Computational Geometry. 447-478 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Onishi and H.Imai: "Voronoi Diagram in Statistical Parametric Space by Kullback-Leibler Divergence." Proc.13th ACM Symposium on Computational Geometry. 463-465 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] F.Takeuchi and H.Imai: "Enumerating Triangulations for Products of Two Simplices and for Arbitrary Contigurations of Points." Lecture Notes in Computer Science. Vol.1276. 470-481 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Inaba and H.Imai: "Geometric Clustering and Its Application." International Symposium on Mathematical Programming(ISMP'97). (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Onishi and H.Imai: "Voronoi Diagrams for an Exponential Family of Probability Distributions in Information Geometry" Japan-Korea Joint Workshop on Algorithms and Computation. 1-8 (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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