2011 Fiscal Year Final Research Report
Research on data structures and optimization problems in GIS
| Project/Area Number |
21500021
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fundamental theory of informatics
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| Research Institution | Chuo University |
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Principal Investigator |
IMAI Keiko 中央大学, 理工学部, 教授 (70203289)
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| Co-Investigator(Kenkyū-buntansha) |
TORIUMI Shigeki 中央大学, 理工学部, 助教 (60455441)
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| Co-Investigator(Renkei-kenkyūsha) |
IMAI Hiroshi 東京大学, 大学院・情報理工学系研究科, 教授 (80183010)
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| Project Period (FY) |
2009 – 2011
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| Keywords | アルゴリズム理論 |
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| Research Abstract |
In the Geographic Information Systems(GIS), there are a lot of optimization problems. In order to solve such problems, efficient data structures and algorithms that deal with a large amount of GIS data are strongly required. We developed data structures and algorithms for optimization problems in GIS, for example, a problem of deciding school-commuting routes for elementary school students, facility location problems in times of disaster, etc. We also analyzed marine transportation using a time-space network. Moreover, from a theoretical point of view, we proposed two approximation algorithms for a minimum maximal matching problem that have a strong relationship with minimum maximal flow problem in traffic flow.
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