1997 Fiscal Year Final Research Report Summary
Hierarchical Graph Model for Incremental Data Organization
| Project/Area Number |
07680443
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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 |
情報システム学(含情報図書館学)
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| Research Institution | KANSAI University |
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Principal Investigator |
UESHIMA Shinichi KANSAI University, Faculty of Informatics, Professor, 総合情報学部, 教授 (10184920)
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| Co-Investigator(Kenkyū-buntansha) |
SHIBATA Hajime KANSAI University, Faculty of Letters, Associate Professor, 文学部, 助教授 (60268307)
MORISHITA Jun-ya KOBE University, Faculty of Cross-cultural Studies, Associate Professor, 国際文化学部, 助教授 (20182230)
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| Project Period (FY) |
1995 – 1997
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| Keywords | View / Object Model / Graph / Scientific Database |
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| Research Abstract |
In this research, we have proposed the hierarchical graph model that enables flexible structuring of semistructured data incrementally. Here we focus on the ways to collect data and add attributes to them in a trial and error manner. In this model, hierarchical grpah is defined as a directed graph. We treat "viewpoints" as data expicitly, and treat both semi-structured data and viewpoints as nodes on the graph. The graph consists of component objects and a graph object. The former possess the attributes of data and "viewpoints." The latter holds their relations. By this model, users can give multiple representations of semi-structured data based on user's viewpoints. We introduce virtual objects in order to support the structuring according to user's ad-hoc intuitions or hypotheses. Users can generate virtual objects at run-time, and treat them as data in our model. We have also shown a prototype system, and showed capabilities of our model.
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[Publications] Ueshima, S., Ohtsuki, K., Morishita, J., Oian, Q., Oiso, H.and Tanaka, K.: ""Incremental Data Organization for Ancient Document Databases, "" Proc.of the 4th International Conference on Database Systems for Advanced Applications (DASFAA'95) Singapore, Apr. 457-466 (1995)
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