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Probing barriers to the integration of geographic information systems and hydrologic models.

机译:探索整合地理信息系统和水文模型的障碍。

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摘要

In spite of considerable interest in using geographic information systems (GIS) in support of environmental modeling, there has been only limited success with integrating GIS and hydrologic models. Technical, semantic, and institutional barriers can cause such a problem. Technical barriers are mainly related to format incompatibility. They are considered a trivial barrier given the extensive research conducted on this issue.; This dissertation hypothesizes that semantic barriers, i.e., misunderstandings of meanings, are the major type of barrier in the integration of GIS and hydrologic models. The goal of this research is to provide a better explanation of the problems facing the integration of GIS and hydrologic models and thus provide guidance toward solving such problems. The probe of institutional barriers is beyond the scope of this study.; Identification of semantic barriers requires comparisons between concepts commonly used in GIS and those used in surface hydrology. Such comparisons require a list of concepts in both GIS and hydrologic models that are semantically rich and internally consistent. Concepts commonly used in GIS were extracted from the United States Spatial Data Transfer Standard. Concepts for surface hydrology were extracted through an analysis of three representative hydrologic models, i.e., HEC-HMS, TOPMODEL, and BLTM. Two tools were used during the extraction of those surface hydrology concepts. First, SNAP/SPAN Ontologies was used to help organize those concepts. Following that Haskell was used to test the consistency and completeness of the results.; The study identified many potential semantic barriers between concepts in GIS and hydrologic models. They fall into five categories: (1) multiple terms that refer to the same concept, (2) inconsistently applied typing system employed in the categorization of concepts, (3) one term that refers to multiple similar concepts, (4) one term that carries an ambiguous concept, and (5) two concepts that partially overlap in meanings. The study found that while it is possible to remove semantic barriers of the first and second types, it is difficult to remove the last three types of semantic barriers. The study therefore concludes that semantic barriers remain a major obstacle toward the integration of GIS and hydrologic models.
机译:尽管使用地理信息系统(GIS)来支持环境建模引起了极大的兴趣,但集成GIS和水文模型的成功仅有限。技术,语义和制度上的障碍都可能导致此类问题。技术障碍主要与格式不兼容有关。考虑到对此问题的广泛研究,它们被认为是微不足道的障碍。本文假设语义障碍(即对意义的误解)是GIS和水文模型集成中的主要障碍类型。这项研究的目的是更好地解释GIS和水文模型集成面临的问题,从而为解决此类问题提供指导。对制度障碍的探讨不在本研究的范围之内。识别语义障碍需要比较GIS中常用的概念和地表水文学中使用的概念。这样的比较需要在GIS和水文模型中都包含语义丰富且内部一致的概念列表。 GIS中常用的概念摘自美国空间数据传输标准。通过分析三种代表性水文模型即HEC-HMS,TOPMODEL和BLTM提取了地表水文学概念。在提取这些地表水文学概念时使用了两种工具。首先,使用SNAP / SPAN本体来帮助组织这些概念。随后,Haskell被用于测试结果的一致性和完整性。该研究确定了GIS中的概念与水文模型之间的许多潜在语义障碍。它们分为五类:(1)引用同一概念的多个术语;(2)概念分类中采用的不一致应用的打字系统;(3)引用多个相似概念的术语;(4)包含一个模棱两可的概念,以及(5)两个含义部分重叠的概念。研究发现,虽然可以消除第一类和第二类语义障碍,但很难消除后三种类型的语义障碍。因此,研究得出结论,语义障碍仍然是GIS和水文模型集成的主要障碍。

著录项

  • 作者

    Feng, Chen-Chieh.;

  • 作者单位

    State University of New York at Buffalo.;

  • 授予单位 State University of New York at Buffalo.;
  • 学科 Geography.; Information Science.
  • 学位 Ph.D.
  • 年度 2004
  • 页码 202 p.
  • 总页数 202
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然地理学;信息与知识传播;
  • 关键词

  • 入库时间 2022-08-17 11:44:01

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