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资源环境模型库管理系统研究进展 被引量:4

Progress in Management System of Resource and Environmental Modelbase
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摘要 资源环境模型库管理系统是资源环境研究中的关键问题之一。建立资源环境模型库管理系统通常有两种途径。一种途径是采用模型管理技术,其主要方法包括数据式模型管理、结构化模型管理、面向对象的模型管理和基于知识的模型管理,这种方式的优势是可以有效地管理资源环境模型,但对空间数据处理的功能较弱,需要编写大量的程序代码。另一种途径是在GIS中管理模型,如ArcGIS中的ModelBuilder,这种方式的优点是可以充分利用GIS的空间数据处理能力,但对复杂模型的支持较差。根据以上两种方式的特点,本文提出了一种面向对象的资源环境模型管理框架,把模型抽象为模型类与模型实例,采用面向对象方法表达模型,通过构建资源环境模型引擎处理空间数据和模型数学方程;利用模型库和数据库,可以实现模型的有效管理和模型重用。 Management System of Resource and Environmental Model base (MSREM) is one of the essential issues in resource and environmental field. There are usually two ways to develop MSREM, of which one is the model management techniques including database approach, structured modeling approach, object-oriented approach and knowledge-based approach, and another one is model management in GIS software such as Model Builder in ArcGIS. The first way can efficiently manage the models, but requires creating lots of codes to handle spatial data. The second way can utilize GIS to manipulate spatial data, but it doesn't support building complex mathematical models. This paper proposes an object-oriented framework for MSREM, in which models are abstracted to model class and model instance. Model class and model instance are represented as an object. Spatial data and mathematical equation are parsed by Model Engine that is composed of mathematical library and GIS component. Model management and model reuse can be efficiently realized by combination of model base and database.
出处 《地理科学进展》 CSCD 北大核心 2007年第1期77-86,共10页 Progress in Geography
基金 中国科学院知识创新工程重要方向项目(KZCX2-YW-429) 国家科技支撑计划(2006BAC08B04) 国家高技术研究发展计划(2006AA12Z219) 国家科技合作项目(2006DFB919201)
关键词 模型库管理系统 模型实例 模型类 GIS与模型集成 面向对象方法 modelbase management system model instance model class integrate GIS with model object-oriented method
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