| 自动化地理信息综合的发展现状和趋势 |
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| 引用本文： | 孟丽秋.自动化地理信息综合的发展现状和趋势[J].测绘学院学报,1996(2). |
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| 作者姓名： | 孟丽秋 |
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| 摘 要： | 本文在强调地理信息综合对于开发和应用地理信息系统的必要性的同时，阐述了区分模型综合和图像综合在新环境下的实用意义，并总结了欧洲和北美地区在自动化综合研究方面所作的主要努力。通过分析现阶段综合方法和编程语言的特点，指出了现有计算机综合系统由于缺乏专家知识而存在的缺陷和局限性，并相应地介绍和讨论了知识获取和表达的几种实用方法。最后，列举了开发未来高智能自动化综合系统应当注意的问题和必须具备的条件。
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| 关 键 词： | 地理信息系统，地理信息自动综合，模型综合，图像综合，基于知识的系统 |
The State of the Art of Automatic Generalization of Geographic information and Trends of Development |
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| Meng Liqiu.The State of the Art of Automatic Generalization of Geographic information and Trends of Development[J].Journal of Institute of Surveying and Mapping,1996(2). |
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| Authors: | Meng Liqiu |
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| Abstract: | Since decades. researchers in the field of cartography and GIS have been aware of the fact: A safe. flexible and economical manipulation of tremendous data amount can only be realized. when a useroriented and/or purposeoriented data set from source data model could be created automatically by means of generalization. Automatic generalization might be a narrow or even strange topic for general public.'but it serves as an essential bridge linking the original source data with the wide spectrum of GIS applications. While the necessity of generalization is reiterated throughout the paper. the author also highlights the pragmatic division between model generalization and graphic generalization. and summarizes major efforts made in Europe an.d North America. Based on the analysis of available generalization methods and prevailing programming paradigms. drawbacks as well as limitations of existing generalization systems caused by insufficient expert knowledge are pointed out. Correspondingly. a number of practical strategies of knowledge acquisition and knowledge representation are introduced and discussed. Finally. a series of major concerns are enumerated for the development of intelligent compute generalization systems and the prerequisite of an intelligent system is stated. |
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| Keywords: | Geographic informetion system Automatic generalization of geographic information Modle generalization Graphic generalization Generalization system based on the knowledge |
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