Abstract: For the difficulty to detect the frequent changes of geographic information, a method based on information retrieval of monitoring changed geographic information was presented. By designing the search condition, estimating the reliability ranking and analyzing all results by statistics and spatial analysis, the geographic information monitoring based on information retrieval has been realized. Finally the system for monitoring the geographic information change of Hangzhou area was developed, which verified the feasibility and validity of this method and provided a new method to detect the changed geographic information.

Key words: Web, change monitoring, reliability rank, information retrieval, geographical information

摘要： 针对地理信息变化频繁，难以及时发现的问题，提出了一种基于网页信息检索的地理信息变化检测方法，通过设计搜索条件在互联网上收集符合条件的网页，设计评价方法评价搜索结果的可信度，并对最终搜索结果进行统计和空间分析，实现基于网页信息检索技术的地理信息变化检测。以杭州地区为例，开发了基于Web的杭州地区地物变化检测系统，验证了该方法的可行性及有效性,为区域的地物变化检测提供了新方法。

关键词: Web, 变化检测, 可信度评价, 信息检索, 地理信息