Loo Becky P Y
Department of Geography, The University of Hong Kong, Pokfulam, Hong Kong.
Accid Anal Prev. 2006 Sep;38(5):879-86. doi: 10.1016/j.aap.2006.02.012. Epub 2006 Mar 30.
In this paper, the spatial variables of the crash database in Hong Kong from 1993 to 2004 are validated. The proposed spatial data validation system makes use of three databases (the crash, road network and district board databases) and relies on GIS to carry out most of the validation steps so that the human resource required for manually checking the accuracy of the spatial data can be enormously reduced. With the GIS-based spatial data validation system, it was found that about 65-80% of the police crash records from 1993 to 2004 had correct road names and district board information. In 2004, the police crash database contained about 12.7% mistakes for road names and 9.7% mistakes for district boards. The situation was broadly comparable to the United Kingdom. However, the results also suggest that safety researchers should carefully validate spatial data in the crash database before scientific analysis.
本文对1993年至2004年香港碰撞事故数据库的空间变量进行了验证。所提出的空间数据验证系统利用了三个数据库（碰撞事故、道路网络和区议会数据库），并依靠地理信息系统（GIS）来执行大部分验证步骤，从而可大幅减少人工检查空间数据准确性所需的人力资源。借助基于GIS的空间数据验证系统发现，1993年至2004年警方的碰撞事故记录中约65%-80%具有正确的道路名称和区议会信息。2004年，警方碰撞事故数据库中道路名称的错误率约为12.7%，区议会信息的错误率为9.7%。这种情况与英国大致相当。然而，结果也表明安全研究人员在进行科学分析之前应仔细验证碰撞事故数据库中的空间数据。
