饮水安全工程信息的元数据分级索引算法

A metadata classification indexing algorithm for drinking water safety project information

分析了当前饮水安全工程数据的发展趋势和主要类型,根据饮水安全工程数据的特点,提出了一种应用型的饮水安全核心元数据模型,设计了饮水安全工程核心元数据的结构和内容,将饮水安全工程核心元数据分为标识信息、数据质量信息、内容信息、空间参照系信息和分发信息五个部分,并且分别描述了五个部分的结构。同时,设计了符合饮水安全工程元数据的元数据分级算法,比较了元数据分级算法和目录子树分区算法以及哈希算法的实验结果。

The current developmental trends and the main types of the drinking water safety project data are analyzed.Considering the characteristics of the drinking water safety project data,a core metadata model applied in the drinking water safety is proposed,and the structure and content of the core metadata of the drinking water safety project are designed.The core metadata of the drinking water safety project can be divided into five parts：identity information,data quality information,content information,space reference information and distribution information whose construction is described respectively.A metadata classification algorithm is designed,which conforms to the drinking water safety project data.The metadata classification indexing algorithm improves the management and work efficiency of rural drinking water safety compared with the subtree partitioning algorithm and the Hash algorithm.