摘要
为了实现对供电企业信息方便、任意地查询,文章提出将不同供电企业管理信息系统数据转换为XML文档格式的思路,建立基于XML文档的分布式供电企业信息检索机制,设计了一种新的XML索引结构,基于该索引结构的检索算法对用户输入的关键词和条件形成查询表达式。针对不同检索条件采用不同控制策略,可以实现对文本内容和数值内容的检索及确定信息和不确定信息的检索。应用该算法对变电站XML文档数据进行检索,结果表明该算法准确、高效,具有较高的推广价值。
In order to realize information query seamlessly and conveniently, this paper puts forward an idea which data from different MIS of power supply enterprises is translated into XML document, then an information retrieval mechanism based on XML in decentralized and heterogeneous system is established. A new XML index structure is designed, and according to query algorithm based on the index structure, query expression on condition of input information and key words is formed. Different control strategies are adopted based on different retrieval conditions to realize retrievals of text and numerical value as well as the retrievals of certain and uncertain information. This algorithm is applied to search XML documents data. The results show that it is accurate and efficient, and has some popularization value.
出处
《电力系统通信》
2008年第3期56-59,64,共5页
Telecommunications for Electric Power System
关键词
XML
索引
信息检索
XML
index
information retrieval
power supply enterprise
