中文摘要：

在导航电子地图中，针对驾车任务的POI自适应表达是提高导航电子地图信息传输效率的关键。针对这一问题，提出了基于重要性权值的驾车导航POI表达规则。首先，分析了POI重要性权值的影响因素；其次，从影响因素出发，研究了基于权值的POI规则表达的各规则项；最后，设计了POI自适应表达规则库，并在嵌入了数据处理规则库的绘图软件上进行了技术实现。试验结果表明，利用基于权值的POI表达规则进行地图表达，可以提高地图内容的层次性与清晰性，优化驾车导航服务。

英文摘要：

The POI adaptive expression for driving tasks is the key to improve the efficiency of navigation electronic map information transmission. Aiming at this problem, the research on POI expression rules of driving navigation based on significant priority were proposed. Firstly, the influence factors of POI significant priority was analyzed. Then based on the influence factors, the rules of POI rides expression based on the weights were studied. Finally, the POI adaptive expression rules base was designed which was realized by using the drawing software embedded in the data processing rule base. The experiment results showed that map expression by using POI expression rules based on the weight, could improve the hierarchy and clarity of the map and serve the driving navigation effectively.