摘要
为了解决目前地理信息发现查全率和查准率不高的问题,提出了一种简单语义的地理信息服务发现方法。该方法引入虚拟文档的概念,将服务划分为"操作级"进行匹配;运用同义词对服务操作中的概念词汇进行简单语义扩展;引入词汇语义相似度概念,应用词汇语义库来实现地理信息服务的简单语义匹配。实验结果表明,文中提出的方法在查全率和查准率等性能上均优于基于关键字和向量空间模型的方法,且完全基于当前网络服务环境实现。
The recall and precision rate of current geographical information service discovery are low,in order to solve the problems,a simple semantic-based method of geographical information service discovery is proposed.This method introduces the concept of virtual document,and with this method services are partitioned into opertations to be matched.Synonyms are used to extend the concepts of service operations in terms of simple semantic.The concept of lexical semantic similarity is introduced,and lexical library is used to realize geographical information service semantic matching.Experiment results show that the recall and precision rate performance of this method are better than Keywords-based method and vector space model-based method,and it is realized only based on current network service environment.
出处
《地理信息世界》
2012年第3期31-35,共5页
Geomatics World
基金
国家863计划项目(2009 AA 12 Z 228)
关键词
地理信息服务发现
虚拟文档
服务操作
词汇语义
相似度
geographical information service discovery,virtual document,service operation,lexical semantic,similarity
