摘要
引入地理信息服务本体的概念,提出了本体驱动的地理信息服务发现模型,研究了地理信息服务的多级匹配算法,通过量化地理信息服务的功能相似度和信誉相似度,根据待选服务和服务请求之间的相似度阈值,对服务进行匹配和筛选。设计了本体驱动的地理信息服务注册中心,从查全率、查准率、响应时间、副本负载等指标对本体驱动的地理信息服务发现进行了测试。结果证明,该模型具有查全率和查准率高、动态负载平衡等特点。
Abstract： We propose an ontology-driven discovering model of geographical information services to improve the recall and the precision of geographical information services, study the multilevel matching arithmetic of geographical information services. This arithmetic fil- ters and matches the services in service register center according as the similarity between N services selected with services requested through defining the function similarity and credit standing similarity. The matching arithmetic, geographical information services ontology, and semantic describing form the discovering model. The results show that the onto driven discovering model is excellent in recall and precision, and can maintain dynamic ogy oad ing balance of service copy.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2009年第6期641-645,658,共6页
Geomatics and Information Science of Wuhan University
基金
2007年信息工程大学博士研究生学位论文创新基金资助项目
关键词
本体驱动
服务发现
功能相似度
信誉相似度
查全率
查准率
负载平衡
ontology-driven
service discovering
function similarity
credit similarity
recall
precision
loading balance
