Researches on Evaluation for Quality of Active Geospatial Information Service

Currently,the passive aspects of geospatial information service (GIS) and the unpredictability of QoGIS are unable to meet the applications in some deeper fields. A new evaluation system of quality of active geospatial information service (QoAGIS) is presented. The connotation and logical structure of AGIS is analyzed,in which it advanced basic event and its expression,event operation's methods,the expression of complex event and the driven rules,the indices of QoAGIS evaluation are presented,in which the intrinsic quality index and the generalized quality index are researched on. Finally the compositive evaluation index is calculated. The QoAGIS evaluation system has been used in an application of AGIS,the experiment indicated its adaptation and reliability.