Study On Dynamic Service Computing Of HSOSCS

Spatial-type hot spot consultation system is developing rapidly in recent years,and service-oriented architecture to build the spatial collaborative work systems,contribute to the integration and sharing of distributed geographic data, it is theresearch focus in recent years. However, the service resource diversity and uncertainty,group collaboration demand dynamics and complexity, which make the currentgeographic information service method, can not satisfy the consultation applicationrequirements. Based on the above issues, this thesis will introduced the three-layerservices model into the field of geographic information services, the dynamiccombination of geographic information services and service-based real-timecollaboration are researched by the perspective of parameters, operation and service.Based on the above analysis, the dynamic service calculation method of spatial-typehot spot consultation system is proposed. The specific work of the thesis is as follow:1. Study the architecture and the construction methods of the spatial-type hotspot consultation, analysis of the problems faced by geographic information servicesapplications in the consultation system, proposed the idea of dynamic service-computing solution.2. Analysis the development of geographic information from static to dynamic,According to the three-layer model of the service, and three levels of the parameters,operation and service perspective, proposed the dynamic service calculated of twoservice models in consultation scene, explicit the dynamic service computing meaningin spatial-type hot spot consultation system; In the analysis of the dynamic servicecalculations facing the service relationship modeling, parameter matching andoperating orderly cooperative put forward calculation of the overall technicalframework for dynamic service based on the three-layer cooperative relations.3.Based on the existing service relationship and spatial features relationship ofclassification, presents the three types relationship of parameter level, and the fourtypes relationship of service level, and study its formal expression; In the analysis ofuser, data, service function and service quality of the semantic foundation, putforward to face the collaborative geographic information services of four layers ofsemantic constraints model and the corresponding geographic information servicedescription of four tuples model, and utilized the OWL-S realize the services ofsemantic description. 4.This thesis proposed the geographic information service of dynamiccomposition method based on the service relationship. The studies take into accountthe mapping between the semantics of geographic information services of the servicerelationship with ebRIM information registration model, to build the serviceregistration framework; Service management perspective defines two geographicinformation service collection, put forward service creation and maintenance method;According to the spatial properties of geographic information service, presented theservice spatial relationship of mining method based on SWRL; Analysis of servicerelationship in dynamic service combination application, presented the multi-levelmatching service discovery method based on service relationship and dynamic servicecomposition method based on improved service interface matching, and build adynamic service combination framework based on the service relationship library;Finally, the analysis of geographic information service QoS commonly usedcalculation factor, build scalable service quality evaluation model.5. On the hot spot collaborative of WYSIWIS cooperation demand, introducedthe message queues into collaborative operation, put forward under the collaborationenvironment based on message queue service real time collaborative operatingmethod; Combination of group collaborative feature, put forward to face thecollaboration of five types GIS operation, and according to the complexity ofoperation, studies the operation priority evaluation method; According to the groupmembers of the GIS operation collaboration is synchronization features, studies ofGIS coordination conversion method; According to the operation of the input, outputcharacteristics, puts forward to four-tuples definition in the form of GIS operationmessage model; Finally, research the operation message into the team, output the teamof management method, and exception handing method.6. Based on the thesis research, design and implementation the spatial-type hotspot consultation system, combined with the auxiliary international riversmanagement consultation application case, to verify the feasibility and effectivenessof the methods and models in the thesis.