Research On Computational Experiment Evaluation Method Of Context Aware Service

Along with the development of mobile computing,Internet of things and service computing,context aware service system has been applied in many fields,such as home life,medical service,tourism consulting,mining industry and so on.Based on the existing research,the development process generally includes the following several steps: context information collection,context information reasoning,context service matching,and service recommendation.Since there are a large number of candidate technology options available at each step,a variety of alternative service implementation strategies can be formed.In some special and complex environment(such as coal,transportation),context aware service accuracy,reliability and real-time performance is extremely demanding,incorrect or not timely service not only can not play its due role,and may even cause disastrous consequences.In this context,how to compare the differences of different service strategies in complex environment,and choose the most appropriate strategy,becomes the key problem to be solved urgently in this field.Aiming at the shortcomings of traditional testing methods,this paper presents a method of situational awareness service evaluation based on computational experiments,which mainly consists of three parts:1.This paper put forward by situational data collection,situational information extraction(reasoning),business services selection(matching algorithm)and services recommended(recommendation algorithm)four aspects mutual combination construct the realization strategy of different context aware services.In the construction of situational experiment system,this paper presents the experimental system is divided into three elements,characters,environment,events,and the use of Agent oriented approach to its modeling.At last,in the experiment system,the effect of the service strategy is evaluated by the method of computational experiment.2.Based on the above research results,this paper illustrates the application of this method in the case of intelligent mine context awareness service.Two kinds of context awareness services used in coal mines,the police and escape,to build a different implementation strategies.In this paper,the context awareness system of coal mine is abstracted as three elements of the mine environment,miners and disaster,and the model of the Agent oriented method is used to construct the experimental system of the mine situation awareness service.3.According to the warning service strategy,this paper constructs the active query mode and the passive push mode.Aiming at the escape service strategy,this paper constructs the minimum hidden escape strategy and the shortest path service strategy.In the experimental system,the two kinds of context awareness services are evaluated and tested,which provide decision-making basis for choosing appropriate situational awareness services under different situations.In this paper,the computational experiment evaluation method of the context aware service is proposed,which can provide a reference for the choice of service strategy based on different situations.In this paper,the application of the method is illustrated with the example of mine evacuation services and alarm services.The different implementation strategies of the two services are evaluated and tested.The test results meet the expected goals.