Research On Several Key Technologies Of E-governmental Data Visualization

With the popularity of e-government platforms in various government departments,not only the amount of data generated is growing,but also its data types are diverse,including structured data,semi-structured data and unstructured document data.How to analyze the e-government data based on the visualization technology in order to excavate the regular knowledge contained therein and provide the decision-making basis for the relevant government departments is of great significance.Taking this as the background,this paper studies some key technologies of e-government data visualization,and its main research contents include:1.A multi-faceted data visualization model is proposed.A multi-faceted data visualization model is designed for multidimensional features of e-government data.The model includes data model,visualization model,demand model and mapping relationship between them,and research on multi-side data visualization modeling method.The multi-side data visualization algorithm is used to validate the multi-side data visualization model based on e-government data,and the same data set is analyzed from multiple aspects and angles.2.A method of visualization of flow data based on parallel coordinate system is proposed.Based on the analysis of the characteristics of the flow data,a visualization method of the flow data based on the parallel coordinate system is proposed.The visualization model of the flow data is defined and the mapping between the models is realized by the conversion algorithm.In order to solve the bottleneck of the mass flow data visualization performance And the intersection of polylines,the parallel processing algorithm based on Spark framework is realized,and the visual effect of parallel coordinate system is enhanced.3.A document synthesis data processing and visualization method is proposed.Aiming at the structure and characteristics of the document synthesis data,the document Synthesis data visualization framework is designed.The frame of the document is extracted on demand,using the RDD operator operation,and the result is taken as the data source of the document integrated data,in a variety of visualization of the form shown in the form,through the example to verify the effectiveness of the method.Finally,with the title of government data,for example,the development of e-government data visualization system,the system can the title of the basic data,approval data,assessment data,document comprehensive data visual analysis,management provides data visualization analysis tools.