Research On Visualization Model Description And Management Based On Big Data

In recent years,the study of big data is becoming increasingly hot with the governments have introduced opening data source and supported research on big data strategy,the whole society on the demand for big data innovation applications is growing.However,in the big data innovation application requirements surge at the same time,how the industry domain knowledge and data combination,the rapid formation of business capabilities to serve the market,as a problem to be solved.In this thesis,a definition and description method of big data visualization model was proposed for the situation that the data is volume,the big data modeling is complex and the model is difficult to share.By defining the concept and structure of the metadata of the big data model,the hierarchical structure and attribute charactteristics of the big data model metadata are discribed in detail.The big data visualization model is defined and discribed by basis metadata,platform metadata and visual metadata in XML format metadata.These metadata form the basis for big data model generation,storage,application and management.Then,in order to make the big data model more efficient and reasonable to use,this thesis constructs a hybrid index structure HB tree,which can be used for parallel retrival of big data systems,based on the definition of index's metadata,combined with model feature and non ralational database index structure.On the basis of the HB tree,the index structure was updated and a retrival algorithm was established which retrival results was not null.Then improved the retrival algothim based on the mark of the HB tree.Finally,through the theoretical analysis and experimental vertification that update and retrieval efficiency are greatly improved.Finally,based on the description of the big data visualization model metadata,design and implement a big data model for functional visualization modeling through the Java SWT module division.On this basis,combined with the model design mechanism to design and complete a big data model designer which to achieve a big data visualization model design,management and operation process.At last,the model is retrieved and used by the realization of big data retrival.