Framework for Approximate Queries on Simulation Data.

Abdulla, G. ; Baldwin, C. ; Crichlow, T. ; Kamimura, R. ; Lee, B. ; Musick, R. ; Snapp, R. ; Tang, N. A.

Technical Information Center Oak Ridge Tennessee

关键词: Data analysis;    Data processing;    Accuracy;    Simulation;    Representations;   

RP-ID  :  DE200415006312

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

AQSim is a system intended to enable scientists to query and analyze a large volume of scientific simulation data. The system uses the state of the art in approximate query processing techniques to build a novel framework for progressive data analysis. These techniques are used to define a multi-resolution index, where each node contains multiple models of the data. The benefits of these models are two-fold: (1) they are compact representations, reconstructing only the information relevant to the analysis, and (2) the variety of models capture different aspects of the data which may be of interest to the user but are not readily apparent in their raw form. To be able to deal with the data interactively, AQSim allows the scientist to make an informed tradeoff between query response accuracy and time.