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arXiv cs/0307032cs.DBastro-phphysics.data-an
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天体物理数据库中的数据管理与数据挖掘

Data Management and Mining in Astrophysical Databases

M. Frailis, A. De Angelis, V. Roberto

摘要:

我们分析了天体物理数据的管理和挖掘所涉及的问题。天体物理学领域的传统数据管理方法无法跟上现代探测器收集的数据量的增长。从大型数据集中自动提取信息抽取的工具,即数据采掘技术,如聚类和分类算法,将在天体物理学研究中发挥重要作用。这就需要一种基于数据仓库的数据管理方法,强调数据访问的效率和简单性;使用多维访问方法获得效率,通过正确处理元数据实现简单性。在大型数据集上的聚类和分类技术提出了额外的要求:在数据大小、聚类或分类结果的可解释性和客观性方面的计算和内存可扩展性。在这项研究中,我们提出了一些可能的解决方案。

英文摘要:

We analyse the issues involved in the management and mining of astrophysical data. The traditional approach to data management in the astrophysical field is not able to keep up with the increasing size of the data gathered by modern detectors. An essential role in the astrophysical research will be assumed by automatic tools for information extraction from large datasets, i.e. data mining techniques, such as clustering and classification algorithms. This asks for an approach to data management based on data warehousing, emphasizing the efficiency and simplicity of data access; efficiency is obtained using multidimensional access methods and simplicity is achieved by properly handling metadata. Clustering and classification techniques, on large datasets, pose additional requirements: computational and memory scalability with respect to the data size, interpretability and objectivity of clustering or classification results. In this study we address some possible solutions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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