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arXiv 1302.5129astro-ph.IM
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机器辅助发现天文学中的关系

Machine-assisted discovery of relationships in astronomy

Matthew J. Graham, S. G. Djorgovski, Ashish A. Mahabal, Ciro Donalek, Andrew J. Drake

摘要:

大容量、特征丰富的数据集正在成为21世纪天文学的基础,但对科学发现提出了重大挑战。特别是,确定参数集之间的科学上重要的关系是不平凡的。生物学和地球科学中的类似问题已经导致了可以探索大参数空间并识别潜在的感兴趣的关联集合的系统的发展。在本文中,我们描述了自动发现系统的关系,天文数据集的应用,侧重于进化规划技术和信息理论技术。我们展示了他们的使用与经典的天文关系-赫兹-罗素图和椭圆星系的基本平面。我们还展示了他们如何与二元分类的问题,这是相关的下一代大型天气天空调查,如LSST。我们发现,比较熟悉的技术,如决策树,是可以实现的结果。最后,我们考虑的现实中发现的关系,以及如何将其用于特征选择和提取。

英文摘要:

High-volume feature-rich data sets are becoming the bread-and-butter of 21st century astronomy but present significant challenges to scientific discovery. In particular, identifying scientifically significant relationships between sets of parameters is non-trivial. Similar problems in biological and geosciences have led to the development of systems which can explore large parameter spaces and identify potentially interesting sets of associations. In this paper, we describe the application of automated discovery systems of relationships to astronomical data sets, focussing on an evolutionary programming technique and an information-theory technique. We demonstrate their use with classical astronomical relationships - the Hertzsprung-Russell diagram and the fundamental plane of elliptical galaxies. We also show how they work with the issue of binary classification which is relevant to the next generation of large synoptic sky surveys, such as LSST. We find that comparable results to more familiar techniques, such as decision trees, are achievable. Finally, we consider the reality of the relationships discovered and how this can be used for feature selection and extraction.

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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