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arXiv 2110.12554astro-ph.SRcs.NAmath.NA
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监督耀斑预测研究的实施范例:视频数据的深度学习应用

Implementation paradigm for supervised flare forecasting studies: a deep learning application with video data

Sabrina Guastavino, Francesco Marchetti, Federico Benvenuto, Cristina Campi, Michele Piana

摘要:

利用人工智能技术对地磁数据进行分析,可以实现太阳耀斑的预报。其目的是预测一个磁活动区(AR)是否会在一定的时间内产生一定级别以上的太阳耀斑。一个关键的问题是所采用的机器学习方法的实现方式,因为预测结果在很大程度上取决于训练,验证和测试集填充的标准。在本文中,我们提出了一个一般的范例,以产生这些集的方式,他们是相互独立的,内部以及平衡的AR燃烧的有效性。该集合生成过程为机器学习算法的性能评估提供了比较的基础。最后,我们在深度神经网络的情况下使用这种实现范例,该网络将太阳动力学天文台(SDO/HMI)上的日震和磁成像仪记录的磁图视频作为输入。据我们所知,这是第一次通过用于视频分类的深度神经网络来解决太阳耀斑预测问题,这不需要从HMI磁图中提取任何先验特征。

英文摘要:

Solar flare forecasting can be realized by means of the analysis of magnetic data through artificial intelligence techniques. The aim is to predict whether a magnetic active region (AR) will originate solar flares above a certain class within a certain amount of time. A crucial issue is concerned with the way the adopted machine learning method is implemented, since forecasting results strongly depend on the criterion with which training, validation, and test sets are populated. In this paper we propose a general paradigm to generate these sets in such a way that they are independent from each other and internally well-balanced in terms of AR flaring effectiveness. This set generation process provides a ground for comparison for the performance assessment of machine learning algorithms. Finally, we use this implementation paradigm in the case of a deep neural network, which takes as input videos of magnetograms recorded by the Helioseismic and Magnetic Imager on-board the Solar Dynamics Observatory (SDO/HMI). To our knowledge, this is the first time that the solar flare forecasting problem is addressed by means of a deep neural network for video classification, which does not require any a priori extraction of features from the HMI magnetograms.

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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