arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.03591astro-ph.IMastro-ph.GAcs.AIcs.LG
收藏

改进星系合并跨域研究的域适应技术

Domain adaptation techniques for improved cross-domain study of galaxy mergers

Fermi National Accelerator Laboratory(费米国家加速器实验室);University of Chicago(芝加哥大学);Argonne National Laboratory(阿贡国家实验室);Oak Ridge National Laboratory(橡树岭国家实验室);Kavli Institute for Cosmological Physics(卡弗里宇宙学物理研究所)

A. Ćiprijanović, D. Kafkes, S. Jenkins, K. Downey, G. N. Perdue, S. Madireddy, T. Johnston, B. Nord

摘要:

在天文学中,神经网络通常在模拟数据上进行训练,并有望应用于实际观测。不幸的是,简单地在来自一个域的图像上训练深度神经网络并不能保证在来自不同域的新图像上具有令人满意的性能。共享跨领域知识的能力是现代深度领域自适应技术的主要优势。在这里,我们演示了使用两种技术-最大平均离散(MMD)和对抗训练域对抗神经网络(DANN)-从Illustris-1模拟遥远的星系合并的分类,其中两个域呈现不同,只是由于包括观测噪声。我们展示了与传统的机器学习算法相比,MMD或对抗训练的加入如何大大提高了分类器在目标域上的性能,从而展示了它们在天文学中的应用前景。

英文摘要:

In astronomy, neural networks are often trained on simulated data with the prospect of being applied to real observations. Unfortunately, simply training a deep neural network on images from one domain does not guarantee satisfactory performance on new images from a different domain. The ability to share cross-domain knowledge is the main advantage of modern deep domain adaptation techniques. Here we demonstrate the use of two techniques - Maximum Mean Discrepancy (MMD) and adversarial training with Domain Adversarial Neural Networks (DANN) - for the classification of distant galaxy mergers from the Illustris-1 simulation, where the two domains presented differ only due to inclusion of observational noise. We show how the addition of either MMD or adversarial training greatly improves the performance of the classifier on the target domain when compared to conventional machine learning algorithms, thereby demonstrating great promise for their use in astronomy.

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。

↑