基于Copula Entropy的测光红移
Photometric Redshifts with Copula Entropy
AI总结：
本文提出利用Copula Entropy（CE）测量测光数据与红移的相关性以筛选特征，在SDSS quasar数据上验证表明该方法提升了测光红移精度且模型具可解释性。
摘要：
本文提出将Copula Entropy（CE）应用于测光红移。CE用于测量测光测量值与红移之间的相关性，随后选择具有高CE的测量值来预测红shift。我们在SDSS quasar数据上验证了该方法。实验结果表明，与使用所有测量值的实验结果相比，使用所选测量值提高了测光红移的精度，特别是对于高红移样本。用CE选择的测量值包括光度、带标准差的紫外波段亮度以及其他四个波段的亮度。由于CE是严格定义的数学概念，由此推导的模型具有可解释性。
英文摘要：
In this paper we propose to apply copula entropy (CE) to photometric redshifts. CE is used to measure the correlations between photometric measurements and redshifts and then the measurements associated with high CEs are selected for predicting redshifts. We verified the proposed method on the SDSS quasar data. Experimental results show that the accuracy of photometric redshifts is improved with the selected measurements compared to the results with all the measurements used in the experiments, especially for the samples with high redshifts. The measurements selected with CE include luminosity magnitude, the brightness in ultraviolet band with standard deviation, and the brightness of the other four bands. Since CE is a rigorously defined mathematical concept, the models such derived is interpretable.
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。
