Photometric redshift estimation for quasars by integration of KNN and SVM

• 作 者: Bo Han Hong-Peng Ding Yan-Xia
• 机 构: InternationalSchoolofSoftware,KeyLaboratoryofOpticalAstronomy
• 出 处: 天文和天体物理学研究：英文版
• 发表日期: 2016年5期
• 关键词: KNN算法 估计方法 集成方法 类星体 SVM 红移 光度 高维特征空间 catalogs -- galaxies： distances and redshif
• 基金项目: supported by the National Natural Science Foundation of China (Grant Nos. 61272272 and U1531122),the Natural Science Foundation of Hubei province (Grant2015CFA058),the National Key Basic Research Prog

The massive photometric data collected from multiple large-scale sky surveys offer significant opportunities for measuring distances of celestial objects by photometric redshifts. However, catastrophic failure is an unsolved problem with a long history an