347 citations · 781 across the 21 of their papers we have counts for
5 papers · 1 filter
Morphology Classification and Photometric Redshift Measurement of Galaxies
Yanxia Zhang, Lili Li, Yongheng Zhao
Based on the Sloan Digital Sky Survey Data Release 5 Galaxy Sample, we explore photometric morphology classification and redshift estimation of galaxies using photometric data and…
Support Vector Machines and Kd-tree for Separating Quasars from Large Survey Databases
Gao Dan, Zhang Yanxia, Zhao Yongheng
We compare the performance of two automated classification algorithms: k-dimensional tree (kd-tree) and support vector machines (SVMs), to separate quasars from stars in the databa…
Comparison of decision tree methods for finding active objects
Y. Zhao, Y. Zhang
The automated classification of objects from large catalogues or survey projects is an important task in many astronomical surveys. Faced with various classification algorithms, as…
Multi-parameter estimating photometric redshifts with artificial neural networks
Lili Li, Yanxia Zhang, Yongheng Zhao +1
We calculate photometric redshifts from the Sloan Digital Sky Survey Data Release 2 Galaxy Sample using artificial neural networks (ANNs). Different input patterns based on various…
Automated Clustering Algorithms for Classification of Astronomical Objects
Yanxia Zhang, Yongheng Zhao
Data mining is an important and challenging problem for the efficient analysis of large astronomical databases and will become even more important with the development of the Globa…