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Comparison of decision tree methods for finding active objects
文献类型：期刊论文
| 作者 | Zhao, Yongheng ; Zhang, Yanxia
|
| 刊名 | ADVANCES IN SPACE RESEARCH
 |
| 出版日期 | 2008 |
| 卷号 | 41期号:12页码:1955-1959 |
| 关键词 | techniques : miscellaneous methods : statistical methods : data analysis astronomical data bases : miscellaneous catalogs decision trees |
| 英文摘要 | The automated classification of objects from large catalogs or survey projects is an important task in many astronomical surveys. Faced with various classification algorithms, astronomers should select the method according to their requirements. Here we describe several kinds of decision trees for finding active objects by multi-wavelength data, such as REPTree, Random Tree, Decision Stump, Random Forest, J48, NBTree, AdTree. All decision tree approaches investigated are in the WEKA package. The classification performance of the methods is presented. In the process of classification by decision tree methods, the classification rules are easily obtained, moreover these rules are clear and easy to understand for astronomers. As a result, astronomers are inclined to prefer and apply them, thus know which attributes are important to discriminate celestial objects. The experimental results show that when various decision trees are applied in discriminating active objects (quasars, BL Lac objects and active galaxies) from non-active objects (stars and galaxies), ADTree is the best only in terms of accuracy, Decision Stump is the best only considering speed, J48 is the optimal choice considering both accuracy and speed. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000256719700002 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7472]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | CAS, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Yongheng,Zhang, Yanxia. Comparison of decision tree methods for finding active objects[J]. ADVANCES IN SPACE RESEARCH,2008,41(12):1955-1959. |
| APA | Zhao, Yongheng,&Zhang, Yanxia.(2008).Comparison of decision tree methods for finding active objects.ADVANCES IN SPACE RESEARCH,41(12),1955-1959. |
| MLA | Zhao, Yongheng,et al."Comparison of decision tree methods for finding active objects".ADVANCES IN SPACE RESEARCH 41.12(2008):1955-1959. |
入库方式： OAI收割
来源：国家天文台
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