天體光譜數(shù)據(jù)挖掘與分析

第1 章 緒論······················································································ 1
1.1 天體光譜·············································································· 1
1.1.1 LAMOST 光譜巡天·························································· 2
1.1.2 SDSS 光譜巡天································································ 5
1.1.3 光譜分析········································································ 6
1.2 數(shù)據(jù)挖掘·············································································· 7
1.2.1 產(chǎn)生和定義····································································· 7
1.2.2 數(shù)據(jù)挖掘任務(wù)與分類······················································ 10
1.2.3 主要應(yīng)用······································································ 12
1.3 海量天體光譜數(shù)據(jù)挖掘······················································ 14
1.3.1 分類············································································ 14
1.3.2 聚類及離群分析···························································· 17
1.3.3 關(guān)聯(lián)規(guī)則······································································ 19
1.3.4 恒星大氣參數(shù)測量························································· 20
1第2 章 基于模糊識別的雙紅移系統(tǒng)星系光譜搜尋與分析·············· 24
2.1 引言···················································································· 25
2.2 基于模糊識別的搜尋方法·················································· 27
2.2.1 樣本選擇······································································ 27
2.2.2 方法描述······································································ 28
2.3 結(jié)果分析············································································ 35
2.3.1 SDSS DR9 和LAMOST DR1 中SGPs 樣本························· 35
2.3.2 光譜與圖像分析···························································· 39
2.3.3 塵埃消光測量································································ 48
2.4 討論···················································································· 51
第3 章 稀有光譜檢索的PU 學(xué)習(xí)方法············································ 53
3.1 問題提出············································································ 54
3.2 二部排序模型····································································· 56
3.2.1 TopPush 方法································································ 57
3.2.2 面向稀有光譜檢索的BaggingTopPush 方法························ 58
3.3 實驗設(shè)計············································································ 59
3.3.1 樣本選擇······································································ 60
3.3.2 實驗設(shè)置······································································ 61
3.3.3 評價指標(biāo)······································································ 64
3.4 結(jié)果分析············································································ 65
3.4.1 排序效果······································································ 65
3.4.2 排序效率······································································ 72
3.4.3 參數(shù)敏感性··································································· 74
3.5 討論···················································································· 76
第4 章 E+A 星系搜尋與分析·························································· 78
4.1 問題提出············································································ 78
4.2 E+A 星系光譜搜尋方法······················································ 80
4.2.1 樣本選擇—LAMOST 數(shù)據(jù)集········································· 80
4.2.2 搜尋方法······································································ 80
4.2.3 近鄰E+A 星系星表························································ 83
4.3 結(jié)果分析············································································ 87
4.3.1 樣本分布特征································································ 87
4.3.2 星族合成分析································································ 90
4.3.3 圖像分析······································································ 92
4.4 討論···················································································· 95
第5 章 基于貝葉斯支持向量機(jī)的光譜分類方法····························· 98
5.1 問題提出············································································ 98
5.2 基于貝葉斯支持向量機(jī)的分類方法·································· 100
5.2.1 支持向量機(jī)······