黑龍江省西部坡耕地土壤侵蝕規(guī)律試驗研究.pdf

1、ClassifiedIndex:U.D.C:D155ertationfortheMasterDegreeinEngineeringtheexPerimentalstudyof5011erosionlawinWesternSloPeofHeilongjiangCandidate:LinaSuPervisor:Prof.WeiYongxiaAcademicDegreeAPPliedfor:MasterofEngineeringSPecial

2、ity:5011andwaterEngineeringinDateofOralExamination:AgrieultureUniversity:June，2009NortheastAgrieulturalUniversity東北農業(yè)大學工程碩士學位論文4.7模型驗證......................................................................................

3、.....……，..................……335.BP人工神經(jīng)網(wǎng)絡及支持向量機評價預測模型研究.........................................................……355.1BP人工神經(jīng)網(wǎng)絡模型研究，.....................................................................................……35

4、5.1.1BP神經(jīng)網(wǎng)絡模型介紹..............................................……355.1.2BP神經(jīng)網(wǎng)絡預測模型的構建........................................................................……355.1.3BP神經(jīng)網(wǎng)絡預測模型建模型步驟....................................……，..

5、...................……365.2基于支持向量機的土壤侵蝕評價預測模型研究...................................................……375.2.1支持向量機(SVM)基本原理....................................................……、.........……385.2.2svM回歸算法及其實現(xiàn)................

6、.........................……395.2.3參數(shù)的確定.......……，..........................................……，......................................……426結論與展望.................……‘....……，...................................................

7、..............……，................……446.1結論............................................................................................................................……446.2展望.............................................

8、...............................................................................……45致謝.....................................................................................................……，........................……46參考文

9、獻..................................................................................................................................……47攻讀碩士學位期間發(fā)表的學術論文......................................................................