21746.改進(jìn)的bp神經(jīng)網(wǎng)絡(luò)算法在洪災(zāi)損失評(píng)估中的應(yīng)用研究

1、分類號(hào)：密級(jí)：學(xué)號(hào)：2009268單位代碼：10407碩士學(xué)位論文論文題目:改進(jìn)的改進(jìn)的BP神經(jīng)網(wǎng)絡(luò)算法在洪災(zāi)損失評(píng)神經(jīng)網(wǎng)絡(luò)算法在洪災(zāi)損失評(píng)估中的應(yīng)用研究估中的應(yīng)用研究研究方向GIS應(yīng)用應(yīng)用專業(yè)名稱大地測(cè)量學(xué)與測(cè)量工程大地測(cè)量學(xué)與測(cè)量工程研究生姓名胡飛輝胡飛輝導(dǎo)師姓名、職稱劉小生劉小生教授教授2012年3月24日江西贛州IIAbstractFlooddisasterisoneofthewstnaturaldisastersinourco

2、untrywhichoccurswithhighfrequencyresultinstrongimpactsinwidearea.Thecasualtieseconomiclossiscausedbyflooddisasterhasseriousrestrictedthesustainabledevelopmentofsocietyeconomyinourcountry.Thelossassessmentofflooddisasterc

3、anprovideimptantdecisionbasisfthefloodfightingdisasterreliefcanmakeanaccurateevaluationfthebenefitsoffloodhazardmitigationfloodcontrolprojectscanprovidescientificguidancefthefloodreliefactivitiescanprovidereliablebasisft

4、hefloodinsurancereasonablecompensation.Therefethestudyftheeconomiclossassessmentofflooddisasterisverynecessary.Aimattheproblemsexistedinthecurrentfloodlossassessmentmethodswhicharelargeamountsofcomputationcomplicatedoper

5、ationlowaccuracyofassessmentresultssoonthispaperputsfwardthemethodoffloodlossassessmentbasedonBPneuralwkalgithm.Thepaperfirstintroducedrelatedtheyoffloodlossassessmentbasedonthisresearchedthecalculationmethodoffloodlossa

6、ssessmenttheindexsystemoffloodlossassessmenttheinfluencefactsoffloodlossassessmentSecondgettingtheimpactfactdataoffloodlossassessmentbythemathematicalstatisticsmethodGISRSintegratedwiththetheyoffuzzysetsroughsetsthepaper

7、usefuzzyclusteringanalysismethodthenmalizedprocessingmethodtodistributetherightvaluefimpactfactoffloodlossassessmentthenthepaperanalyzedtheadvantagesdisadvantagesofseveralimprovedmethodsfBPneuralwkalgithmbasedonthisthepa

8、perpresentedthecomprehensiveimprovementmethodofBPalgithmverifiedimproveeffectofthemethodbytheexperimentsFinallyusingtheimprovedBPalgithmtobuildthefloodlossassessmentmodelbasedonimprovedBPalgithmthemodelappliedtoassessthe

9、floodeconomiclossofDuchangCountry.Applicationresultsofthestudyareashowthatthefloodlossassessmentmodelcanrapidlyaccuratelyassessedtheeconomiclossvalueofflooddisastersoithasagoodpracticalitycanplayaroleinthefloodfightingdi