集成阻抗函數(shù)標(biāo)定的OD估計(jì)雙層規(guī)劃模型研究.pdf

1、111111111111t11111111111111111111111111111111111Y1527739分類號(hào)：U49：F510710一20040287諼害犬海碩士學(xué)位論文集成阻抗函數(shù)標(biāo)定的OD估計(jì)雙層規(guī)劃模型研究導(dǎo)師姓名職稱申請學(xué)位級別楊濤王元慶教授碩士學(xué)科專業(yè)名稱交通運(yùn)輸規(guī)劃與管理論文提交日期2007年5月論文答辯日期2007年6月9日學(xué)位授予單位長安大學(xué)答辯委員會(huì)主席學(xué)位論文評閱人嚴(yán)寶杰教授張生瑞教授孫小端教授Abstra

2、ctThemodelswhichusedtoestimateODmatrixbasedontrafficcountsarepaidmoreattentionThetraditionalmethoddividesthiscourseintotwosteps：firsttoestimatetheODmatrixundertheconditionsofdeterminatedroadnetworkparametersandassignment

3、modelparameters；thenmodifyroadnetworkparametersandassignmentmodelparametersundertheconditionsofdeterminatedODmatrixHowevertheprobleminthismethodisthattheparameterswhichgotfromstep2arenotconsistent、析tlltheparametersgotfro

4、msteplRepeatiterationisnecessarytogetsteadyandconvergentresultHoweverthesteadyandconvergentparameterisusuallyCallnotbegotandsometimesnotconsistent，whichwillinfluencethefittingprecisionTheinfluencefactorsofODestimationpre

5、cisionareanalyzedinthispaperOnthebasisofODestimationtheorycurrentODestimationmethodsandBi—levelprogrammingmodel，theBilevelprogrammingmodelusedtoestimateODwhichintegrates01)estimationandBPRfunctionisputforwardinthispaperT

6、heimprovedmethodis：uplevelsubjectfunctionisaleastsquaresmodelwhichmakesthequadraticsumerrorofestimationmatrix，countvolumeandimpedanceminimumandlowlevelsubjectfunctionisastochasticuserequilibriumassignmentProbitmodel、杌thc

7、onstraintconditionsinwhichuserroutechoicebehavioriswellconsideredThenthesolutionprocedureisputforwardwhichbasedongeneticalgorithm，andprogrammedwithMatlabFinallythemodelandalgorithmaleappliedintheexamplenetwork，therationa

8、lityandvalidityofthemodelandalgorithmalealsoverified，whichindicatethatthemethodthispaperputsforwardCallimprovetheprecisionoffittingthantraditionalmethodKeywords：ODestimation；traveltimefunction；parametercalibration；bi—lev