基于遺傳算法改進的bp神經(jīng)網(wǎng)絡的城市人居環(huán)境質(zhì)量評價研究

1、遼寧師范大學碩士學位論文基于遺傳算法改進的BP神經(jīng)網(wǎng)絡的城市人居環(huán)境質(zhì)量評價研究姓名：李明申請學位級別：碩士專業(yè)：自然地理指導教師：李雪銘20070601基于遺傳算法改進的BP神經(jīng)網(wǎng)絡的城市人居環(huán)境質(zhì)量評價研究Abstractcontent：By1997thedegreeofurbanizationinourcountryhadreachedto30percentAccordingtothetheoryonthedevelopmento

2、fcities，ChinahassteppedintoanewperiodofrapidurbanizationThisisaperiodinwhichtheurbanizationinourcountryhasexperiencedallurban—centredtosuburbancentredtransitionHowevertheproblemsintheprocessofurbanizationwearefacingnowad

3、aysarefarmorecomplicatedthantIloseofthedevelopedwestemcountriesandmostofthedevelopingcountriesComparingwithothercountries。theurbanizationinChinahasitsparticularities：rapidurbanization，highbirthrate，laggardindustrializati

4、on，andpovertyincitiesFurthermore，urbanizationinsuchahJighspeedhascausedtheexacerbationoftheecosystem，theoverloadoftheeityinfrastructures，andthedecreasingofurbanhumansettlementsU曲anhumansealementisacriticalcriterioniniudg

5、ingthelevelofdevelopmentofacityItissafetosaythatitisthereflectionofurbaneconomiccirculationandenvironmentalconstructioninthesenseofgeographicalspaceunderurbanizationTherefore，itisimportantsubjecttoevaluatethedegreeofurba

6、nhumansettlementduringtheprocessofrapidurbanizationtoanalysetheproblemsithasinvariouscitiestomakeaclassificationintheangleofselffulfillment，andtoexploreitsregionalsimilaritiesitscharaetefistiesandreasonsthatcausedthedist

7、inctionnlesnbjeetalsohasitssignificanceinprojectingtheurbandevelopment，theselectionofflowinglabors，chOOSingresidencesandrelocationWiththepurposeofposingthestatusqunofurbanhumansettlementsanditstempoindifierentcities，GAre

8、formedBPneuralnetworktoevaluateitsintegritybysettingupasystemofmailbasedqualityevaluationofmainurbansettlementsinChinaThroughthissystemitisalsopossibletomakeaclassifiediudgementonurbanhumansettlementsin35ofourmaincitiesf

9、romdi丘brentanglesaseconomicrealization，digitalrealization，acquisitiverealizationresidentialrealization。transportingrealization，secufityrealization，virescencerealization，recreationalrealization，naturalenvironmentalrealiza

10、tiontodistinguishthedifierencesindifierentcitiessoastprovidebasisforconstructionandmanagementofurbanhumansettlementsindifferentcitiesBasedontheresearchworktheurbanhumansettlementsinChinaisprovidedwiththeparticularityofob

11、viousregionaldistinctions：itsqualityinlittoralcitiesismostlyhigherthanthatofthemiddleandwesternregionsItshowsthegeographicalelementscountfundamentallyinurbanhumansettlements，madeconomiceapacityishighlyconnectedwithitnlct

12、opsevencitiesintheevaluationofurbanhumansettlementsallcomefromthedevelopedeasternlittoralfortheprosperityofthecitiesprovidesbettercareeropportunitiesandsurroundingsMeanwhile，thefundsallocatedtotheconstructionoftheinfrast

13、ructureandthemeliorationofenvironmentalconditionsneedthesupportofprospelollseconomyFromtheviewofclassifiedevaluation，theselffulfillmentofpeoplerequircsmoreoneconomicrealizationdigitalrealization，residentialrealizationtra

14、nsportingrealizationsecudtyrealization，virescencerealization，recreationalrealizationInotherwords，inurbanhumansettlements，theeconomicenvironment，salarycirculationofinformation，degreeofmodernizationvirescencoconditionandth