四川大学本科毕业论文ARMA和GMDH模型在成都市经济预测系统中的应用IARMA和GMDH模型在成都市经济预测系统中的应用专业:电子商务学生:王晓伟指导老师:张丹摘要随着经济体制改革和对外开放的深入发展,市场竞争机制在我国经济发展中起着越来越大的作用。要想在激烈的市场竞争中立于不败之地,相关的政府、单位及个人,都需要对当前的经济运行状况有一个客观的判断,并对市场的变化和经济的发展形势进行有效的预测和估计。基于上述需求作者设计实现了宏观经济预测系统。本系统是一套用于经济动态分析、预测的应用软件系统。系统充分将数理统计、计量经济学、计算机数据库技术、网络编程技术等多学科知识紧密融为一体。该系统以先进技术手段和科学、专业的方法优化整合各类宏观经济信息资源,对宏观经济运行状况进行监测、分析、预测,为计划管理部门的宏观经济分析预测工作提供应用平台和分析工具,为经济信息资源管理提供数据库系统支持,为宏观经济决策提供技术支持。本文主要阐述ARMA和GMDH模型的原理、C#的算法实现,并以此为基础,结合计算机数据库技术、网络技术,搭建较为完整的预测系统。同时提供良好的用户界面,将枯燥乏味的数字图形化,直观清晰地实现对经济运行状况的监测、分析、预测。本文由六章内容构成。第一章主要介绍了系统开发的社会背景和技术背景,宏观经济预测工作的国内外现状,系统开发的意义、目标和主要任务等情况。第二章是本文的重点篇章,对宏观经济预测的方法的学习与实践,分别介绍了ARMA和GMDH的算法原理以及调用方法,并对两个模型进行了必要的实证分析。第三章概括介绍了.NET框架相关概念和技术结构并分析了其优势。第四章,详细介绍了作者的设计开发过程和实现情况。第五章是对系统开发中遇到的技术难题的讨论,重点阐述了作者解决问题的过程和由此得到的一系列创新。第六章是对全文的总结,指出了作者在项目开发中完成的工作,同时也说明了系统的不足之处及今后改进的方向。关键词:经济预测ARMAGMDHASP.NETC#四川大学本科毕业论文ARMA和GMDH模型在成都市经济预测系统中的应用IIARMAANDGMDHModelusinginChengduEconomicforecastsystemMajor:E-businessStudent:WangXiaoweiSupervisor:ZhangDanAbstractDevelopingwiththeeconomicreformandtheopeningtotheoutsideworld,themarketcompetitionmechanismisplayingthemoreandmoremajorroleinourcountryeconomydevelopment.Hopingtobeinanimpregnablepositionintheintensemarketcompetition,thecorrelationgovernment,theunitandindividual,allneedtohaveanobjectivejudgmenttothecurrenteconomicalmovementcondition,andcarriesontheeffectiveforecastandtheestimatetothemarketchangeandtheeconomicaldevelopmentsituation.Theauthordesignandrealizethemacroscopiceconomicalforecastsystemaccordingtothecurrentneeds.Thissystemisanapplicationsystemwhichisappliedintheeconomicaldynamicanalysisandtheeconomicalforecast.Thesystemcloselymergesthemathematicalstatistic,theeconometrics,thecomputerdatabasetechnology,thenetworktechnologyintooneorganicwhole.Thissystemoptimizesallkindsofmacroscopiceconomicinformationresourcesbytheadvancedtechnologyandthescienceandspecializedmethod,carriesonthemonitor,theanalysis,forecastwork,providesthedatabasesystemsupportfortheeconomicinformationresourcemanagement,providesthetechnicalsupportforthemacroscopiceconomicaldecision-making.ThispaperwilldiscussthetheoryofARMAandGMDHModelandhowtoactualizethemodelsincodeofC#.Basingthetheoryandthecode,arelativelyfullsystemwillbesetupwiththehelpofdatabaseandwebtechnology.Atthesametimethesystemwillprovideamorefriendlyview,convertingthedullnumberstoimages.Thenpeoplecanclearlyseetheoperationoftheeconomyanddosomefurtherresearchesandforecasts.Thispaperconstitutesbysixchaptersofcontents.Firstchaptermainlyintroducedthesocialbackgroundandthetechnicalbackgroundoftheprojectdevelopment,domestic四川大学本科毕业论文ARMA和GMDH模型在成都市经济预测系统中的应用IIIandforeignpresentsituationsofmacroscopiceconomicalforecastaswellasthesignificance,thegoaloftheprojectdevelopment.Thesecondchapterisakeychapterofthearticle,includedthestudyandapplicationofthemethodsofthemacroscopiceconomicalforecast,itdiscussedtheprincipleofthemodelandthewaytousetheC#code,also,itprovidedsomeanalysisofdemonstration.Thethirdchapterbriefintroduced.NETframework,includingitsconcept,itstechnologystructureanditssuperiority.Fourthchapterintroducedauthor’sdesignandtherealizationsituation.Fifthchapterdiscussthetechnicaldifficultproblemswhichmeettotheprojectdevelopment.Sixthchapterisapapersummary,havepointedoutauthor’sworkwhichcompletesintheprojectdevelopment;alsoexplaindeficiencyaswellasthenextimprovementdirection.Keyword:EconomyforecastARMAGMDHASP.NETC#四川大学本科毕业论文ARMA和GMDH模型在成都市经济预测系统中的应用1目录1绪论..............................................................31.1课题的背景和意义.............................................31.1.1课题的来源.............................................31.1.2进行经济预测的社会背景.................................31.1.3开发本系统的技术背景...................................31.1.4经济预测的研究现状.....................................41.1.5项目研发意义...........................................51.2课题的目标...................................................52ARMA和GMDH模型的原理和算法实现..................................52.1ARMA模型原理................................................52.1.1平稳时间序列模型结构...................................52.1.2ARMA模型参数估计......................................62.1.3ARMA模型的定阶与检验..................................82.2ARMA算法实现................................................92.2.1算法流程...............................................92.2.2算法说明...............................................92.2.3算法实证分析..........................................122.3GMDH模型原理...............................................142.4GMDH算法实现...............................................152.4.1算法流程..............................................152.4.2算法说明..............................................162.4.3算法实证分析..........................................193.NET概述........................................................213.1.NET概述...................................................213.1.1.NET战略.............................................213.1.2.NET框架内核.........................................223.1.3.NET的优势...........................................243.1.4ASP.NET概况..........................................