基于BP神經(jīng)網(wǎng)絡(luò)模型的臨汾市縣域經(jīng)濟(jì)發(fā)展水平差異的測(cè)定與分析
本文關(guān)鍵詞:基于BP神經(jīng)網(wǎng)絡(luò)模型的臨汾市縣域經(jīng)濟(jì)發(fā)展水平差異的測(cè)定與分析 出處:《山西師范大學(xué)》2013年碩士論文 論文類型:學(xué)位論文
更多相關(guān)文章: 縣域經(jīng)濟(jì) BP神經(jīng)網(wǎng)絡(luò) 臨汾市
【摘要】:區(qū)域經(jīng)濟(jì)是研究不同區(qū)域經(jīng)濟(jì)的發(fā)展變化、空間組織及其相互關(guān)系的綜合性應(yīng)用系統(tǒng)。一個(gè)區(qū)域經(jīng)濟(jì)的發(fā)展過(guò)程以及內(nèi)部的特征變化受很多因素的影響,如收入因素、消費(fèi)因素、投資因素、城鎮(zhèn)化等因素的影響和制約。一方面,由于各個(gè)影響因素對(duì)整個(gè)系統(tǒng)的干擾程度不同,因此每個(gè)區(qū)域經(jīng)濟(jì)系統(tǒng)呈現(xiàn)的是動(dòng)態(tài)的、復(fù)雜的非線性系統(tǒng);同時(shí)由于各個(gè)影響因素自身的不確定性,加上外接因素的干擾,使得區(qū)域經(jīng)濟(jì)系統(tǒng)在原本的趨勢(shì)狀態(tài)下會(huì)呈現(xiàn)一定的波動(dòng),這給區(qū)域經(jīng)濟(jì)的預(yù)測(cè)帶來(lái)了很大的困難。另一方面,關(guān)于縣域經(jīng)濟(jì)發(fā)展水平的評(píng)價(jià)國(guó)內(nèi)很多學(xué)者相繼進(jìn)行了大量的研究,大部分的探索都是基于不同的統(tǒng)計(jì)方法以及模型構(gòu)建來(lái)進(jìn)行評(píng)價(jià),而從已有應(yīng)用來(lái)看,這些方法或模型大都為線性的方法和模型,均存在著各自不同的特性和應(yīng)用局限,很難把握對(duì)區(qū)域經(jīng)濟(jì)這種復(fù)雜的非線性系統(tǒng)所進(jìn)行的合理評(píng)價(jià)。其中選取哪些影響因素、建立什么樣的評(píng)價(jià)模型以及如何來(lái)評(píng)述評(píng)價(jià)結(jié)果是本文研究的重要內(nèi)容。 根據(jù)區(qū)域經(jīng)濟(jì)學(xué)的相關(guān)理論,選取了8個(gè)與臨汾市縣域經(jīng)濟(jì)發(fā)展水平關(guān)系密切的指標(biāo),在BP神經(jīng)網(wǎng)絡(luò)工具箱的支撐下,,構(gòu)建臨汾市縣域經(jīng)濟(jì)發(fā)展水平的BP神經(jīng)網(wǎng)絡(luò)評(píng)價(jià)模型,將2011年臨汾市17個(gè)縣域經(jīng)濟(jì)發(fā)展水平分為4個(gè)等級(jí)。并通過(guò)對(duì)頻數(shù)分布特征及變異系數(shù)、加權(quán)變異系數(shù)、威廉森系數(shù)和最大與最小系數(shù)的分析,表明臨汾市縣域經(jīng)濟(jì)發(fā)展水平空間分異顯著,且呈現(xiàn)出三個(gè)基本特征:①“一軸”為驅(qū)動(dòng),帶動(dòng)“兩帶”協(xié)調(diào)發(fā)展;②呈正偏態(tài)分布,第三、第四級(jí)別的縣市比例之和略大于第一、二級(jí)別;③區(qū)域內(nèi)部差異呈主軸向“兩帶”逐漸遞增趨勢(shì);同時(shí)對(duì)所呈現(xiàn)的特征進(jìn)行原因的分析和對(duì)策的系統(tǒng)闡述,這對(duì)將來(lái)某一區(qū)域的經(jīng)濟(jì)評(píng)價(jià)提供一定的參考價(jià)值。
[Abstract]:Regional economy is a comprehensive application system to study the development and change of different regional economy, spatial organization and its interrelation. The development process and internal characteristic change of a regional economy are influenced by many factors. Such as income factors, consumption factors, investment factors, urbanization and other factors. Therefore, each regional economic system presents a dynamic and complex nonlinear system. At the same time, due to the uncertainty of each influencing factor itself and the interference of external factors, the regional economic system will show certain fluctuations in the original trend state. On the other hand, many domestic scholars have done a lot of research on the evaluation of the development level of county economy. Most of the exploration is based on different statistical methods and model construction to evaluate, and from the existing applications, these methods or models are mostly linear methods and models. Because of their different characteristics and application limitations, it is difficult to grasp the reasonable evaluation of the complex nonlinear system of regional economy. What kind of evaluation model and how to comment on the evaluation results are the important contents of this paper. According to the relevant theory of regional economics, 8 indexes closely related to the level of Linfen county economic development are selected, supported by BP neural network toolbox. A BP neural network evaluation model of Linfen county economic development level was constructed. In 2011, 17 counties economic development level in Linfen city was divided into 4 grades. The frequency distribution characteristics and variation coefficient were analyzed. The analysis of weighted variation coefficient, Williamson coefficient and maximum and minimum coefficient shows that Linfen county economic development level spatial differentiation is significant, and presents three basic characteristics: 1 "one axis" drive. Promoting the coordinated development of "two belts"; 2positive skewness distribution, third, the sum of county and city proportion of grade 4th is slightly larger than that of the first and second grade; (3) the difference within the region is gradually increasing to "two zones"; At the same time, the reasons and countermeasures are analyzed systematically, which provides a certain reference value for the economic evaluation of a certain region in the future.
【學(xué)位授予單位】:山西師范大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2013
【分類號(hào)】:F127;TP183
【參考文獻(xiàn)】
中國(guó)期刊全文數(shù)據(jù)庫(kù) 前10條
1 張淑花;周利軍;;基于人工神經(jīng)網(wǎng)絡(luò)的黑龍江省縣域經(jīng)濟(jì)發(fā)展水平評(píng)價(jià)[J];環(huán)境科學(xué)與管理;2008年03期
2 劉麗麗;任冬冬;;綜改試驗(yàn)區(qū)背景下的臨汾市城鎮(zhèn)化發(fā)展戰(zhàn)略[J];城市問(wèn)題;2012年03期
3 朱大奇,于盛林;電子電路故障診斷的神經(jīng)網(wǎng)絡(luò)數(shù)據(jù)融合算法[J];東南大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年06期
4 李雙成,鄭度;人工神經(jīng)網(wǎng)絡(luò)模型在地學(xué)研究中的應(yīng)用進(jìn)展[J];地球科學(xué)進(jìn)展;2003年01期
5 高波;臨汾市水資源開發(fā)利用中存在的問(wèn)題及對(duì)策[J];地下水;2004年03期
6 張敏,周旭東,劉相華,王國(guó)棟;基于人工神經(jīng)網(wǎng)絡(luò)的熱軋帶鋼熱流密度預(yù)測(cè)[J];鋼鐵研究學(xué)報(bào);2004年03期
7 艾立群;人工神經(jīng)網(wǎng)絡(luò)在鋼鐵工業(yè)中的應(yīng)用[J];鋼鐵研究學(xué)報(bào);1997年04期
8 許月卿,賈秀麗;近20年來(lái)中國(guó)區(qū)域經(jīng)濟(jì)發(fā)展差異的測(cè)定與評(píng)價(jià)[J];經(jīng)濟(jì)地理;2005年05期
9 蘇義坤,張守健,孫三龍;工程建設(shè)安全管理效果評(píng)價(jià)[J];佳木斯大學(xué)學(xué)報(bào)(自然科學(xué)版);2003年04期
10 王蓉;臨汾市山區(qū)國(guó)土資源綜合開發(fā)對(duì)策初探[J];科技情報(bào)開發(fā)與經(jīng)濟(jì);2005年12期
中國(guó)博士學(xué)位論文全文數(shù)據(jù)庫(kù) 前2條
1 邢志廣;中國(guó)縣域經(jīng)濟(jì)發(fā)展模式研究[D];哈爾濱工程大學(xué);2006年
2 盧建明;山西省縣域經(jīng)濟(jì)發(fā)展研究[D];華中科技大學(xué);2008年
中國(guó)碩士學(xué)位論文全文數(shù)據(jù)庫(kù) 前4條
1 劉艷菊;氣候變化對(duì)山西省水資源的影響分析[D];河海大學(xué);2007年
2 張鳳林;山西省縣域經(jīng)濟(jì)發(fā)展模式研究[D];中北大學(xué);2009年
3 鄒子建;基于BP神經(jīng)網(wǎng)絡(luò)的衡水市經(jīng)濟(jì)預(yù)測(cè)研究[D];西北農(nóng)林科技大學(xué);2010年
4 游望星;基于DSP的電路故障診斷系統(tǒng)研究與開發(fā)[D];湖南大學(xué);2010年
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