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刍议线性规划在证券投资组合决策中的应用 总被引:1,自引:0,他引:1
如何选择一个满意的投资组合,在既定条件下实现一个最有效率的风险一收益搭配,是证券投资组合的关键问题。本文在分析Markowitz模型及其发展的基础上提出了一种新的证券组合投资选择模型,与Markowitz模型相比更容易实践,通过建立和求解证券投资风险最小化模糊线性规划模型和投资收益最大化模糊线性规划模型,试图优化证券投资组合,从而作出科学的投资决策。文章最后给出应用示例。 相似文献
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本文应用线性规划中对运输问题的解决方法,结合宁夏发行库分布及发行基金调运现状,对不同调拨模式分别建立数学模型,并使用LINGO软件进行求解.探讨在满足发行基金调拨数量的基础上,如何实现调拨距离最短. 相似文献
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DEA方法在四大国有银行经营状况评价中的应用 总被引:3,自引:0,他引:3
本文试图将DEA方法用于银行经营效率的分析研究。本文使用DEA方法测算出投入冗余、影子价格等,从技术分析的层面评价我国四大国有银行的经营效率,也从而为国有银行今后扬长避短,高效率地运行,提出了一条改革建议。 相似文献
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信用卡产业虽然在我国发展时间不久,但已经成为各个银行激烈争夺的市场,对信用卡的信用风险进行有效管理已经成为当务之急。本文在参考各种文献的基础上,简要介绍个人信用评分及其常用的方法,重点介绍了利用线性规划模型解决个人信用评级的理论,并给出利用Matlab软件进行计算分析的详细过程。 相似文献
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王兰林 《河南财政税务高等专科学校学报》2010,24(2)
对于只有两个变量的简单的线性规划问题,可以用图解法求最优解,也就是作出约束条件的可行域,利用图解的方法求出最优解,其特点是过程简洁、图形清晰。 相似文献
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We propose a new method forfailure discrimination and rating of enterprises using financialdata compiled from their balance sheets. No particular distributional assumption is made on the underlying data. Our method automatically discriminates and rates many enterprises using mathematical programming methods. We separate multi-dimensional data byhyperplane and hyper-ellipsoid, so that we can interpretthe results of classification from the geometric point of view. Theproblem to be solved here is a linear programming problem orsemi-definite programming problem which can be solved efficiently byinterior point algorithms. Numerical simulations usingreal data show that hyper-ellipsoid separation generates a result which can be used for practical purposes. 相似文献
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VaR方法在房地产收益波动性度量中的应用 总被引:1,自引:0,他引:1
杨楠 《中央财经大学学报》2006,(4):69-74
本文探讨了VaR方法在房地产收益波动性度量中的应用,并对上海二手房指数时间序列的收益率风险进行了实证研究,结果表明此方法对于指数收益率风险的度量具有较强的适用性。 相似文献
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本文从世界模型的角度,阐述世界均衡的特点,初步建立有关汇率和本国股票市场、外国股票市场的函数形式,从而为研究汇率与股价之间的价格互动机制的奠定理论基石。 相似文献
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论文以淘宝网为对象收集样本,运用多层线性模型研究价格、信息描述、默认排名、卖家信用度和卖家好评率对成交量的影响.结果显示成交量在不同商家间存在显著的差异,价格和信息描述会对成交量产生重要影响而默认排名影响不显著,卖家信用度和卖家好评率会对成交量产生显著的影响. 相似文献
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Shiller (1993) proposes the hedonic repeated-measures (HRM) approach to measuring constant quality price indices for heterogeneous assets such as some bonds and real estate. We derive a mathematical relationship between the coefficients of the HRM model and those from the standard repeat-sales model, and we demonstrate how hedonic characteristics should be chosen for inclusion in the HRM model. Empirical estimates using Fairfax, Virginia, housing transactions data show that the HRM price index evaluated at the mean of the hedonic variable is virtually identical to the standard repeat sales index, just as predicted by our mathematical relationship. But the HRM allows estimation of different price paths for heterogeneous assets. We demonstrate that use of assessed value as the only hedonic characteristic allows parsimonious HRM estimates. 相似文献
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金融危机过后,在世界经济的复苏进程中,国际黄金价格出现大幅度上涨,其主要原因是美元贬值的压力、通货膨胀的威胁、复苏进程的不确定性、国际黄金市场供求关系的变化。黄金价格短期内上行趋势不会改变,但长期看不可持续。 相似文献
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This article integrates the SVAR model and nonlinear ARDL (NARDL) model to analyze the long-run and short-run asymmetric effect of structural oil price shocks on the Chinese stock market. We reveal that the demand-side shocks of oil price have a significant impact on the Chinese stock market in both short and long run, but the supply shock is an exception. In terms of asymmetric nature, there is no evidence of asymmetric impact when it refers to the supply shock and the oil-specific demand shock on stock market, and only the aggregate demand shock has asymmetric effect in short run. 相似文献
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《Asia-Pacific Journal of Financial Studies》2018,47(3):449-469
This study presents an example of the linearization of a complex mean‐risk investment problem. The spectral risk measure is employed as a measure of risk and assets are assumed to have autocorrelation and conditionally heteroskedastic volatilities. Simulation results indicate that the proposed method saves a great deal of computational time. Empirical studies show that this strategy, implemented with certain trading frequency constraints, outperforms the equal‐weighted portfolio, the classical mean‐variance method, and the corresponding market index in Taiwan, the US, and Japan when considering transaction costs and different economic conditions. 相似文献