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Loan Loss Reserves (LLR), Expected Loss (EL), and Value at Risks (VaR)
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作者 Mohd Yaziz Mohd Isa Yap Voon Choong +1 位作者 David Yong Gun Fie Md. Zabid Hj. Abdul Rashid 《Journal of Modern Accounting and Auditing》 2015年第4期218-222,共5页
This paper clarifies the distinctions between loan loss reserves (LLR), expected loss (EL), and loan loss provisions (LLP). The paper also includes information on individual and collective impairment assessment ... This paper clarifies the distinctions between loan loss reserves (LLR), expected loss (EL), and loan loss provisions (LLP). The paper also includes information on individual and collective impairment assessment of local commercial banks in Malaysia collected from their annual reports. Most banks have maintained collective assessment (CA) allowance ratio of lower than 1.2% of gross total loans. 展开更多
关键词 collective assessment (CA) loan loss reserves (LLR) value at risk var
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Conditional Value-at-Risk for Random Immediate Reward Variables in Markov Decision Processes
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作者 Masayuki Kageyama Takayuki Fujii +1 位作者 Koji Kanefuji Hiroe Tsubaki 《American Journal of Computational Mathematics》 2011年第3期183-188,共6页
We consider risk minimization problems for Markov decision processes. From a standpoint of making the risk of random reward variable at each time as small as possible, a risk measure is introduced using conditional va... We consider risk minimization problems for Markov decision processes. From a standpoint of making the risk of random reward variable at each time as small as possible, a risk measure is introduced using conditional value-at-risk for random immediate reward variables in Markov decision processes, under whose risk measure criteria the risk-optimal policies are characterized by the optimality equations for the discounted or average case. As an application, the inventory models are considered. 展开更多
关键词 MARKOV Decision Processes CONDITIONAL value-at-risk risk Optimal Policy INVENTORY Model
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Value evaluation of ecological risk of marine chemical spills 被引量:1
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作者 张继伟 杨志峰 +1 位作者 汤军健 陈楚汉 《Marine Science Bulletin》 CAS 2010年第2期74-84,共11页
The environmental risk of chemical spills near coastal zones threatens abundant marine ecological resources. By appraising the ecological damage value of the environmental risk of marine chemical spills, we can facili... The environmental risk of chemical spills near coastal zones threatens abundant marine ecological resources. By appraising the ecological damage value of the environmental risk of marine chemical spills, we can facilitate decision-making for the development of a coastal zone and establishment of economic policy on coastal zone management. In this study, the ecological effect of the environmental risk of a chemical spill in the Haicang chemical industrial park in Xiamen was identified, after which its impact was forecasted and its ecological damage value was assessed. The information generated in this study will be useful in future studies evaluating marine ecological compensation based on environmental risk analysis. 展开更多
关键词 MARINE chemical spill environmental risk assessment of ecological damage value
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绿色债券与其他金融市场间的风险溢出研究——基于TVP-VAR频域溢出模型 被引量:1
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作者 张国富 齐潇红 杜子平 《江苏大学学报(社会科学版)》 CSSCI 2024年第2期44-54,80,共12页
基于TVP-VAR频域溢出模型的风险溢出结果表明:绿色债券与其他金融市场之间的总溢出主要由短期溢出驱动;在不同的时间尺度,绿色债券和传统债券市场间存在显著的双向溢出效应,绿色债券市场与股票市场、能源市场、新能源市场、外汇市场之... 基于TVP-VAR频域溢出模型的风险溢出结果表明:绿色债券与其他金融市场之间的总溢出主要由短期溢出驱动;在不同的时间尺度,绿色债券和传统债券市场间存在显著的双向溢出效应,绿色债券市场与股票市场、能源市场、新能源市场、外汇市场之间的风险溢出均不显著;在重大事件冲击下,绿色债券市场与股票市场、能源市场、新能源市场间的风险溢出显著增加。 展开更多
关键词 绿色债券 TVP-var频域溢出 金融市场 风险冲击
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跨金融市场的风险传染和风险对冲:基于高维VAR for VaR模型的研究
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作者 杨涛 贾妍妍 《中国软科学》 CSSCI CSCD 北大核心 2024年第2期145-155,共11页
金融稳定需要防范和化解金融市场之间的风险传染。与以往文献只是探究两个市场的风险传染不同,本文利用高维VAR for VaR模型将中国的汇市、债市、大宗商品、金融期货和股市等五个金融市场纳入统一框架,分析这5个金融市场在不同状态的风... 金融稳定需要防范和化解金融市场之间的风险传染。与以往文献只是探究两个市场的风险传染不同,本文利用高维VAR for VaR模型将中国的汇市、债市、大宗商品、金融期货和股市等五个金融市场纳入统一框架,分析这5个金融市场在不同状态的风险溢出效应,这有助于捕捉冲击在不同金融市场之间传播而产生的间接影响。Wald检验和后验分析表明5个市场间只在危机或泡沫状态时存在明显的风险溢出效应。同时,本文利用压力测试发现单个市场的短期冲击影响会被其他金融市场如股市消化吸收,但4个金融市场都处于正常状态会明显降低其他金融市场如股市的左尾风险。此外,本文提出利用单个金融市场在同一时点的不同分位数计算每个金融市场在同一时点的预期收益、波动风险和崩盘风险,这种做法的好处在于结果更加稳健以及减轻极端值的影响。在此基础上,本文进一步探究金融市场间是否能够对冲彼此的波动风险和崩盘风险。结果显示大宗商品市场和金融期货市场能够有效地对冲其他金融市场的波动风险和崩盘风险,但汇市、债市和股市无法对冲其他金融市场的波动风险和崩盘风险。 展开更多
关键词 var for var 风险传染 风险对冲
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Risk measurement of international oil and gas projects based on the Value at Risk method 被引量:2
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作者 Cheng Cheng Zhen Wang +1 位作者 Ming-Ming Liu Xiao-Hang Ren 《Petroleum Science》 SCIE CAS CSCD 2019年第1期199-216,共18页
International oil and gas projects feature high capital-intensity, high risks and contract diversity. Therefore, in order to help decision makers make more reasonable decisions under uncertainty, it is necessary to me... International oil and gas projects feature high capital-intensity, high risks and contract diversity. Therefore, in order to help decision makers make more reasonable decisions under uncertainty, it is necessary to measure the risks of international oil and gas projects. For this purpose, this paper constructs a probabilistic model that is based on the traditional economic evaluation model, and introduces value at risk(VaR) which is a valuable risk measure tool in finance, and applies Va R to measure the risks of royalty contracts, production share contracts and service contracts of an international oil and gas project. Besides, this paper compares the influences of different risk factors on the net present value(NPV) of the project by using the simulation results. The results indicate:(1) risks have great impacts on the project's NPV, therefore, if risks are overlooked, the decision may be wrong.(2) A simulation method is applied to simulate the stochastic distribution of risk factors in the probabilistic model. Therefore, the probability is related to the project's NPV, overcoming the inherent limitation of the traditional economic evaluation method.(3) VaR is a straightforward risk measure tool, and can be applied to evaluate the risks of international oil and gas projects. It is helpful for decision making. 展开更多
关键词 risk measurement value at risk INTERNatIONAL oil and gas PROJECTS FISCAL TERMS - Probabilistic model
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Evaluating the potential of(epi)genotype‑by‑low pass nanopore sequencing in dairy cattle:a study on direct genomic value and methylation analysis
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作者 Oscar Gonzalez‑Recio Adrian Lopez‑Catalina +3 位作者 Ramon Peiro‑Pastor Alicia Nieto‑Valle Monica Castro Almudena Fernandez 《Journal of Animal Science and Biotechnology》 SCIE CAS CSCD 2023年第6期2276-2289,共14页
Background Genotype-by-sequencing has been proposed as an alternative to SNP genotyping arrays in genomic selection to obtain a high density of markers along the genome.It requires a low sequencing depth to be cost ef... Background Genotype-by-sequencing has been proposed as an alternative to SNP genotyping arrays in genomic selection to obtain a high density of markers along the genome.It requires a low sequencing depth to be cost effective,which may increase the error at the genotype assigment.Third generation nanopore sequencing technology offers low cost sequencing and the possibility to detect genome methylation,which provides added value to genotype-by-sequencing.The aim of this study was to evaluate the performance of genotype-by-low pass nanopore sequencing for estimating the direct genomic value in dairy cattle,and the possibility to obtain methylation marks simultaneously.Results Latest nanopore chemistry(LSK14 and Q20)achieved a modal base calling accuracy of 99.55%,whereas previous kit(LSK109)achieved slightly lower accuracy(99.1%).The direct genomic value accuracy from genotype-by-low pass sequencing ranged between 0.79 and 0.99,depending on the trait(milk,fat or protein yield),with a sequencing depth as low as 2×and using the latest chemistry(LSK114).Lower sequencing depth led to biased estimates,yet with high rank correlations.The LSK109 and Q20 achieved lower accuracies(0.57-0.93).More than one million high reliable methylated sites were obtained,even at low sequencing depth,located mainly in distal intergenic(87%)and promoter(5%)regions.Conclusions This study showed that the latest nanopore technology in useful in a LowPass sequencing framework to estimate direct genomic values with high reliability.It may provide advantages in populations with no available SNP chip,or when a large density of markers with a wide range of allele frequencies is needed.In addition,low pass sequencing provided nucleotide methylation status of>1 million nucleotides at≥10×,which is an added value for epigenetic studies. 展开更多
关键词 Genomic selection Genomic values Low pass sequencing Low sequencing imputation Polygenic risk score
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类ChatGPT人工智能技术嵌入智慧图书馆:应用价值、潜在风险及防控策略 被引量:15
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作者 刘凌宇 徐中阳 《图书馆理论与实践》 CSSCI 2024年第2期45-55,共11页
文章采用历史研究法、文献调查法以及理论分析法,在梳理ChatGPT的发展历程及其主要技术特征的基础上,深入分析了类ChatGPT人工智能技术嵌入智慧图书馆的应用价值、潜在风险以及风险防控策略。研究显示,类ChatGPT嵌入智慧图书馆具有提高... 文章采用历史研究法、文献调查法以及理论分析法,在梳理ChatGPT的发展历程及其主要技术特征的基础上,深入分析了类ChatGPT人工智能技术嵌入智慧图书馆的应用价值、潜在风险以及风险防控策略。研究显示,类ChatGPT嵌入智慧图书馆具有提高资源建设质量、优化用户服务体验、实现人员数智赋能、促进管理决策转型等应用价值,但同时也存在知识产权保护难度上升、人机互动产生误导冲突、信息安全保护遭受冲击、管理决策过度依赖技术、复合型馆员有严重缺口等潜在风险。对此,智慧图书馆应制定构建版权协同保护体系、全面构建技术治理机制、完善数据安全保障体系、创新组织领导管理机制以及推动技术人力资源建设等风险防控策略,以增强风险防控能力。 展开更多
关键词 ChatGPT 智慧图书馆 人工智能 应用价值 潜在风险 防控策略
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A Comparative Analysis of Amazon,Microsoft,and Apple’s Stock Investment Value
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作者 Yimeng Ma 《Psychology Research》 2023年第9期436-441,共6页
This paper provides a comparative analysis of the stock investment value of Amazon,Microsoft,and Apple,three global companies that investors may consider when investing in stocks.The author analyzes each company’s bu... This paper provides a comparative analysis of the stock investment value of Amazon,Microsoft,and Apple,three global companies that investors may consider when investing in stocks.The author analyzes each company’s business diversity,financial situation,and industry competition.Amazon is a leading e-commerce company with strong domestic and international competitors in the field of e-commerce and cloud computing.Microsoft is a stable company with a dominant position in the personal computer operating system market and a growing market share in the field of cloud computing.Apple has a diverse product line,including hardware and software products,and faces competition from many competitors,but maintains its competitiveness in the market by investing in technological innovation.The paper concludes that the stock market is full of opportunities and challenges.And investors need to have a certain risk awareness and long-term investment vision.The analysis provided in this paper can help different investors select stocks that suit their preferences and investment objectives.The paper uses data from Yahoo Finance and company websites to provide an overview of each company’s performance,net sales,and stock prices compare the calculation results,and then select the stocks that investors with different preferences prefer. 展开更多
关键词 investment value risk profitability ratios BENEFIT
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Analysis of Conditional Value-at-Risk for Newsvendor with Holding and Backorder Cost under Market Search 被引量:4
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作者 LI Jianbin GAO Chengxiu +1 位作者 HU Wei YANG Lei 《Wuhan University Journal of Natural Sciences》 CAS 2007年第6期979-984,共6页
We consider a distribution system with one supplier and two retailers. For the two retailers, they face different demand and are both risk averse. We study a single period model which the supplier has ample goods and ... We consider a distribution system with one supplier and two retailers. For the two retailers, they face different demand and are both risk averse. We study a single period model which the supplier has ample goods and the retailers order goods separately. Market search is measured as the fraction of customers who unsatisfied with their "local" retailer due to stock-out, and search for the goods at the other retailer before leaving the system. We investigate how the retailers game for order quantity in a Conditional Value-at-Risk framework and study how risk averse degree, market search level, holding cost and backorder cost influence the optimal order strategies. Furthermore, we use uniform distribution to illustrate these results and obtain Nash equilibrium of order strategies. 展开更多
关键词 risk averse Conditional value-at-risk market search game theory
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A Value-at-Risk Based Approach for PMU Placement in Distribution Systems
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作者 Min Liu 《Energy Engineering》 EI 2022年第2期781-800,共20页
With the application of phasor measurement units(PMU)in the distribution system,it is expected that the performance of the distribution system state estimation can be improved obviously with the PMU measurements into ... With the application of phasor measurement units(PMU)in the distribution system,it is expected that the performance of the distribution system state estimation can be improved obviously with the PMU measurements into consideration.How to appropriately place the PMUs in the distribution is therefore become an important issue due to the economical consideration.According to the concept of efficient frontier,a value-at-risk based approach is proposed to make optimal placement of PMU taking account of the uncertainty of measure errors,statistical characteristics of the pseudo measurements,and reliability of the measurement instrument.The reasonability and feasibility of the proposed model is illustrated with 12-node system and IEEE-33 node system.Simulation results indicated that uncertainties of measurement error and instrument fault result in more PMU to be installed,and measurement uncertainty is the main affect factor unless the fault rate of PMU is quite high. 展开更多
关键词 Distribution system state estimation(DSSE) efficient frontier meter placement phasor measurement units(PMU) value at risk(var) weighted least square(WLS)
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自然语言处理中的价值观渗透问题——以ChatGPT为例
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作者 李佳泓 黄嘉 古炬贤 《情报杂志》 CSSCI 北大核心 2024年第8期66-71,65,共7页
[研究目的]以ChatGPT为例,探讨自然语言处理中的价值观渗透方式和固化机理,探索在自然语言处理技术广泛应用的背景下,预防不可控信息的传播,巩固主流价值体系的方法路径。[研究方法]以描述性研究为基础,从ChatGPT驱动下价值观渗透的四... [研究目的]以ChatGPT为例,探讨自然语言处理中的价值观渗透方式和固化机理,探索在自然语言处理技术广泛应用的背景下,预防不可控信息的传播,巩固主流价值体系的方法路径。[研究方法]以描述性研究为基础,从ChatGPT驱动下价值观渗透的四种方式入手,研判可能出现的舆情传播态势。结合价值观的本身特点,综合科技哲学、伦理学等相关学科知识,整合提出目前存在的价值观渗透、固化风险,并提出相应的对策。[研究结论]通过与ChatGPT的结合,价值观能以数据投喂、自主示弱、自我优化、语言景观等方式强化其渗透过程中的隐蔽性,在渗透之后,将会通过隐性教化、知识内部分野和去实践化等方式进行固化,从而扩大影响。研究结合多领域知识,提出应对此种情况的三项基本原则:辩证扬弃、针锋相对和复合规制,力求促进情报搜集和舆情控制工作健康平稳发展。 展开更多
关键词 自然语言处理 价值观认同 价值观渗透 情报收集 舆情传播 ChatGPT 技术风险
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基于经验似然方法的Value-at-Risk估计
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作者 于培超 孟昭为 《重庆理工大学学报(自然科学)》 CAS 2010年第8期108-112,共5页
VaR(Value at Risk)是一种利用统计知识度量金融风险的方法,合理地确定GARCH模型是VaR计算的关键。针对这个问题,利用经验似然方法来估计VaR。模拟分析表明,经验似然方法比已有的方法简洁有效。
关键词 经验似然 GARCH模型 var
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Solving the subset sum problem by the quantum Ising model with variational quantum optimization based on conditional values at risk
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作者 Qilin Zheng Miaomiao Yu +3 位作者 Pingyu Zhu Yan Wang Weihong Luo Ping Xu 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2024年第8期43-55,共13页
The subset sum problem is a combinatorial optimization problem,and its complexity belongs to the nondeterministic polynomial time complete(NP-Complete)class.This problem is widely used in encryption,planning or schedu... The subset sum problem is a combinatorial optimization problem,and its complexity belongs to the nondeterministic polynomial time complete(NP-Complete)class.This problem is widely used in encryption,planning or scheduling,and integer partitions.An accurate search algorithm with polynomial time complexity has not been found,which makes it challenging to be solved on classical computers.To effectively solve this problem,we translate it into the quantum Ising model and solve it with a variational quantum optimization method based on conditional values at risk.The proposed model needs only n qubits to encode 2ndimensional search space,which can effectively save the encoding quantum resources.The model inherits the advantages of variational quantum algorithms and can obtain good performance at shallow circuit depths while being robust to noise,and it is convenient to be deployed in the Noisy Intermediate Scale Quantum era.We investigate the effects of the scalability,the variational ansatz type,the variational depth,and noise on the model.Moreover,we also discuss the performance of the model under different conditional values at risk.Through computer simulation,the scale can reach more than nine qubits.By selecting the noise type,we construct simulators with different QVs and study the performance of the model with them.In addition,we deploy the model on a superconducting quantum computer of the Origin Quantum Technology Company and successfully solve the subset sum problem.This model provides a new perspective for solving the subset sum problem. 展开更多
关键词 subset sum problem quantum Ising model conditional values at risk variational quantum optimization
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Multi scale risk measurement in electricity market:a wavelet based value at risk approach
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作者 Guu Sy-Ming Lai Kin Keung 《Journal of Southeast University(English Edition)》 EI CAS 2008年第S1期54-59,共6页
Value at risk (VaR) is adopted to measure the risk level in the electricity market. To estimate VaR at higher accuracy and reliability, the wavelet variance decomposed approach for value at risk estimates (WVDVaR) is ... Value at risk (VaR) is adopted to measure the risk level in the electricity market. To estimate VaR at higher accuracy and reliability, the wavelet variance decomposed approach for value at risk estimates (WVDVaR) is proposed. Empirical studies conduct in five Australian electricity markets, which evaluate the performances of both the proposed approach and the traditional ARMA-GARCH approach using the Kupiec backtesting procedure. Experimental results suggest that the proposed approach measures electricity market risks at higher accuracy and reliability than the bench mark ARMA-GARCH approach, as indicated by the higher p values during the Kupiec backtesting procedure. In addition, the new approach also provides more insight into the risk evolution process over time and helps in adjusting VaR estimates to the time horizons that best suit investor interests. The distribution of risk according to investor preferences is shown by decomposing VaR across different time horizons. This also provides important information for the appropriate aggregation of risk measures based on investor investment preferences. 展开更多
关键词 wavelet analysis value at risk risk management Australian electricity market
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Empirical Analysis of Value-at-Risk Estimation Methods Using Extreme Value Theory
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作者 Zhao Yuanrui & Tian Hongwei School of Management, Finance Center, Tianjin University, 300072, P. R. China 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2001年第1期13-21,共9页
This paper investigates methods of value-at-risk (VaR) estimation using extreme value theory (EVT). It compares two different estimation methods, 'two-step subsample bootstrap' based on moment estimation and m... This paper investigates methods of value-at-risk (VaR) estimation using extreme value theory (EVT). It compares two different estimation methods, 'two-step subsample bootstrap' based on moment estimation and maximum likelihood estimation (MLE), according to their theoretical bases and computation procedures. Then, the estimation results are analyzed together with those of normal method and empirical method. The empirical research of foreign exchange data shows that the EVT methods have good characters in estimating VaR under extreme conditions and 'two-step subsample bootstrap' method is preferable to MLE. 展开更多
关键词 value-at-risk (var) Extreme value theory (EVT) Generalized extreme value distribution Twr-step subsample bootstrap Maximum likelihood estimation.
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Market Risk Evaluation on Single Futures Contract:SV-CVaR Model and Its Application on Cu00 Data
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作者 周颖 张红喜 武慧硕 《Journal of Beijing Institute of Technology》 EI CAS 2009年第3期365-369,共5页
A new stochastic volatility(SV)method to estimate the conditional value at risk(CVaR)is put forward.Firstly,it makes use of SV model to forecast the volatility of return.Secondly,the Markov chain Monte Carlo(MCMC... A new stochastic volatility(SV)method to estimate the conditional value at risk(CVaR)is put forward.Firstly,it makes use of SV model to forecast the volatility of return.Secondly,the Markov chain Monte Carlo(MCMC)simulation and Gibbs sampling have been used to estimate the parameters in the SV model.Thirdly,in this model,CVaR calculation is immediate.In this way,the SV-CVaR model overcomes the drawbacks of the generalized autoregressive conditional heteroscedasticity value at risk(GARCH-VaR)model.Empirical study suggests that this model is better than GARCH-VaR model in this field. 展开更多
关键词 stochastic volatility model conditional value at risk risk evaluation Markov chain Monte Carlosimulation
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基于P-Box和CVaR并考虑灵活性的配电网区间优化方法
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作者 徐韩伟 刘丽军 +3 位作者 黄惠钰 谢锋 张林垚 陈飞雄 《高电压技术》 EI CAS CSCD 北大核心 2024年第4期1478-1487,I0028-I0030,共13页
为实现高比例可再生能源配电系统的安全经济调度,提出了一种计及风电、光伏出力与负荷预测误差的不确定性和配电网灵活性调用能力的日前区间优化调度方法。为避免传统方法在描述不确定性时的信息丢失问题、传统区间方法的保守性以及区... 为实现高比例可再生能源配电系统的安全经济调度,提出了一种计及风电、光伏出力与负荷预测误差的不确定性和配电网灵活性调用能力的日前区间优化调度方法。为避免传统方法在描述不确定性时的信息丢失问题、传统区间方法的保守性以及区间截断方法的冒进性,该文基于概率盒理论与条件风险价值方法计算不确定性因素的区间边界。随后,基于灵活性资源的实时调整能力,建立调度计划的灵活性时段耦合约束,并建立线路传输灵活性越限约束,以提高所提方法在调度过程的适应性。以配电网综合运行成本最小为优化目标,采用遗传算法进行求解。最后,基于IEEE-33节点配电系统、某地区实际配电网以及美国PG&E 69节点的算例分析表明,所提出的区间提取方法及调度模型能在保证配电网满足传输容量约束的同时达到系统运行成本最优。 展开更多
关键词 分布式发电 概率盒 条件风险价值 配网灵活性 日前调度
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STUDY ON THE INTERRELATION OF EFFICIENT PORTFOLIOS AND THEIR FRONTIER UNDER t DISTRIBUTION AND VARIOUS RISK MEASURES
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作者 Wang Yi Chen Zhiping Zhang Kecun 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2006年第4期369-382,共14页
In order to study the effect of different risk measures on the efficient portfolios (fron- tier) while properly describing the characteristic of return distributions in the stock market, it is assumed in this paper ... In order to study the effect of different risk measures on the efficient portfolios (fron- tier) while properly describing the characteristic of return distributions in the stock market, it is assumed in this paper that the joint return distribution of risky assets obeys the multivariate t-distribution. Under the mean-risk analysis framework, the interrelationship of efficient portfolios (frontier) based on risk measures such as variance, value at risk (VaR), and expected shortfall (ES) is analyzed and compared. It is proved that, when there is no riskless asset in the market, the efficient frontier under VaR or ES is a subset of the mean-variance (MV) efficient frontier, and the efficient portfolios under VaR or ES are also MV efficient; when there exists a riskless asset in the market, a portfolio is MV efficient if and only if it is a VaR or ES efficient portfolio. The obtained results generalize relevant conclusions about investment theory, and can better guide investors to make their investment decision. 展开更多
关键词 mean-risk model portfolio optimization value at risk expected shortfall efficient frontier.
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基于矩信息的不确定集下CVaR的定量统计稳健性
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作者 刘兆萌 韩有攀 《延边大学学报(自然科学版)》 CAS 2024年第2期54-59,共6页
研究了在最坏情况下CVaR的定量统计稳健性.首先,推导出了CVaR关于随机向量是Lipschitz的;其次,证明了在Kantorovich度量下,分布不确定集在某一确定点附近是局部Lipschitz的,由此得出分布式鲁棒CVaR模型的最优值函数满足Lipschitz连续性... 研究了在最坏情况下CVaR的定量统计稳健性.首先,推导出了CVaR关于随机向量是Lipschitz的;其次,证明了在Kantorovich度量下,分布不确定集在某一确定点附近是局部Lipschitz的,由此得出分布式鲁棒CVaR模型的最优值函数满足Lipschitz连续性;最后,在最坏情况下推导出了CVaR的定量统计稳健性. 展开更多
关键词 鲁棒风险度量 不确定集 定量统计稳健性 条件风险价值
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