The theory and practice of finance draws heavily on probability theory. All MBA programs prepare finance majors for their career in the profession by requiring one generalist course in probability theory and statistics attended by all business majors. While several probability distributions are covered in the course, the primary focus is on the normal or Gaussian distribution. Students find it easy to understand and apply the normal distribution: Give them the expected value and standard deviation and probability statements about outcomes can be easily made. Moreover, even if a random variable of interest is not normally distribution, students are told that a theorem in statistics called the Central Limit Theorem proves that under certain conditions the sum of independent random variables will be asymptotically normally distributed. Loosely speaking, this means that as the number of random variables are summed, the sum will approach a normal distribution. Armed with this rudimentary knowledge of probability theory, finance students march into their elective courses in finance that introduce them to the quantitative measures of risk (the standard deviation) and the quantitative inputs needed to implement modern portfolio theory (the expected value or mean and the standard deviation). In listing assumptions for most theories of finance, the first assumption on the list is often: “Assume asset returns are normally distributed.” The problem, however, is that empirical evidence does not support the assumption that many important variables in finance follow a normal distribution. The application of the Central Limit Theorem to such instances is often inappropriate because the conditions necessary for its application are not satisfied. And this brings us to the purpose of this book. Our purpose is fourfold. First, we explain alternative probability distributions to the normal distributions for describing asset returns as well as defaults. We focus on the stable Paretian (or alpha stable) distribution because of the strong support for that distribution that dates back four decades to the seminal work of Benoit Mandelbrot. Second, we explain how to estimate distributions. Third, we present empirical evidence rejecting the hypothesis that returns for stocks and bonds are normally distributed T and instead show that they exhibit fat tails and skewness. Finally, we explain the implications of fat tails and skewness to portfolio selection, risk management, and option pricing. We must admit that our intent at the outset was to provide a “nontechnical” treatment of the topic. However, we could not do so. Rather, we believe that we have provided a less technical treatment than is provided in the many excellent books and scholarly articles that deal with probability and statistics applied to finance and risk management. The book is not simple reading. It must be studied to appreciate the pitfalls that result from the application of the normal distribution to real-world financial problems.
2022-11-03 17:23:34 10.49MB fat-tailed skewed asset return
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Filtering Distributions of Normals for Shading Antialiasing
2022-11-02 13:03:33 3.47MB AA
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Probability Distributions Involving Gaussian Random Variables.pdf
2022-04-07 20:46:31 5.11MB distribution
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资源来自pypi官网。 资源全名:done_distributions-0.1.tar.gz
2022-01-11 09:07:30 3KB Python库
自述文件 该存储库是做什么用的? 它是用于从Von-Mises Fisher和Watson分布生成随机样本的MATLAB代码。 该代码是以下论文中工作的一部分: 陈玉辉等。 “ ”信号处理快报,IEEE 22.8(2015):1152-1155。 陈玉辉等。 “ ”信息融合国际会议(印刷中,2015年) 安装 该代码是自打包的,因此不需要任何安装。 只需使用MATLAB中的“ addpath”将路径添加到文件夹即可使用这些功能。 每个函数都有自己的测试用例,扩展名为“ _test”。 测试用例显示了如何使用这些功能的简单示例。 生成VMF和Watson随机样本的两个主要函数是: randVMF 兰德·沃森 联络资料 该存储库由密西根大学的Yu-Hui Chen @ 教授小组创建和拥有。 如果您对代码有任何疑问或发现任何错误,请通过以下方式与我联系: 可以在我们实验室的上找到
2021-12-26 16:37:30 156KB MATLAB
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文章主要介绍了DDS高级数据中心接口取代了以消息为中心的编程和基本技术概念等相关内容。来自于dds-foundation.org,由火龙果软件Anna译、推荐。数据分发服务(DDS™)是一个由对象管理组(OMG)发布的以数据为中心的中间件协议和API标准。DDS集成系统中的各个组件,提供低延迟数据连接、高可靠性以及高可扩展体系结构,以适应商业级物联网(IoT)应用程序的需求。在分布式系统中,中间件是位于操作系统和应用程序之间的软件层。它使系统的各个组件能够更轻松地通信和共享数据。它简化了分布式系统的开发,让软件开发人员专注于其应用程序的特定用途,而不是在应用程序和系统之间传递信息的机制。DDS
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这项工作首先证明了基于电子束蒸发二氧化f(HfO2)的无杂质空位扩散(IFVD)诱导的量子阱混合(QWI)。 红光二极管激光晶片具有两个6纳米厚的GaInP量子阱和三个8纳米厚的AlGaInP量子势垒的有源区。 在200℃下在二极管激光晶片的表面上蒸发出135nm厚的HfO 2膜。 QWI过程是通过在不同温度下快速热退火(RTA)20 s引起的。 发现活性区域发射波长的强度和半峰全宽(FWHM)分别随着退火温度的升高而增加和降低。 当样品在1000°C退火时,HfO2 IFVD诱导的QWI发现蓝移为18 nm。 此外,基于活性区域中的浓度分布来计算扩散长度和扩散系数,并且扩散系数值高于Zn杂质扩散诱导的QWI中的结果。
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matlab泊松分布验证代码概率分布比较 该项目是B.Tech三年级概率和随机过程课程的一部分,在该课程中,我试图验证以下近似值并绘制不同概率分布的概率分布函数/概率质量函数以进行比较。 二项分布趋于正态分布 二项分布趋于泊松分布 泊松分布趋于正态分布 趋于二项式分布的超几何分布 该项目是使用MATLAB 2020a完成的。 存储库内容:- binomial_and_normal.m-用于验证二项分布趋于正态分布的近似值的MATLAB代码 binomial_and_poisson.m-用于验证二项分布趋于泊松分布的近似值的MATLAB代码 poisson_and_normal.m-用于验证Poisson分布趋于正态分布的近似值的MATLAB代码 hypergeometric_and_binomial.m-用于验证超几何分布趋于二项分布的近似值的MATLAB代码 binomial_vs_normal.pdf-包含用于验证案例的代码和图的PDF文件 binomial_vs_poisson.pdf-包含用于验证案例的代码和图的PDF文件 poisson_vs_normal.pdf-包含用于验
2021-09-21 15:43:06 1.44MB 系统开源
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两个高斯分布之间的 Kullback-Leibler 散度
2021-08-25 17:33:11 2KB matlab
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Continuous Univariate Distributions, Vol.
2021-08-15 18:43:05 19.78MB Continuous Univariate Distributions
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