Dissertations / Theses on the topic 'Product of independent random variables'
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Kasparavičiūtė, Aurelija. "Theorems of large deviations for the sums of a random number of independent random variables." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140121_101308-41106.
Full textDisertacinio darbo tyrimo objektas yra atsitiktinio dėmenų skaičiaus nepriklausomų vienodai pasiskirsčiusių atsitiktinių dydžių su teigiamais svoriniais koeficientais sumos, kurios kaip modelis sutinkamos, pavyzdžiui, finansų, draudos matematikose. Daromos prielaidos, kad atsitiktinis dėmenų skaičius yra nepriklausomas nuo sumos dėmenų, atsitiktiniai dėmenys tenkina apibendrintą S. N. Bernšteino sąlygą, o atsitiktinis dėmenų skaičius kartu su svoriais tenkina tam tikras suderinamumo sąlygas. Disertacijos tikslas yra standartizuotos (centruotos ir normuotos) minėtos atsitiktinės sumos skirstinio aproksimacija standartiniu normaliuoju dėsniu didžiųjų nuokrypių tiek Kramero, tiek ir laipsninėse Liniko zonose.
Sambale, Holger [Verfasser]. "Second order concentration for functions of independent random variables / Holger Sambale." Bielefeld : Universitätsbibliothek Bielefeld, 2016. http://d-nb.info/1084888173/34.
Full textWu, Hao-cun. "Independent component analysis and its applications in finance." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39559099.
Full text吳浩存 and Hao-cun Wu. "Independent component analysis and its applications in finance." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39559099.
Full textBaumgarten, Christoph [Verfasser], and Frank [Akademischer Betreuer] Aurzada. "Persistence of sums of independent random variables, iterated processes and fractional Brownian motion / Christoph Baumgarten. Betreuer: Frank Aurzada." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2013. http://d-nb.info/1035276445/34.
Full textStaskevičiūtė, Simona. "Atsitiktinių dydžių sandaugų tikimybiniai skirstiniai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130617_182710-60131.
Full textThe mathematical statistics probability distributions are analyzed in this master thesis. The main purpose is to carry out the analysis of independent beta random variables products distribution. This theme is relevant to the reliability analysis of complex systems theory. The theoretics of unlimited divisible probability distributions is described in this master thesis. Following theory is useful to investigate the sums of independent random variables. The theoretics of M-divisible probability distributions is also described in this master thesis. It is useful to investigate the product of independent random variables. Two theorems about the product of finite number of independent beta random variables are formulated in this master thesis. Following theorems tells us, that product is beta random variable again, and its parameters expressions are related with multiplicands parameters. Theorems are proved when we are multiplying two independent beta random variables. Another theorem that is about characteristic function of beta random variable logarithm is formulated and proved in this master thesis.
Paditz, Ludwig. "Über die Annäherung von Summenverteilungsfunktionen gegen unbegrenzt teilbare Verteilungsfunktionen in der Terminologie der Pseudomomente." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-112967.
Full textThe pseudo-moments serve as a characteristic of the approach of the components of a cumulative distribution function to the components of the limit distribution function. In the terminology of pseudo-moments estimates of the approximation of the cumulative distribution function by an indefinite divisible distribution function can be specified. The results are derived without the assumption of the so-called condition of infinitesimality. There are given some estimations with or without the assumption of finite variances. Finally some references are given
Halconruy, Hélène. "Calcul de Malliavin et structures de Dirichlet pour des variables aléatoires indépendantes." Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAT016.
Full textMalliavin calculus was initially developed to provide an infinite-dimensional variational calculus on the Wiener space and further extended to other spaces. In this work, we develop such one in two discrete frameworks. First, we equip any countable product of probability spaces with a discrete Dirichlet-Malliavin structure, consisting of a family of Malliavin operators (gradient, divergence, number operator), an integration by parts formula, and the induced Dirichlet forms. We get the analogues of the classical functional identities and retrieve the usual Poisson and Brownian Dirichlet structures as limits of our induced structures. We provide discrete Stein-Malliavin criterions for the Normal and the Gamma approximations. Second we study insider's trading in a ternary model, Iying on a three-points compound geometric process. We state a modified chaotic decomposition and define the geometric gradient and divergence operators as the annihilation and creation operators acting on it. We state a geometric Ocone-Karatzas formula. We express the insider's additional expected logarithmic utility in terms of relative entropy as in the continuous case
Bacro, Jean-Noël. "Sur les accroissements des processus de sommes partielles de variables aléatoires indépendantes." Paris 6, 1986. http://www.theses.fr/1986PA066372.
Full textPaditz, Ludwig. "Über mittlere Abweichungen." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-112977.
Full textIn this paper we study necessary and sufficient conditions for the validity of limit theorems on moderate deviations. Usually x-zones for moderate deviations are called in the terminilogy by YU.V.LINNIK (1971) "very narrow" zones of integral normal attraction. Moreover we analyse the remainder term appearing in the asymptotic relations. Informations on the order of the rate of convergence are given. Earlier results by several authors are generalized. Finally some references are given
Gomes, Eduardo Monteiro de Castro. "Modelo Rathie-Swamee: aplicações e extensão para modelo de regressão." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11134/tde-26072013-105052/.
Full textApplications and extensions to the Rathie-Swamee models are presented in this work. Proposed by Rathie and Swamee (2006), the Rathie-Swamee models were developed as a generalization to the logistic distribution. These models have great flexibility, assuming unimodal and multimodal shapes, and have some of its applications exemplified with bimodal data of shrimp fishing and geyser eruptions. By the use of simulations, the performance of different methods to obtain confidence intervals are compared. The extensions presented for the Rathie-Swamee models refer to the inclusion of covariates, creating regression models. These new regression models are fitted to fishing and eruption data, to exemplify some applications of the models. A new probability distribution is presented as the resulting distribution of quotients and products between independent random variables with Rathie-Swamee distributions. For this new distribution are presented some simulation results along with a table of quantiles for some percentage points of interest.
Paditz, Ludwig. "Über die Annäherung der Verteilungsfunktionen von Summen unabhängiger Zufallsgrößen gegen unbegrenzt teilbare Verteilungsfunktionen unter besonderer Beachtung der Verteilungsfunktion der standardisierten Normalverteilung." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-114206.
Full textWith the presented work new contributions to basic research in the field of limit theorems of probability theory are given. Limit theorems for sums of independent random variables taking on the most diverse lines of research in probability theory an important place in modern times and are no longer only of theoretical interest. In the work results are presented to newer problems on the summation theory of independent random variables, at first time in the fifties and sixties of the 20th Century appeared in the literature and have been studied in the past few years with great interest. International two main directions have emerged in the theory of limit theorems: Firstly, the questions on the convergence speed of a cumulative distribution function converges to a predetermined limit distribution function, and on the other hand the questions on an error estimate for the limit distribution function at a finite summation process. First indefinite divisible limit distribution functions are considered, then the normal distribution is specifically discussed as a limit distribution. As characteristic parameters both moments or one-sided moments or pseudo-moments are used. The error estimates are stated both in uniform as well as non-uniform residual bounds including a description of the occurring absolute constants. Both the method of characteristic functions as well as direct methods (convolution method) can be further expanded as proof methods. Now for the error estimate, 1965 given by Bikelis, was the first time to estimate the appearing absolute constant C with C = 114.667 numerically. Furthermore, in the work of so-called limit theorems for moderate deviations are studied. Here also remainder estimates are derived for the first time. In recent years to the proof of limit theorems the chosen way of the convolution of distribution functions proved to be groundbreaking and determined the development of both the theory of limit theorems for moderate and large deviations as well as the investigation into the nonuniform estimates in the central limit theorem significantly. The convolution method is in the present thesis, the main instrument of proof. Thus, it was possible to obtain a series of results and obtain new numerical results in particular by means of electronic data processing
Gaunt, Robert E. "Rates of convergence of variance-gamma approximations via Stein's method." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:5ddc6def-5821-4e72-8784-cfe2dc8b6c03.
Full textBroto, Baptiste. "Sensitivity analysis with dependent random variables : Estimation of the Shapley effects for unknown input distribution and linear Gaussian models." Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS119.
Full textSensitivity analysis is a powerful tool to study mathematical models and computer codes. It reveals the most impacting input variables on the output variable, by assigning values to the the inputs, that we call "sensitivity indices". In this setting, the Shapley effects, recently defined by Owen, enable to handle dependent input variables. However, one can only estimate these indices in two particular cases: when the distribution of the input vector is known or when the inputs are Gaussian and when the model is linear. This thesis can be divided into two parts. First, the aim is to extend the estimation of the Shapley effects when only a sample of the inputs is available and their distribution is unknown. The second part focuses on the linear Gaussian framework. The high-dimensional problem is emphasized and solutions are suggested when there are independent groups of variables. Finally, it is shown how the values of the Shapley effects in the linear Gaussian framework can estimate of the Shapley effects in more general settings
Paditz, Ludwig. "Über eine Fehlerabschätzung im zentralen Grenzwertsatz." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-112986.
Full textWe consider a sequence of centered and independent random variables with moments of order m, 2
Paditz, Ludwig. "Abschätzungen der Konvergenzgeschwindigkeit im zentralen Grenzwertsatz." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-112958.
Full textThe paper is a generalization of the results, published by the author in Informationen/07; 1976,05. Let F_n(x) be the cdf of X_1+X_2+...+X_n, where X_1, X_2, ...,X_n are non iid random variables with m-th absolute moment c_m, m>2, and Phi the cdf of the unit normal law. Explicit universal constants L_m are computed such that we have some error estimates in the nonuniform central limit theorem. A special case is the nonuniform error bound by A.BIKELIS (1966) in the case of existence of third absolute moments. Furthermore limit theorems with assumption of onesided moments are considered. Some references are given
Paditz, Ludwig. "Beiträge zur expliziten Fehlerabschätzung im zentralen Grenzwertsatz." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-115105.
Full textIn the work the asymptotic behavior of suitably centered and normalized sums of random variables is investigated, which are either independent or occur in the case of dependence as a sequence of martingale differences or a strongly multiplicative system. In addition to the classical theory of summation limiting processes are considered with an infinite summation matrix or an adapted sequence of weighting functions. It will be further developed the method of characteristic functions, and especially the direct method of the conjugate distribution functions to prove quantitative statements about uniform and non-uniform error estimates of the remainder term in central limit theorem. The investigations are realized in the Lp metric, 1
Paditz, Ludwig. "Abschätzungen der Konvergenzgeschwindigkeit zur Normalverteilung unter Voraussetzung einseitiger Momente (Teil 1)." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-112930.
Full textThe paper is divided in two parts: part 1 (cp. Informationen/07; 1976,05) and part 2 (cp. Informationen/07; 1976,06). Part 1 contains an introduction and limit theorems for iid random variables and the transfer of the considered limit theorems to the case of the existence of onesided moments. Part 2 contains limit theorems of moderate deviations for sums of series of non iid random variables and a discussion of all obtained results in part 1 and 2 and finally some references. Let F_n(x) be the cdf of X_1+X_2+...+X_n, where X_1, X_2, ...,X_n are iid random variables with mean 0 and variance 1 and with m-th absolute moment c_m, m>2, and Phi the cdf of the unit normal law. Explicit universal constants L_i are computed such that we have an error estimate in the nonuniform central limit theorem with the L_i, where i corresponds to the five cases considered: small x, moderate deviations for x, large deviations for x, small n , large n. Additional upper bounds for 1-F_n(x) are obtained if the one-sided moments of order m, m>2, are finite and if x>D_m*n^(1/2)*ln(n) and x>D_m*n^(1/2)*(ln(n))^(1/2) respectively improving results by S.V.NAGAEV (1965)
Paditz, Ludwig. "Abschätzungen der Konvergenzgeschwindigkeit zur Normalverteilung unter Voraussetzung einseitiger Momente (Teil 2)." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-112947.
Full textThe paper is divided in two parts: part 1 (cp. Informationen/07; 1976,05) and part 2 (cp. Informationen/07; 1976,06). Part 1 contains an introduction and limit theorems for iid random variables and the transfer of the considered limit theorems to the case of the existence of onesided moments. Part 2 contains limit theorems of moderate deviations for sums of series of non iid random variables and a discussion of all obtained results in part 1 and 2 and finally some references. Let F_n(x) be the cdf of X_1+X_2+...+X_n, where X_1, X_2, ...,X_n are iid random variables with mean 0 and variance 1 and with m-th absolute moment c_m, m>2, and Phi the cdf of the unit normal law. Explicit universal constants L_i are computed such that we have an error estimate in the nonuniform central limit theorem with the L_i, where i corresponds to the five cases considered: small x, moderate deviations for x, large deviations for x, small n , large n. Additional upper bounds for 1-F_n(x) are obtained if the one-sided moments of order m, m>2, are finite and if x>D_m*n^(1/2)*ln(n) and x>D_m*n^(1/2)*(ln(n))^(1/2) respectively improving results by S.V.NAGAEV (1965)
Silva, Mariana Barbosa da. "Estimadores do tipo n?cleo para Vari?vei s I.I.D. com espa?o de estados geral." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17011.
Full textCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior
In this work, the paper of Campos and Dorea [3] was detailed. In that article a Kernel Estimator was applied to a sequence of random variables with general state space, which were independent and identicaly distributed. In chapter 2, the estimator?s properties such as asymptotic unbiasedness, consistency in quadratic mean, strong consistency and asymptotic normality were verified. In chapter 3, using R software, numerical experiments were developed in order to give a visual idea of the estimate process
Neste trabalho estudamos um dos m?todos n?o-param?trico: os Estimadores do Tipo N?cleo associado a uma sequ?ncia de vari?veis aleat?rias independentes e identicamente distribu?das com espa?o de estados geral, mais precisamente o trabalho de Campos e Dorea [3]. No Cap?tulo 2 verificamos as boas qualidades dessa classe de estimadores como n?o v?cio assint?tico, converg?ncia em m?dia quadr?tica, consist?ncia forte e normalidade assint?tica. No Cap?tulo 3 com o auxilio do software R temos uma id?ia visual do que ocorre no processo de estima??o
黃彥青. "PAIRWISE INDEPENDENT RANDOM VARIABLES." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/47864460351789081997.
Full text國立中央大學
數學研究所
89
Abstract Pairwise independence is not enough for the central limit theorem to hold. In my thesis, some related results are mentioned. I also give some new version of conditions such that the central limit theorem would hold for pairwise independent sequences. Finally, I give an example to illustrate the results.
Karlová, Andrea. "Možnosti se stabilními distribucemi." Doctoral thesis, 2013. http://www.nusl.cz/ntk/nusl-327226.
Full textSzuma, Pei-Wen, and 司馬佩文. "On Asymptotics of Order Statistics in Independent Nonidentically Distributed Random Variables." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/31842658859576475036.
Full text國立中山大學
應用數學研究所
84
Let {X_n, n>= 1} be a sequence of independent random variables with continuous distribution functions {F_n, n>= 1}, and X_{[1: n]}<= X_{[2:n]}<= ... <= X_{[n:n]} be the corresponding order statistics for sample size n. For every k (1<= k <= n), let F_{kn} denote the distribution function of X_{[k:n]} and M_n= max{X_1,...,X_n}. For this work, when {F_n, n>= 1} come from some special families with certain parameters, we are interested in finding some conditions for those parameters to determine $a_n$ and $b_n$ such that F_{nn}(a_nx+b_n) converges to a nondegenerate distribution. When {F_n, n>= 1} come from general families, we also find some conditions for {F_n, n>= 1}, a_n and b_n such that F_{kn}(a_nx+b_n) converges to standard Normal distribution, where k=qn, q in (0,1).
Shiu, Shang-Yuan, and 須上苑. "A Study of Complete Convergence for sequences of Independent Random Variables." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/37694870443392204530.
Full textHsu, Shih-Yi, and 許世易. "The Rate of Complete Convergence for 2m Independent and Identical Distributed Random Variables." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/17501214365158068459.
Full textYu, Po-Chuan, and 游伯銓. "Law of the large numbers and probability inequalities for the independent random variables." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/52106970328366021182.
Full text淡江大學
數學系
82
The techniques and the relative mathematical devices for proving the strong law of large numbers (S.L.L.N.) are studied in the thesis. We discuss how to slve the almost sure (a.s.) convergence problems of the sequence of partial sum. That is to deal with the S.L.L.N. The fundamental methods for proving the S.L.L.N. are surveyed in chapter 1. For understanding the application of the fundamental methods, the fundamental methods are used to prove Borel's S.L.L.N.By virtue of this study process, we will have a better and widespread understanding of the allied mathematical devicse for proving S.L.L.N. 4 fundamental methods for proving S.L.N.N. are collected and discussed. The extensive explorations on the mathematical devices of the above 4 fundamental methods are proposed in chapter 2. For better understanding method 1, we investigate the probability inequalities of partial sum. The curcial step in method 2 is to control the convergence of difference between convergent subsequence and original sequence. Method 3 has relation to the convergence of infinite series. The upper bounds of moment generating functions are explored when fundamental method 4 is used to prove S.S.L.N. the foregoing upper bounds have relation to the Gaussian random variable, so we study the application of the Gaussian random variable. The sufficent and necessary conditions of S.L.L.N. are surveyed in chapter 3 and 4 respectively.
陳秋帆. "Evaluate the distribution of a product of two random variables by Saddlepoint Approximation." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/44575243971322329453.
Full textLin, Yan-Cheng, and 林彥丞. "Convergence Rates in the Law of Large Numbers for 2m Independent and Identically Distributed Random Variables." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/80483115600232551340.
Full text國立清華大學
數學系
90
Let Xi, i=1…∞ be a sequence of 2m independent and identically distributed random variables . given suitable moment condition ,we are interested in studying the rate of convergence .And we will find out how to choose m .
洪翊書. "A Study On Marcinkiewicz-Zygmund Type Strong Law of Large Numbers for Pairwise Independent Identically Distributed Random Variables." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/75297874249699887452.
Full textLiao, yeong-yuan, and 廖永源. "Estimating the number of change points in a sequence of independent normal random variables with unequal means or variances." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/49759045242329099926.
Full text國立中興大學
應用數學系
84
A simple method is proposed to detect the number of change points in a sequence of independent normal random variables. An estimator to maximize some criterion, saySC(k), which is to maximize the log likelihood function withsome penalty term is used in detection. Under some mild assumptions, the consistency of the estimator for the true number of change points and the boundedness between the estimated change locations and the true change locations are obtained.
Liao, Yong Yuan, and 廖永源. "Estimating the number of change points in a sequence of independent normal random variables with unequal means or variances." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/93180104253872570091.
Full textYi-Ching, Lin, and 林依晴. "A Study of Satisfaction on Travel Service Websites for Independent Travelers-Using Product Involvement as Moderating Variables." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/ncvqzj.
Full text大葉大學
企業管理學系碩士班
102
The tourism is the Smokeless Industry that the countries all over the world in the 21st century generally pay attention to. The tourism in addition to creating employment opportunities and increase foreign exchange income, the local socio-economic development have also played an important role ,and it also has been as one of the star industry in Taiwan. Affected by the global information network. and e-commerce to flourish, all kinds of travel websites have been establishment. Various typs of tourism websites have been providing a very rich tourist information services and so on. Therefore, this study aims to investigate the relationship among independent travelers and its satisfaction on travel service websites , given product involvement as moderating variables. Three hundred eighty two valid questionnaries have been collected, and SPSS is used for empirical analysis. Through the use of descriptive statistical analysis, reliability and validity analysis, t-test, ANOVA, Pearson correlation plot analysis of variance, and structural equation model fit test, we found: 1.There were significant satisfaction on travel service websites for independent travelers. 2.The different product involvement degree will affect satisfaction on travel service websites for consumer.
Paditz, Ludwig. "Beiträge zur expliziten Fehlerabschätzung im zentralen Grenzwertsatz." Doctoral thesis, 1988. https://tud.qucosa.de/id/qucosa%3A26930.
Full textIn the work the asymptotic behavior of suitably centered and normalized sums of random variables is investigated, which are either independent or occur in the case of dependence as a sequence of martingale differences or a strongly multiplicative system. In addition to the classical theory of summation limiting processes are considered with an infinite summation matrix or an adapted sequence of weighting functions. It will be further developed the method of characteristic functions, and especially the direct method of the conjugate distribution functions to prove quantitative statements about uniform and non-uniform error estimates of the remainder term in central limit theorem. The investigations are realized in the Lp metric, 1