• 제목/요약/키워드: pareto distribution

검색결과 204건 처리시간 0.022초

ON RELATIONS FOR QUOTIENT MOMENTS OF THE GENERALIZED PARETO DISTRIBUTION BASED ON RECORD VALUES AND A CHARACTERIZATION

  • Kumar, Devendra
    • Journal of applied mathematics & informatics
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    • 제31권3_4호
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    • pp.327-336
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    • 2013
  • Generalized Pareto distributions play an important role in re-liability, extreme value theory, and other branches of applied probability and statistics. This family of distribution includes exponential distribution, Pareto distribution, and Power distribution. In this paper we establish some recurrences relations satisfied by the quotient moments of the upper record values from the generalized Pareto distribution. Further a char-acterization of this distribution based on recurrence relations of quotient moments of record values is presented.

RECURRENCE RELATIONS FOR QUOTIENT MOMENTS OF GENERALIZED PARETO DISTRIBUTION BASED ON GENERALIZED ORDER STATISTICS AND CHARACTERIZATION

  • Kumar, Devendra
    • 충청수학회지
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    • 제27권3호
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    • pp.347-361
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    • 2014
  • Generalized Pareto distribution play an important role in reliability, extreme value theory, and other branches of applied probability and statistics. This family of distribution includes exponential distribution, Pareto or Lomax distribution. In this paper, we established exact expressions and recurrence relations satised by the quotient moments of generalized order statistics for a generalized Pareto distribution. Further the results for quotient moments of order statistics and records are deduced from the relations obtained and a theorem for characterizing this distribution is presented.

Estimating exponentiated parameter and distribution of quotient and ratio in an exponentiated Pareto

  • Moon, Yeung-Gil;Lee, Chang-Soo;Kang, Jun-Ho
    • Journal of the Korean Data and Information Science Society
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    • 제21권5호
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    • pp.967-972
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    • 2010
  • We shall consider estimations of an exponetiated parameter of the exponentiated Pareto distribution with known scale and threshold parameters. A quotient distribution of two independent exponentiated Pareto random variables is obtained. We also derive the distribution of the ratio of two independent exponentiated Pareto random variables.

A Mixture of Multivariate Distributions with Pareto in Reliability Models

  • El-Gohary Awad
    • International Journal of Reliability and Applications
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    • 제7권1호
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    • pp.55-69
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    • 2006
  • This paper presents a new class of multivariate distributions with Pareto where dependence among the components is characterized by a latent random variable. The new class includes several multivariate and bivariate models of Marshall and Olkin type. It is found the bivariate distribution with Pareto is positively quadrant dependent and its mixture. Some important structural properties of the bivariate distributions with Pareto are discussed. The distribution of minimum in a competing risk Pareto model is derived.

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A NOTE ON THE CHARACTERIZATIONS OF PARETO DISTRIBUTION BY UPPER RECORD VALUES

  • Ahsanullah, Mohammad;Shakil, Mohammad
    • 대한수학회논문집
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    • 제27권4호
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    • pp.835-842
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    • 2012
  • Many researchers have studied the characterizations of probability distributions based on record values. It appears from literature that not much attention has been paid to the characterizations of the Pareto distribution. In this note, some new results on the characterizations of the Pareto distribution by upper record values have been established.

웹 서비스 환경에서 평균 응답 시간의 제약조건을 만족하는 최대 객체 크기의 추정 (Estimation of maximum object size satisfying mean response time constraint in web service environment)

  • 이용진
    • 사물인터넷융복합논문지
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    • 제9권3호
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    • pp.1-6
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    • 2023
  • 웹 서비스 환경에서 사용자가 원하는 서비스 품질을 만족하는 경제적인 방법의 하나는 객체의 크기를 조절하는 것이다. 이를 위해 본 연구에서는 서비스 품질로 평균 응답 시간이 임의의 임계값 이하로 주어질 때, 이 제약 조건을 만족하는 최대 객체의 크기를 구한다. 시스템이 정상 상태일 때, 라운드-로빈을 사용하는 결정 모델의 평균 응답 시간은 일반 분포를 따르는 큐잉 모델에서의 평균 응답 시간과 같아질 것으로 추론할 수 있다. 이를 기반으로 최대 객체 크기를 발견하기 위한 해석적 수식과 절차를 수립한다. 웹 트래픽은 서비스 분포로 Pareto 분포가 적합하므로 M/G(Pareto)/1 모델과 지수 분포를 사용한 M/G/1/PS를 적용하여 최대 객체의 크기를 구한다. 수치 계산을 통한 성능평가는 Pareto 분포의 형상 파라미터(shaping parameter)가 커짐에 따라 M/G(Pareto)/1 모델과 M/G/1/PS 모델의 최대 객체 크기가 같아짐을 보여준다. 본 연구의 결과는 경제적인 웹 서비스 제어를 위해 객체의 크기를 조절하는 환경에 사용될 수 있다.

결합 로그노말-파레토 분포에서 추출된 양쪽 중도 절단된 표본을 이용한 모수추정 (Estimation on composite lognormal-Pareto distribution based on doubly censored samples)

  • 이광호
    • Journal of the Korean Data and Information Science Society
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    • 제22권2호
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    • pp.171-177
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    • 2011
  • 최근에 비약적으로 발달하는 보험 산업에 수반하여 보험금 지불 분포에 대한 연구가 활발하게 진행되고 있다. 보험금 지불금의 분포는 일반적으로 두터운 꼬리를 가지면서 좌로 치우친 왜도를 가지는 파레토 분포나 로그노말 분포로 잘 설명된다고 알려져 왔으며 Cooray와 Ananda (2005)는 이들 두 분포를 결합한 결합 로그노말-파레토분포를 제시하고 이 분포의 적합도가 높음을 보였다. 그런데 보험금 지불의 경우 보금지불 총 금액의 한도로 인하여 극단적으로 큰 보험금이나 혹은 매우 사소한 보험지불금의 경우는 옵션을 두어 예외적으로 취금하는 경우가 많다. 본 논문에서는 결합 로그노말-파레토 분포로부터 추출된 표본이 양쪽 중도 절단되어 있는 경우에 대하여 모수를 추정하는 문제를 다루어 보았다.

Jackknife Estimation of the Coefficient of Variation in the Pareto Distribution

  • Woo, Jung-Soo;Kang, Suk-Bok
    • Journal of the Korean Statistical Society
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    • 제13권1호
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    • pp.42-47
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    • 1984
  • In this paper, the means of the estimators for the coefficient of variation (CV) in an underlying Pareto distribution are expressed in terms of confluent hypergeometric functions. The numericla values of the biases for the CV estimators in the Pareto distribution are also obtained.

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New approach for analysis of progressive Type-II censored data from the Pareto distribution

  • Seo, Jung-In;Kang, Suk-Bok;Kim, Ho-Yong
    • Communications for Statistical Applications and Methods
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    • 제25권5호
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    • pp.569-575
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    • 2018
  • Pareto distribution is important to analyze data in actuarial sciences, reliability, finance, and climatology. In general, unknown parameters of the Pareto distribution are estimated based on the maximum likelihood method that may yield inadequate inference results for small sample sizes and high percent censored data. In this paper, a new approach based on the regression framework is proposed to estimate unknown parameters of the Pareto distribution under the progressive Type-II censoring scheme. The proposed method provides a new regression type estimator that employs the spacings of exponential progressive Type-II censored samples. In addition, the provided estimator is a consistent estimator with superior performance compared to maximum likelihood estimators in terms of the mean squared error and bias. The validity of the proposed method is assessed through Monte Carlo simulations and real data analysis.

ON CHARACTERIZATIONS OF THE PARETO DISTRIBUTION BY THE INDEPENDENT PROPERTY OF UPPER RECORD VALUES

  • Lee, Min-Young;Lim, Eun-Hyuk
    • 충청수학회지
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    • 제24권1호
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    • pp.85-89
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    • 2011
  • We present characterizations of the Pareto distribution by the independent property of upper record values in such a way that F(x) has a Pareto distribution if and only if $\frac{X_{U(n)}}{X_{U(m)}}$ and $X_{U(m)}$ are independent for $1{\leq}m. Futhermore, the characterizations should find that F(x) has a Pareto distribution if and only if $\frac{X_{U(n)}}{X_{U(n)}{\pm}X_{U(m)}}$ and $X_{U(m)}$ are independent for $1{\leq}m.