• 제목/요약/키워드: Multiple Comparison Procedure

검색결과 100건 처리시간 0.021초

랜덤화 블록 모형에서 정렬 방법을 이용한 비모수 다중비교법 (Nonparametric Multiple Comparison Procedure Using Alignment Method Under Randomized Block Design)

  • 한지웅;김동재
    • 응용통계연구
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    • 제19권3호
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    • pp.555-564
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    • 2006
  • 랜덤화 블록 모형하에서의 비모수 다중비교방법으로는 Friedman 순위합 다중비교 방법(McDonald와 Thompson, 1967)이 있다. 이 방법은 블록내 순위를 이용하여 블록간 정보를 이용하지 못하였다. 이런 단점을 보완하기 위하여 본 논문에서는 Hodges와 Lehmann(1962)이 제안한 정렬방법을 이용한 새로운 비모수 다중비교방법을 제안한다. 또한 모의실험을 통하여 여러 다중비교방법의 검정력을 비교하였다.

다중비교 절차를 이용한 제조공정의 분석 (Analysis of the Manufacturing Process using Multiple Comparison Procedure)

  • 최봉욱;김광섭
    • 산업경영시스템학회지
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    • 제20권44호
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    • pp.333-341
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    • 1997
  • The purpose of this paper is to compare the manufacturing process with random covariate using multiple comparison procedure. The methodology that compares each manufacturing process by inspecting the number of nonconforming items out of k-treatment, has serveral limitations and problems according to the method and contect of the analysis. The proper way of analysis, therefore, could be obtained by the multiple comparison procedure of simultaneous confidence region of variance components. Effections that affect a manufactuing process may be predictive of responce to treatments are called covariates. In the study of comparing several treatments, prsense of covariate may bias the estimates of treatment effects.

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Bayesian Multiple Comparison of Binomial Populations based on Fractional Bayes Factor

  • Kim, Dal-Ho;Kang, Sang-Gil;Lee, Woo-Dong
    • Journal of the Korean Data and Information Science Society
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    • 제17권1호
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    • pp.233-244
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    • 2006
  • In this paper, we develop the Bayesian multiple comparisons procedure for the binomial distribution. We suggest the Bayesian procedure based on fractional Bayes factor when noninformative priors are applied for the parameters. An example is illustrated for the proposed method. For this example, the suggested method is straightforward for specifying distributionally and to implement computationally, with output readily adapted for required comparison. Also, some simulation was performed.

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A Bayesian Approach to Paired Comparison of Several Products of Poisson Rates

  • Kim Dae-Hwang;Kim Hea-Jung
    • 한국통계학회:학술대회논문집
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    • 한국통계학회 2004년도 학술발표논문집
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    • pp.229-236
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    • 2004
  • This article presents a multiple comparison ranking procedure for several products of the Poisson rates. A preference probability matrix that warrants the optimal comparison ranking is introduced. Using a Bayesian Monte Carlo method, we develop simulation-based procedure to estimate the matrix and obtain the optimal ranking via a row-sum scores method. Necessary theory and two illustrative examples are provided.

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Bayesian Multiple Comparison of Bivariate Exponential Populations based on Fractional Bayes Factor

  • Cho, Jang-Sik;Cho, Kil-Ho;Choi, Seung-Bae
    • Journal of the Korean Data and Information Science Society
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    • 제17권3호
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    • pp.843-850
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    • 2006
  • In this paper, we consider the Bayesian multiple comparisons problem for K bivariate exponential populations to make inferences on the relationships among the parameters based on observations. And we suggest the Bayesian procedure based on fractional Bayes factor when noninformative priors are applied for the parameters. Also, we give a numerical examples to illustrate our procedure.

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Bayesian Multiple Comparison of Normal Populations based on Bayes Factor

  • Kang, Sang-Gil;Lee, Chang-Soon
    • 한국산업정보학회논문지
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    • 제7권1호
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    • pp.42-49
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    • 2002
  • 이 논문에서는 정규분포를 하는 모집단에 대한 베이지안 다중비교를 개발한다. 베이지안 다중비교를 위해서는 베이즈요인의 계산이 필수적인데 베이즈 요인의 계산은 O'Hagan (1995)이 제안한 부분베이즈 요인을 이용한다. 그리고 베이지안에서 필수적인 모수에 대한 사전분포로는 무정보적 사전분포를 이용한다. 또한, 비교대상이 되는 모집단의 수가 3이상인 경우에 대하여 베이즈요인의 정확한 형태를 유도했으며 정규분포를 한다고 널리 알려져 있는 자료를 제안된 방법으로 분석하는 사례를 보였으며, 모의실험을 통하여 제안된 방법의 유용성을 보였다.

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Robustness for Pairwise Multiple Comparison Procedures with Trimmed Means under Violated Assumptions : Bonferroni, Shaffer, and Welsch Procedure

  • Kim, Hyun-Chul
    • Communications for Statistical Applications and Methods
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    • 제4권3호
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    • pp.775-785
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    • 1997
  • Robustness rates for repeated measures pairwise multiple comparison procedures were investigated in a split plot design with one between- and one within-subjects factor using untrimmed and trimmed data. Five factors were manipulated in the study: distribution, sphericity, variance-covariance heteroscedasticity, total sample size, and sample size ratio. The Welsch test (W) and the Welsch test on trimmed data $(W_{RT})$ performed better than the other procedures, but had a liberal tendency. The trimmed difference score Bonferroni Procedure $(B_{DT})$ was a good choice in some conditions.

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On Multiple Comparisons of Randomized Growth Curve Model

  • Shim, Kyu-Bark;Cho, Tae-Kyoung
    • 한국데이터정보과학회:학술대회논문집
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    • 한국데이터정보과학회 2001년도 추계학술대회
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    • pp.67-75
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    • 2001
  • A completely randomized growth curve model was defined by Zerbe(1979). We propose the fully significant difference procedure for multiple comparisons of completely randomized growth curve model. The standard F test is useful tool to multiple comparisons of the completely randomized growth curve model. The proposed method is applied to experimental data.

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일원배치모형에서 결합위치를 이용한 비모수 다중비교법 (Nonparametric multiple comparison method in one-way layout based on joint placement)

  • 석다희;김동재
    • 응용통계연구
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    • 제30권6호
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    • pp.1027-1036
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    • 2017
  • 일원배치모형에서 세 개 이상의 처리 간에 차이 유무를 검정하여 귀무가설이 기각됐다면, 어떤 것이 통계적으로 유의한 결과인지 확인하기 위해서는 다중비교 방법이 필요하다. 대표적인 모수적 검정법으로는 Tukey (1953), 비모수적 검정법으로는 Kruskal-Wallis (1952)의 검정에 기초한 방법이 있다. 이 방법은 전체 자료에 대한 혼합표본에 순위를 부여한 후 세 개 이상의 각 처리별 평균 순위를 이용한 검정방법이다. 본 논문에서는 Chung과 Kim (2007)이 제안한 결합위치 검정법을 확장하여 일원배치모형에서 새로운 비모수적 다중비교 방법을 제안하였다. 또한 모의실험(Monte Carlo simulation)을 통해 기존의 검정방법들과 제안한 방법의 family wise error rate (FWE)와 검정력을 비교하였다.

A Bayesian Multiple Testing of Detecting Differentially Expressed Genes in Two-sample Comparison Problem

  • Oh Hyun-Sook;Yang Wan-Youn
    • Communications for Statistical Applications and Methods
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    • 제13권1호
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    • pp.39-47
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    • 2006
  • The Bayesian approach to multiple testing procedure for one sample testing problem proposed by Scott and Berger (2003) is extended to two-sample comparison problem in microarray experiments. The prior distribution of each gene's mean for one sample is given conditionally on the corresponding gene's mean for the other sample. Posterior distributions of interesting parameters are derived and estimated based on an importance sampling method. A simulated example is given for illustration.