نتایج جستجو برای: process capability index bootstrap confidence interval maximum likelihood estimate type

تعداد نتایج: 3476976  

Journal: :Statistics in medicine 2017
Jenny Jeyarajah Gengsheng Qin

In this paper, we propose empirical likelihood methods based on influence function and jackknife techniques for constructing confidence intervals for mean medical cost with censored data. We conduct a simulation study to compare the coverage probabilities and interval lengths of our proposed confidence intervals with that of the existing normal approximation-based confidence intervals and boots...

Journal: :Systematic biology 2007
Vivek Jayaswal John Robinson Lars Jermiin

The models of nucleotide substitution used by most maximum likelihood-based methods assume that the evolutionary process is stationary, reversible, and homogeneous. We present an extension of the Barry and Hartigan model, which can be used to estimate parameters by maximum likelihood (ML) when the data contain invariant sites and there are violations of the assumptions of stationarity, reversib...

Journal: :Technometrics 2000
Shuen-Lin Jeng William Q. Meeker

This article compares different procedures to compute confidence intervals for parameters and quantiles of the Weibull, lognormal, and similar log-location-scale distributions from Type I censored data that typically arise from life-test experiments. The procedures can be classified into three groups. The first group contains procedures based on the commonly used normal approximation for the di...

2008
Melanie Birke Nicolai Bissantz Hajo Holzmann

We construct uniform confidence bands for the regression function in inverse, homoscedastic regression models with convolution-type operators. Here, the convolution is between two non-periodic functions on the whole real line rather than between two period functions on a compact interval, since the former situation arguably arises more often in applications. First, following Bickel and Rosenbla...

‎The goal of this study is to introduce an Asymmetric Uniform-Laplace (AUL) distribution‎. ‎We present a detailed theoretical description of this distribution‎. ‎We try to estimate the parameters of AUL distribution using the maximum likelihood method‎. ‎Since the likelihood approach results in complicated forms‎, ‎we suggest a bootstrap-based approach for es...

2007
N. A. Ibrahim A. Kudus

In many applications of failure time data analysis, it is important to perform inferences about the median of the distribution function in situations of failure time data modeling with skewed distribution. For failure time distributions where the median of the distribution function can be analytically calculated, its maximum likelihood estimator is easily obtained from the invariance properties...

Journal: :Mathematics 2023

In this paper, estimations of the parameter and acceleration factor Burr–Hatke exponential distribution in partially accelerated life tests under progressively type II censoring are investigated. By using typical maximum likelihood methods Bayesian method, point obtained. Based on asymptotic normality Delta approximate confidence intervals established Fisher information matrix. The percentile b...

Journal: :IJFSA 2017
Zainab Abbasi Ganji Bahram Sadeghpour Gildeh

Processcapabilityindicesareusedtoevaluatetheperformanceofthemanufacturingprocess.When thespecificationlimitsandthetargetvaluearenotprecise,theauthorscannotusethetraditional methodstoassessthecapabilityoftheprocess.Fortheprocesseswithasymmetrictoleranceintervals, somefuzzyprocesscapabilityindiceshavebeenintroducedsuchas  Cpk '' and  Cpmk...

2011
A. Ganguly S. Mitra D. Samanta D. Kundu

Epstein [9] introduced the Type-I hybrid censoring scheme as a mixture of Type-I and Type-II censoring schemes. Childs et al. [5] introduced the Type-II hybrid censoring scheme as an alternative to Type-I hybrid censoring scheme, and provided the exact distribution of the maximum likelihood estimator of the mean of a one parameter exponential distribution based on Type-II hybrid censored sample...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان فارس - دانشکده علوم پایه 1389

توزیع های نمایی، ریلی، نرخ شکست خطی، وایبل دو پارامتری، مقادیر غائی نوع اوّل و مدل انتگرال بتا رایج ترین توزیع هایی هستند که در تحلیل داده های بقا (طول عمر) به کار می روند. توزیع های ذکر شده دارای چندین ویژگی مطلوب و تحلیل پذیری فیزیکی خوبی هستند. در این پایان نامه یک توزیع وایبل تعدیل یافته معرفی می کنیم که این توزیع به چند توزیع ذکر شده قابل تعمیم است. برآورد درست نمایی ماکسیمم پارامترهای مجهو...

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